Innovation & exploration

Evolution of the Hard Disk !

2011-12-05T01:27:00.001-08:00

[video] - The Future of Energy Management

2011-11-21T05:01:00.000-08:00

Learn how to reduce energy costs by managing Power over Ethernet devices, and much more, with Cisco EnergyWise.

Please put your comments here.

[CODE] Java MCast Sender & Receiver

2011-10-24T23:55:00.000-07:00

Most people need to test multicast sender and receiver in
their developments. So I thought to present a Sample java
code for multicast sender and Receiver.

This MCast sender can send a File as the data of the payload.
Multicast receiver will capture those data and save those data to a
file.

MCast Sender source code:

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;
import java.net.SocketException;
import java.net.UnknownHostException;

public class MulticastSender {

  public static void main(String[] args) {

    InetAddress ia = null;
    int port = 0;
    String characters = "Here's some multicast data\n";
    byte[] data = null;
    
    try 
    {
  FileInputStream input = new FileInputStream(args[2]);
  System.out.println("Data File Size: " + input.available() + " Bytes");
  data = new byte[input.available()];
  input.read(data);
  System.out.println("Read buffer Size: " + data.length  + " Bytes");
 } catch (FileNotFoundException e1) {
  System.err.println(e1);
  e1.printStackTrace();
 } catch (IOException e) {
  System.err.println(e);
  e.printStackTrace();
 }
    
    
    
    // read the address from the command line
    try {
      try {
        ia = InetAddress.getByName(args[0]);
      } catch (UnknownHostException e) {
        //ia = InetAddressFactory.newInetAddress(args[0]);
      }
      port = Integer.parseInt(args[1]);
    } catch (Exception e) {
      System.err.println(e);
      System.err.println("Usage: java MulticastSender [MulticastAddress] [port]  [File]");
      System.exit(1);
    }

   
    DatagramPacket dp = new DatagramPacket(data, data.length, ia, port);

    try {
      MulticastSocket ms = new MulticastSocket();
      ms.joinGroup(ia);
      ms.send(dp);
      ms.leaveGroup(ia);
      ms.close();
      System.out.println("File send. Length:"+ dp.getLength()  + " Bytes"); 
    } catch (SocketException se) {
      System.err.println(se);
    } catch (IOException ie) {
      System.err.println(ie);
    }

  }

MCast Receiver Source Code:

import java.net.*;  /* import networking package */
import java.io.*;   /* import input/output package */

public class mcreceive {

  public static final int MAX_LEN  = 1024;  /* max receive buffer */
  public static final int MIN_PORT = 1024;  /* min network port */
  public static final int MAX_PORT = 65535; /* max network port */

  public static void main(String argv[]) {

    InetAddress mcAddress=null; /* multicast address */
    int mcPort=0;               /* multicast port */
    int ttl=1;                  /* time to live */
    boolean done=false;         /* variable for send loop */

     /* validate number of arguments */
    if (argv.length != 2) {
      System.out.println("Usage: mcreceive " +
                        "[Multicast IP] [Multicast Port] [Output File]");
      System.exit(1);
   }

    /* validate the multicast address argument */
    try {
      mcAddress = InetAddress.getByName(args[0]);
        System.out.println("MCast Group: " + group);
    } catch (UnknownHostException e) {
        e.printStackTrace();
      System.err.println(argv[0] + " is not a valid IP address"+ e);
      System.exit(1);
    }

    /* validate address argument is a multicast IP */
    if (! mcAddress.isMulticastAddress()) {
      System.err.println(mcAddress.getHostAddress() +
                         " is not a multicast IP address.");
      System.exit(1);
    }

    /* parse and validate port argument */
    try {
      mcPort = Integer.parseInt(args[1]);
    } catch (NumberFormatException nfe) {
      System.out.println("Invalid port number " + argv[1]);
      System.exit(1);
    }

    if ((mcPort < MIN_PORT) || (mcPort > MAX_PORT)) {
      System.out.println("Invalid port number " + mcPort);
      System.out.println("Port should be in range " + MIN_PORT
                         + " to " + MAX_PORT);
      System.exit(1);
    }

    try {

      /* instantiate a MulticastSocket */
      MulticastSocket sock = new MulticastSocket(mcPort);

      /* set the address reuse option */
      sock.setReuseAddress(true); // Java 1.4 and higher

      /* join the multicast group */
      sock.joinGroup(mcAddress);
     
      while (!done) {  /* loop forever */

        /* create a new DatagramPacket with an empty buffer */
        byte[] buf = new byte[MAX_LEN];
        DatagramPacket packet = new DatagramPacket(buf, buf.length);

        /* wait to receive packet into the DatagramPacket instance */
        sock.receive(packet);

        /* output the data from the packet received */
        System.out.println("Received " + packet.getLength() +
            " bytes from " + packet.getAddress() + ": "
            + new String(packet.getData(),0,packet.getLength()));
        FileOutputStream out = new FileOutputStream(args[2],true);
        byte[] bData = new byte[packet.getLength() + 10];

        for(int i=0;i < packet.getLength();i++)
             bData[i] = packet.getData()[i];
        
        out.write(bData);
        out.close();
      }
      
      sock.leaveGroup(mcAddress);
      sock.close();

    } catch (IOException e) {
      System.err.println(e.toString());
      System.exit(1);
    }
  }
}

[WEB] Shorten URL of your Blog or Web Site by Google Url Shortener

2011-10-05T22:38:00.000-07:00

Most of time we need to use an alias URL for out Blog. That is more use full to add to a different blog or while send to a friend. By our experience the google services are very reliable and more clear. An other feature is the tracking the visitors. I used Google Url Shortener to create an alias for my blog. Here it is.

http://janaka077.blogsport.com ---> http://goo.gl/Dmt5F

[ARTICLE] - Google Corporate Philosophy

2011-09-15T22:55:00.001-07:00

""The perfect search engine," says co-founder Larry Page, "would understand exactly what you mean and give back exactly what you want." When Google began, you would have been pleasantly surprised to enter a search query and immediately find the right answer. Google became successful precisely because we were better and faster at finding the right answer than other search engines at the time.

But technology has come a long way since then, and the face of the web has changed. Recognizing that search is a problem that will never be solved, we continue to push the limits of existing technology to provide a fast, accurate and easy-to-use service that anyone seeking information can access, whether they're at a desk in Boston or on a phone in Bangkok. We've also taken the lessons we've learned from search to tackle even more challenges."

Ten main points of Google's philosophy

Focus on the user and all else will follow.
It's best to do one thing really, really well.
Fast is better than slow.
Democracy on the web works.
You don't need to be at your desk to need an answer.
You can make money without doing evil.
There's always more information out there.
The need for information crosses all borders.
You can be serious without a suit.
Great just isn't good enough.

Visit to Read more : http://www.google.com/about/corporate/company/tenthings.html

[WEB] Download Youtube videos in selected file formats

2011-09-14T22:28:00.000-07:00

Most of Youtube download tools and sites are available in free. But It is very rear to find a tool for convert the video into other formats during the download. ClipConverter.cc site provide that facility.

First you need to enter youtube url in Media URL and select the appropriate file format. And you can adjust several parameters of video quality

Here you can set the output file name. If you didn’t set that it will use the original name of the video

Then it will download the video to web server. That will take some times. That time will depends on the size of video.

Finally you will get the link for converted video.

Java 7 introduced the support of String in switch-case statements [CODE]

2011-09-12T03:56:00.001-07:00

After 16 years of complaints, Java 7 has - at last! - introduced the support of String in switch-case statements.
This allows us to code things such as:

boolean primary;
switch(color) {
case "red":
 primary=true;
 break;
case "green":
 primary=true;
 break;
case "blue":
 primary=true; 
 break; 
default:
 primary=false;
}
if (primary) System.out.println("This is a primary color");

Here is the issue ticket of that enhancement.

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=1223179

This issue is logged in 02-OCT-1995. Hopefully now java developers able to use switch-case instead of if-else.

That will increase the readability and the performance of the Code.
Refer the below WIKI page to understand the performance enhancement of switch-case statements.
http://en.wikipedia.org/wiki/Short-circuit_evaluation

jQuery for Dummies [Ebook]

2011-09-05T23:27:00.000-07:00

jQuery is all around you. You see it on hugely popular sites such as Twitter
and Facebook. When you visit Yahoo! or Google, there it is. Someone’s
Aunt Mary has a snazzy Web site with jQuery effects for her pet photography
business. But there you are, using animated gifs. Your site looks dated, and
you aren’t keeping up with your competition. It’s time for you to add the
power of jQuery to your site.

How Browsers Work - Behind the Scenes of Modern Web Browsers

2011-08-21T20:17:00.000-07:00

"Web browsers are probably the most widely used software. In this primer, I will explain how they work behind the scenes. We will see what happens when you type google.com in the address bar until you see the Google page on the browser screen" - Introduction of this Article.
....
....
"There are five major browsers used today - Internet Explorer, Firefox, Safari, Chrome and Opera. I will give examples from the open source browsers - Firefox, Chrome and Safari (which is partly open source). According to the StatCounter browser statistics, currently (August 2011), the usage share of Firefox, Safari and Chrome together is nearly 60%. So nowadays open source browsers are a substantial part of the browser business. "

Figure : Browser main components.

Full Article : http://www.html5rocks.com/en/tutorials/internals/howbrowserswork/

CSS cheat Sheet [PDF]

2011-08-16T00:24:00.001-07:00

This is good for web developers for day today usage.

http://dl.dropbox.com/u/1509699/manuals/css.pdf

Size: 316 KB (322,842 bytes)

German geniuses hit 800Mbps with light bulb WLAN

2011-08-08T20:16:00.000-07:00

Last year, Chinese scientists showed off some new old-school tech, transmitting data with blue LEDs that flicker faster than the human eye can perceive. This throwback to the good ol' days of IR receivers was able to hit speeds of 2Mbps, but leave it to the fine folks at the Heinrich Hertz Institute to push the light bulb networking tech to the extremes. Earlier this year researchers hit 500Mbps with white LEDs; now, using a combination of white, green, blue, and red, the team ramped that up to 800Mbps, officially putting Ethernet on notice. The line-of-sight networking won't actually replace your standard Cat 5 line or WiFi router, but it could find a home in places like hospitals where radio-based wireless technology can cause problems for sensitive equipment. With any luck, we'll soon be bathing our homes in HD-streaming illumination.

Google Web Fonts Provides a Variety of Fonts for Your Site

2011-08-04T22:04:00.001-07:00

Finding fonts to use on your website can be a pain, but a lot of people don't realize that Google has an interface for finding and using fonts on any site. Google Web Fonts lets you see samples of over 200 fonts in either a single word, sentence, or paragraph format. The amount of sample text it shows varies based upon which of those formats you choose.

After you've found a font that you like just click the "Quick-use" link to see an estimation of how this could affect your page load time, and then also the code you need to add to your site to use the font. The nice thing is that Google will host all of the scripts and CSS so that you don't have to worry about forking over the extra bandwidth yourself.

The site also has a "Collection" system that will essentially let you bookmark a bunch of fonts to make reviewing them a little easier later on. The whole system is pretty awesome, and I applaud Google for putting all of this together for web developers to use.

http://www.google.com/webfonts#HomePlace:home

--
>> http://janaka077.blogspot.com

Sony Play Station Network is Hacked !!

2011-08-04T04:26:00.001-07:00

As per the PSMag.com Reports:

"The outage officially began on Wednesday with Sony itself noting, that evening, that, "We're aware certain functions of PlayStation Network are down." The note came straight from the mouth, er, keys of senior director of corporate communications and social media Patrick Seybold. And that was just the beginning. "

As per the eweek.com Reports:

"Sony's PlayStation Network has been down for nearly a week, and the company finally admitted that an unauthorized person had stolen personal information belonging to 77 million account holders.

An attacker gained "illegal" access to personal information stored on both the PlayStation Network and the Qriocity online music and video service, Sony announced on its blog on April 26. The information included names, addresses, log-in and password credentials, password security answers, email addresses, and birth dates. User purchase history and credit card information may also have been compromised."

http://www.pcmag.com/article2/0,2817,2384214,00.asp

http://www.betanews.com/article/With-PlayStation-Network-still-down-Sony-admits-it-was-hacked/1303586929

Use PAC file to configure your proxy settings

2011-08-03T23:56:00.000-07:00

Proxy-Auto-Config (PAC) file defines how to web browser choose the
appropriate proxy server for connect to web site. PAC file contains a
java script function “FindProxyForURL(url, host)” . This function
returns one or more access method specifications. This
function allows to define simple and complex rules to find the proxy
server for given URL. That rule can be defined by the
Protocol or Specific host or Specific Port. So user can
define different proxies to different URLs.

Examples:

Proxy1.pac:

function FindProxyForURL(url, host)
{
/* SPECIAL CASES FOR NON-BALANCED ROUTING */
// Direct connections to non-FQDN hosts
if (isPlainHostName(host) ||
(host == "127.0.0.1") ||
(host == "www.pcs-computing.com") ||
(host == "pcs-computing.com") ||
(shExpMatch(host, "*.pcs-intranet.com")) ||
(shExpMatch(host, "90.0.0.*")) ||
(shExpMatch(host, "10.*"))) {
return "DIRECT" /* Directly connect to site */
} else {
/* Go through Proxy Server */
return "PROXY pcsproxy.pcs-computing.com:8080" }
}

Proxy2.pac:

function FindProxyForURL(url, host) {
/* our local URLs from the domains below example.com don't need a proxy: */
if (shExpMatch(host, "*.example.com"))
{
return "DIRECT";
}
// URLs within this network are accessed through
// port 8080 on fastproxy.example.com:
if (isInNet(host, "10.0.0.0", "255.255.248.0"))
{
return "PROXY fastproxy.example.com:8080";
}
// All other requests go through port 8080 of proxy.example.com.
// should that fail to respond, go directly to the WWW:
return "PROXY proxy.example.com:8080; DIRECT";
}

Set PAC file path in Mozilla FireFox,

Information Source : http://en.wikipedia.org/wiki/Proxy_auto-config

Sample Scripts: https://calomel.org/proxy_auto_config.html

News about Google

2011-07-25T21:38:00.001-07:00

Type your article or blog in Sinhala [Google transliterate]

2011-07-20T04:05:00.001-07:00

Now Google provide facility to type Sinhala words in Web Interface.
This tool translate English words to Sinhala in real time.

http://www.google.com/transliterate/

Open source Spelling checking facility for Web based application [Web Service, JavaScript]

2011-07-19T04:54:00.001-07:00

After the Deadline use artificial intelligence and natural language processing technology to find your writing errors and offer smart suggestions.

Use After the Deadline

In your browser: After the Deadline is available as a Firefox add-on and a Google Chrome extension. Now you can use our technology on any site.
With your blog: For bloggers, After the Deadline is available as a WordPress plugin. You may also use our Intense Debate plugin to let your readers check their comments.
On your site: Add our grammar, style, and spelling checker to your forms with our plugins for jQuery and TinyMCE. Our server technology is open source too.
With OpenOffice.org Writer: Our grammar, style, and misused word checker is available as an OpenOffice.org extension.

Example:

Sample Web Service Response:

<results>
<error>
<string>to be</string>
<description>Passive voice</description>
<precontext>want</precontext>
<type>grammar</type>
<url>http://service.afterthedeadline.com/info.slp?text=to+be</url>
</error>
<error>
<string>wether</string>
<description>Did you mean...</description>
<precontext>determine</precontext>
<suggestions>
<option>whether</option>
<option>weather</option>
</suggestions>
<type>spelling</type>
<url>http://service.afterthedeadline.com/info.slp?text=wether</url>
</error>
</results>

--
>> http://janaka077.blogspot.com

Selenium is a suite of tools to automate web browsers

2011-07-18T21:21:00.000-07:00

Selenium is a suite of tools to automate web browsers across many platforms.

1. Begin: write and run tests in Firefox.

Selenium IDE is a Firefox add-on that records clicks, typing, and other actions to make a test, which you can play back in the browser.

2. Customize: your language, your browser.

Selenium Remote Control (RC) runs your tests in multiple browsers and platforms. Tweak your tests in your preferred language.

3. Deploy: scale out, speed up.

Selenium Grid extends Selenium RC to distribute your tests across multiple servers, saving you time by running tests in parallel.

How It Works.....

Free Image Hosting (Multiple Imges at One time)

2011-06-29T02:42:00.000-07:00

[Link] - http://postimage.org

FastStone Photo Resizer

2011-06-29T02:36:00.000-07:00

FastStone Photo Resizer is an image converter and renaming tool that intends to enable users to convert, rename, resize, crop, rotate, change color depth, add text and watermarks to images in a quick and easy batch mode. Drag and Drop mouse operation is well supported.
Features

Convert and Rename images in batch mode
Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000
Resize, crop, change color depth, apply color effects, add text, watermark and border effects
Rename images with sequential number
Search and replace texts in the file names
Preview conversion and renaming
Support folder/non-folder structure
Load and save settings

[Download]

Check errors in Your CSS scripts - CSS Lint (online)

2011-06-17T04:35:00.001-07:00

CSS Lint is a tool to help point out problems with your CSS code. It does basic syntax checking as well as applying a set of rules to the code that look for problematic patterns or signs of inefficiency. The rules are all pluggable, so you can easily write your own or omit ones you don't want.

--
>> http://janaka077.blogspot.com

Extract Compiler Information Of a Executable File. [PEID]

2011-05-24T20:59:00.001-07:00

PEiD is a tool that extract compiler information of a given executable file. This is a free tool.

Features of PEiD Tool,

1. It has a superb GUI and the interface is really intuitive and simple.
2. Detection rates are amongst the best given by any other identifier.
3. Special scanning modes for *advanced* detections of modified and unknown files.
4. Shell integration, Command line support, Always on top and Drag'n'Drop capabilities.
5. Multiple file and directory scanning with recursion.
6. Task viewer and controller.
7. Plugin Interface with plugins like Generic OEP Finder and Krypto ANALyzer.
8. Extra scanning techniques used for even better detections.
9. Heuristic Scanning options.
10. New PE details, Imports, Exports and TLS viewers
11. New built in quick disassembler.
12. New built in hex viewer.
13. External signature interface which can be updated by the user.

Download it from Here.

Home Page : http://www.peid.info/

--
>> http://janaka077.blogspot.com

Dropdo: Online File Viewer.

2011-05-22T20:51:00.001-07:00

It can be a pain sharing files with other people if you don't know whether they will have issues opening a document, or whether they even have the necessary programs installed. For example, lets say you had a Photoshop file that you wanted to show someone. Do you just send them the original file in hopes that they'll be able to open it, or do you take the time to save it into a more universally accepted image format?

Dropdo wants to solve this exact issue by working to become a universal online file viewer. To get a file on the site you can upload it or point it to a file that already exists on the web. Here's an overview and some examples of the different types of files that can be uploaded and viewed online:

Documents (Word, Excel, PDF, PowerPoint, OpenOffice, RTF, CSV, etc.) – DOC example, PDF example
Images (including formats like EPS, SVG, PSD, Illustrator, etc.) – JPG example
Few video formats – example
Few audio formats (including MP3) – MP3 example
Plaintext
Markdown – MD example

If you try to use a file format that Dropdo doesn't directly support it will still accept it, but it will only be able to provide a download link rather than using a web-based viewer. According to the FAQs you are restricted to files that are smaller than 25MB, but the good news is that files will stick around indefinitely (unless they violate the terms of service). The big drawback is that as of right now there's no way to have your file(s) removed without emailing the developer. Hopefully that feature will be coming

USBDeview - List all connected USB Devices.

2011-04-25T21:41:00.001-07:00

USBDeview - GUI

USBDeview - Speed Test

USBDeview is a small utility that lists all USB devices that currently connected to your computer, as well as all devices that you previously used. For each device, extended information is displayed: name/description, type, serial number (for mass storage), the date/time that device was added, Vendor ID, Product ID etc. USBDeview also allows you to uninstall USB devices that you previously used and disconnect those currently connected. You can also use the program on a remote computer, as long as you are logged into that computer as admin.

* 64-bit version is available for download

* This is a freeware.

[Download]

RegExr: Free Online RegEx Testing Tool

2011-04-17T22:40:00.001-07:00

RegExr is an online tool for editing and testing Regular Expressions (RegExp / RegEx). It provides a simple interface to enter RegEx expressions, and visualize matches in real-time editable source text. It also provides a handy RegExp snippet sidebar with descriptions and usage examples to make it easier to learn Regular Expressions through trial and error.

Free desktop version also available for Mac OSX and Windows built with AIR .

Regular Expression References:

http://www.night-ray.com/regex.pdf

http://www.inxconstruction.com/medias/1/regexp.pdf

http://www.beedub.com/book/3rd/regexp.pdf

Online Regular Expression Editor : http://gskinner.com/RegExr/

--
>> http://janaka077.blogspot.com

Google motion is released !

2011-04-01T00:04:00.001-07:00

Motion is the news technology of communication in Google. It is very different from other Google services.
Google motion try to achieve the very effective new way of HCI (Human Computer Interaction) .

How it works

Gmail Motion uses your computer's built-in webcam and Google's patented spatial tracking technology to detect your movements and translate them into meaningful characters and commands. Movements are designed to be simple and intuitive for people of all skill levels.

--
>> http://janaka077.blogspot.com

Mozilla XULRunner Tutorial

2011-03-17T06:07:00.000-07:00

Step 1 – Download XULRunner: The
Mozilla developer page lists 1.9.2.15
as the most recent release
The XULRunner download is a ZIP file, not a true install. As a
developer, I like the idea that XULRunner only needs to be unzipped
onto my machine. I am assuming that it doesn’t need to hook into my
Windows system and that’s a good thing.
Step 2 – Install XULRunner: I
unzipped the archive to a new “c:\program files\xulrunner” folder.
Pretty simple so far.
Time to start a simple, bare bones application shell. Call it
a XUL
“Hello World” if you want, but I need to make sure that XULRunner will
work at all. Googling turned up a nice tutorial here.
It is definately worth reading. Using the tutorial, I created a simple
bootstrap application. All of what you see below can be found in Ryan’s
tutorial and the Mozilla XULRunner
documentation pages.
Step 3 – Create application folder struture:
I create the root in a new “c:\program files\xulapp” folder. Here is
the subfolder structure:


/xulapp
 /chrome
   /content
     main.xul
   chrome.manifest
 /defaults
   /preferences
     prefs.js
 application.ini

Notice that there are 4 files in the folder structure:
application.ini, chrome.manifest, prefs.js & main.xul
Step 4 – Setup application.ini:
The application.ini
file acts as the XULRunner entry point for your application. It seems
to be used to configure
how your application intends to use the XULRunner platform as well as
configure some information that XULRunner uses to run your application.
Here is mine:


[App]
Vendor=Finkle
Name=Test App
Version=1.0
BuildID=20060101
Copyright=Copyright (c) 2006 Mark Finkle
ID=xulapp@starkravingfinkle.org

[Gecko]
MinVersion=1.8
MaxVersion=1.8

Step 5 – Setup Chrome Manifest:
The chrome manifest
file is used by XULRunner to define specific URI’s which in turn are
used to locate application resources. This will become clearer when we
see how the “chrome://” URI is used. Applications can be distributed
compressed in a JAR file or uncompressed as folders and files. I am
using the uncompressed method for now. Here is my manifest:
content myapp file:content/
Step 6 – Setup Preferences: The
prefs.js files is used to tell XULRunner the name of the XUL
file to use as the main window. Here is mine:

pref("toolkit.defaultChromeURI",
"chrome://myapp/content/main.xul");

XULRunner preferences include:

toolkit.defaultChromeURI

toolkit.defaultChromeFeatures

toolkit.singletonWindowType

Step 7 – Create some XUL:
Finally, we need to
create a simple XUL window. Nothing fancy here, just the minimum we
need to make a window. No menus or anything:


<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>

<window id="main" title="My App" width="300" height="300"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
 <caption label="Hello World"/>
</window>

Step 8 – Run the App: The moment
of truth. We need
to get XULRunner to launch the bare-bones application. From a command
prompt opened to the “c:\program files\myapp” folder, we should be able
to execute this:
xulrunner.exe application.ini
Of course, xulrunner.exe must be in the PATH. Because of where
I
unzipped XULRunner, I could also try this if xulrunner.exe is not in
the PATH:
..\xulrunner\xulrunner.exe application.ini
Success! Here is a screenshot of
the bare bones application running on Win2K:

My next step will be to add much more to the bare bones
application.

Here is my sample application, This is included XULRunner also.

[myapp]

People who new to Linux

2011-03-16T03:19:00.001-07:00

I found a good reference guide for linux Users.
That is contained basic linux commands for day today use.
I have a attach download link here.

Link for PDF

C++ Constructor and Destructor work in different ways

2011-03-15T02:01:00.001-07:00

Some times you may know this facts !!

OUTPUT::
Create A
Create B
Delete B
Delete A

#########################################################

OUTPUT::
Create A
Create B
Delete A

####################################################################

OUTPUT::
Create A
Create B
Delete B
Delete A

As the above sample codes, Always objects should be distroied as it's original class type not in parent class type.
Other wise destructor should be Virtual function.

OUTPUT::
Create A
Create B
Delete B
Delete A

Why same code work in different in Java and C

2011-03-09T02:21:00.001-08:00

I wrote following codes in java and C. But output of those programs are different.
Java application gave 21 and C application gave 22 (I use GCC compiler).

Still I am investigating the reason for this.

Here is the JAVA code.

class test
{

    public static void main(String args[])
    {
        int a =5;
        int b = (++a) + (++a) + (++a);
        System.out.println(b);
    }

}

Here is the C code.

#include <stdio.h>

int main( int argc, const char* argv[] )
{
int a =5;
int b = (++a) + (++a) + (++a);
printf("%d \n",b);
}

--
>> http://janaka077.blogspot.com

Firefox "about" Commands List

2011-01-17T21:40:00.001-08:00

We love Firefox, so when our resident geek compiled this interesting list of "about" commands,
we couldn't resist sharing it with you guys.

To use the about commands just type the it into the Firefox address bar.

about:

Just typing "about:" will show general and version information. It's kind of short for about firefox :)

about:mozilla

It's a firefox easter egg. Try it.

about:blank

Shows a blank page.

about:config

Shows Firefox configuration.

about:cache

Shows information about Firefox cache. You can even browse the files in the cache

about:credits

Shows the list of contributors who helped develop Firefox.

about:plugins

Displays a list of plugins installed on Firefox

about:buildconfig

Information about the particular build of Firefox. Of interest to only geeks :)

--
>> http://janaka077.blogspot.com

Xinorbis 5.2 -- Free Hard Drive Space Analyzer with Advanced Reporting

2011-01-11T20:22:00.001-08:00

Xinorbis is a simple but powerful hard disk analyser. Using a sophisticated mix of graphs, tables and tree displays, it gives the user a complete overview of the contents of a hard disk, folder, removable or network drive.

It makes it easy to see the contents, structure and file distribution and file composition of a whole hard disk, directory, or mapped network drive. Includes full report creation.

Xinorbis is available for download with an installer, the recommended option, or as a ZIP archive for expert users who want more control; installing Xinorbis on to a USB flash drive.

Several additions have been made to Xinorbis to make it operate more efficiently as a "portable application", for more information see the help pages.

Xinorbis supports seamless integration with SQlite3 or ODBC for its Folder History data archive. Compare the contents of a hard drive or folder at any time or date.

Features

analyse a single drive, folder or merge several together in one report

view file distribution by file type, location, attributes, size, user (owner) and date/time

the Folder History feature allows you to compare the contents of a folder or drive at various times and dates

in-bullt powerful search engine (+ save results to a file or clipboard)

find duplicate files (by name and size)

complex report generation (with many user customisations) with export to HTML, ASCII, CSV or XML

save reports and tables for later comparison or for inclusion in other documents

shell support, scan a directory through Windows Explorer

updated regularly

Download
--
>> http://janaka077.blogspot.com

XnView - a utility for viewing and converting graphic files.

2011-01-10T01:40:00.001-08:00

It has the features :

Import about 400 graphic file formats
Export about 50 graphic file formats
Multipage TIFF, Animated GIF, Animated ICO support
Image IPTC, EXIF metadata support
EXIF auto rotation support
IPTC editing
Resize, rotate, crop support
Lossless rotate & crop (jpeg) support
Adjust brightness, contrast...
Auto levels, contrast
Modify number of colors
Apply filters (blur, average, emboss, ...)
Apply effects (lens, wave, ...)
Fullscreen mode
Slide show with effects
Batch convert, batch rename
Create WEB page and PDF Files from Images easily
Screen capture
Create contact Sheet
Create or edit Multi-page file (TIFF, DCX, LDF)
TWAIN & WIA support (Windows only)
Print support (Windows only)
Drag & Drop support (Windows only)
Compare image side by side
Filmstrip layout
44 languages support (Windows only)
And many many other things...
No Adware, No Spyware

XnView is provided as FREEWARE for private non-commercial or educational use (including non-profit organization)

Browser Window (windows version)

Viewer Window (windows version)

Download (Portable and Install Versions)
--
>> http://janaka077.blogspot.com

iSafePDF - The open source PDF protection software

2011-01-09T23:36:00.001-08:00

iSafePDF is a free open source PDF protection software.

it allows you to encrypt PDF document, signe them using a certificate and timestamp the signature.

all those features are PDF standards so your document will be readable/editable with all standard PDF programs.

The document tab

In this tab, you have to choose at least:

The source file: this is the document you want to sign, the document itself will not be modified.
The target file: this document will be a copy of the source document to which the signature and encryption will be applied.

If you want, you can modify the document meta-data.

The signature tab

This tab allows you to control the digital signature. If you have locally installed certificates you will see them in the Certificates list. You also have the choice to sign your document using a pfx file if certificates are exported to pfx format (see my first article for more information).

PDF Signature standard allows you to add three fields to the digital signature: the reason, the contact, and the location they are visible when you visualize the digital signature information.

If you want, you can make the signature visible in the document; in this case, it will be put on the first page in the lower left corner (in the next release, I'll add more options to configure visible signatures: position, custom image ...etc).

The PDF standard allows you to use a time stamp authority (TSA); using this feature will make your document signature valid even if the digital signature certificate expires, as the TSA will prove that the certificate was valid when the document was signed.

Download iSafePDF

WebP: Google's new attempt at speeding up the web

2010-11-01T02:18:00.001-07:00

As part of Google's initiative to make the web faster, over the past few months we have released a number of tools to help site owners speed up their websites. We launched the Page Speed Firefox extension to evaluate the performance of web pages and to get suggestions on how to improve them, we introduced the Speed Tracer Chrome extension to help identify and fix performance problems in web applications, and we released a set of closure tools to help build rich web applications with fully optimized JavaScript code. While these tools have been incredibly successful in helping developers optimize their sites, as we've evaluated our progress, we continue to notice a single component of web pages is consistently responsible for the majority of the latency on pages across the web: images.

Most of the common image formats on the web today were established over a decade ago and are based on technology from around that time. Some engineers at Google decided to figure out if there was a way to further compress lossy images like JPEG to make them load faster, while still preserving quality and resolution. As part of this effort, we are releasing a developer preview of a new image format, WebP, that promises to significantly reduce the byte size of photos on the web, allowing web sites to load faster than before.

Images and photos make up about 65% of the bytes transmitted per web page today. They can significantly slow down a user's web experience, especially on bandwidth-constrained networks such as a mobile network. Images on the web consist primarily of lossy formats such as JPEG, and to a lesser extent lossless formats such as PNG and GIF. Our team focused on improving compression of the lossy images, which constitute the larger percentage of images on the web today.

To improve on the compression that JPEG provides, we used an image compressor based on the VP8 codec that Google open-sourced in May 2010. We applied the techniques from VP8 video intra frame coding to push the envelope in still image coding. We also adapted a very lightweight container based on RIFF. While this container format contributes a minimal overhead of only 20 bytes per image, it is extensible to allow authors to save meta-data they would like to store.

While the benefits of a VP8 based image format were clear in theory, we needed to test them in the real world. In order to gauge the effectiveness of our efforts, we randomly picked about 1,000,000 images from the web (mostly JPEGs and some PNGs and GIFs) and re-encoded them to WebP without perceptibly compromising visual quality. This resulted in an average 39% reduction in file size. We expect that developers will achieve in practice even better file size reduction with WebP when starting from an uncompressed image.

To help you assess WebP's performance with other formats, we have shared a selection of open-source and classic images along with file sizes so you can visually compare them on this site. We are also releasing a conversion tool that you can use to convert images to the WebP format. We're looking forward to working with the browser and web developer community on the WebP spec and on adding native support for WebP. While WebP images can't be viewed until browsers support the format, we are developing a patch for WebKit to provide native support for WebP in an upcoming release of Google Chrome. We plan to add support for a transparency layer, also known as alpha channel in a future update.

JPEG	WEBP

136780 bytes	122260 bytes (10.6%)
Image URL: http://en.wikipedia.org/wiki/File:%22Forever_Tall%22_CITYarts,_Inc._mural.jpg Image Title: "Forever Tall CITYarts, Inc. mural at Cooper Square in the East Village of Manhattan, 2001 Image Author: Muralizer

--
>> http://janaka077.blogspot.com

FTP Rush: A Free Windows FTP Client

2010-10-26T21:30:00.001-07:00

Windows only
When it comes down to free FTP clients for Windows there are only a handful of them I ever hear people talk about. Normally they consist of apps like FileZilla or WinSCP, and some people just stick to the standard Windows Explorer if they are only connecting to FTP sites. I came across a different app the other day that I'd definitely put on par with apps like FileZilla. That app is FTP Rush.

This free app comes from a company that also makes a paid and more feature-packed FTP client, but their free alternative should be more than suitable for most of your needs. Here's a list of some key features for the app:

Supports FXP – Site-to-Site transfers
Tabbed interface and multiple connections
Supports FTP, FTPS, TFTP and SFTP (FTP over SSH).
GUI Customization and Integrated Docking
Drag-And-Drop files via Explorer-like interface
Automated transfer by writing FTP scripts
Built-in Task Manager including Synchronize
Supports HTTP Proxy, Socks 4&5
Fast SFV checking on client side
Supports Unicode/UTF8 charset
Supports UPnP Port-mapping
On-The-Fly Mode Z Compression
High performance Disk Buffer
Caching folders speeds your browsing
Keep alive your FTP connections
Smart Skip & Allow transfer
Row color and highlights
Super fast file search

What actually surprised me a bit was that they actually include a portable version of the app weighing in under 10MB once extracted on your machine. I haven't seen a lot of cases where the developer of the FTP program also supplies a portable version, which made this a nice touch. I think the interface could use a little work, but I find that's the case with most of the FTP clients.

FTP Rush Homepage (Windows only; Freeware)

--
>> http://janaka077.blogspot.com

Sony Rollable Colour OLED Display Announced

2010-10-26T20:17:00.000-07:00

Well, the 4.1 inch wide, 432×240 OLED panels, what with them being so thin and all, could be used in all manner of places. Although the cost of such technology is currently astronomic, in the future it will inevitably become cheap as chips, and when the time comes you may find these things springing up even in things such as labelling and packaging. But that’s just my predictions anyway, I’m sure the technical guys behind these developments plan for bigger and better things than just that, but right now I doubt they’re willing to disclose such intentions.

At the moment, the most they are willing to show is the extraordinary ability of the devices to display moving images whilst wrapped cylindrically around a tube of 4mm radius. At this point, you may be thinking that they’ll just break, or at least lose picture clarity. However, the plans show that even up to 1000 cycles of rolling and unrolling the screen, there is no clear degradation in the display’s quality – clearly the Sony design people will be very eager to create some really innovative product designs with this technology as soon as they are able.

So what do you think of these Sony Rollable OLED Display developments? There has been a lot of talk of this kind of OLED technology implementation recently, but up until now there has been no real concrete proof of the possibility. But here it is, so let us know what you make of it and perhaps what you would do with a ‘rollable’ OLED display?

SRC: http://www.zath.co.uk/sony-rollable-colour-oled-display-announced/

Digital & Analog devices display resolution in bref

2010-10-18T02:22:00.001-07:00

The display resolution of a digital television or display device is the number of distinct pixels in each dimension that can be displayed. It can be an ambiguous term especially as the displayed resolution is controlled by all different factors in cathode ray tube (CRT) and flat panel or projection displays using fixed picture-element (pixel) arrays.

This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio

These are the results of Steam hardware survey of March 2010.

Code	Name	Aspect ratio	Width	Height	% of Steam users
VGA	Video Graphics Array	4:3	640	480	n/a
SVGA	Super Video Graphics Array	4:3	800	600	n/a
XGA	eXtended Graphics Array	4:3	1024	768	12.36%
XGA+	eXtended Graphics Array Plus	4:3	1152	864	2.22%
WXGA	Widescreen eXtended Graphics Array	5:3	1280	768	0.72%
WXGA	Widescreen eXtended Graphics Array	8:5 (16:10)	1280	800	6.44%
SXGA	Super eXtended Graphics Array	4:3	1280	960	1.54%
SXGA	Super eXtended Graphics Array	5:4	1280	1024	19.10%
HD	High Definition (Basic)	16:9	1366	768	4.50%
WSXGA	Widescreen Super eXtended Graphics Array	8:5 (16:10)	1440	900	10.53%
HD+	High Definition (Plus)	16:9	1600	900
UXGA	Ultra eXtended Graphics Array	4:3	1600	1200	1.01%
WSXGA+	Widescreen Super eXtended Graphics Array Plus	8:5 (16:10)	1680	1050	18.23%
HD-1080	Full High Definition	16:9	1920	1080	9.68%
WUXGA	Widescreen Ultra eXtended Graphics Array	8:5 (16:10)	1920	1200	5.93%
	Other				3.42%

Here is the television standards in countries.

Television Standards by Country

Country	Signal Type
Afghanistan	PAL B, SECAM B
Albania	PAL B/G
Algeria	PAL B/G
Angola	PAL I
Antarctica	NTSC M
Antigua & Barbuda	NTSC M
Argentina	PAL N
Armenia	SECAM D/K
Aruba	NTSC M
Australia	PAL B/G
Austria	PAL B/G
Azerbaijan	SECAM D/K
Azores	PAL B
Bahamas	NTSC M
Bahrain	PAL B/G
Bangladesh	PAL B
Barbados	NTSC M
Belarus	SECAM D/K
Belgium	PAL B/H
Belgium (Armed Forces Network)	NTSC M
Belize	NTSC M
Benin	SECAM K
Bermuda	NTSC M
Bolivia	NTSC M
Bosnia/Herzegovina	PAL B/H
Botswana	SECAM K, PAL I
Brazil	PAL M
British Indian Ocean Territory	NTSC M
Brunei Darussalam	PAL B
Bulgaria	PAL
Burkina Faso	SECAM K
Burundi	SECAM K
Cambodia	PAL B/G, NTSC M
Cameroon	PAL B/G
Canada	NTSC M
Canary Islands	PAL B/G
Central African Republic	SECAM K
Chad	SECAM D
Chile	NTSC M
China (People'S Republic)	PAL D
Colombia	NTSC M
Congo (People'S Republic)	SECAM K
Congo, Dem. Rep. (Zaire)	SECAM K
Cook Islands	PAL B
Costa Rica	NTSC M
Cote D'Ivoire (Ivory Coast)	SECAM K/D
Croatia	PAL B/H
Cuba	NTSC M
Cyprus	PAL B/G
Czech Republic	PAL B/G (cable), PAL D/K (broadcast)
Denmark	PAL B/G
Diego Garcia	NTSC M
Djibouti	SECAM K
Dominica	NTSC M
Dominican Republic	NTSC M
East Timor	PAL B
Easter Island	PAL B
Ecuador	NTSC M
Egypt	PAL B/G, SECAM B/G
El Salvador	NTSC M
Equitorial Guinea	SECAM B
Estonia	PAL B/G
Ethiopia	PAL B
Falkland Islands (Las Malvinas)	PAL I
Fiji	NTSC M
Finland	PAL B/G
France	SECAM L
France (French Forces Tv)	SECAM G
Gabon	SECAM K
Galapagos Islands	NTSC M
Gambia	PAL B
Georgia	SECAM D/K
Germany	PAL B/G
Germany (Armed Forces Tv Germany)	NTSC M
Ghana	PAL B/G
Gibraltar	PAL B/G
Greece	PAL B/G
Greenland	PAL B
Grenada	NTSC M
Guam	NTSC M
Guadeloupe	SECAM K
Guatemala	NTSC M
Guiana (French)	SECAM K
Guinea	PAL K
Guyana	NTSC M
Haiti	SECAM
Honduras	NTSC M
Hong Kong	PAL I
Hungary	PAL K/K
Iceland	PAL B/G
India	PAL B
Indonesia	PAL B
Iran	PAL B/G
Iraq	PAL
Ireland, Republic Of	PAL I
Isle Of Man	PAL
Israel	PAL B/G
Italy	PAL B/G
Jamaica	NTSC M
Japan	NTSC M
Johnstone Island	NTSC M
Jordan	PAL B/G
Kazakhstan	SECAM D/K
Kenya	PAL B/G
Korea (North)	SECAM D, PAL D/K
Korea (South)	NTSC M
Kuwait	PAL B/G
Kyrgyz Republic	SECAM D/K
Laos	PAL B
Latvia	PAL B/G
Lebanon	PAL B/G
Lesotho	PAL K
Liberia	PAL B/H
Libya	PAL B/G
Liechtenstein	PAL B/G
Lithuania	PAL B/G, SECAM D/K
Luxembourg	PAL B/G, SECAM L
Macau	PAL I
Macedonia	PAL B/H
Madagascar	SECAM K
Madeira	PAL B
Malaysia	PAL B
Maldives	PAL B
Mali	SECAM K
Malta	PAL B
Marshall Islands	NTSC M
Martinique	SECAM K
Mauritania	SECAM B
Mauritius	SECAM B
Mayotte	SECAM K
Mexico	NTSC M
Micronesia	NTSC M
Midway Island	NTSC M
Moldova (Moldavia)	SECAM D/K
Monaco	SECAM L, PAL G
Mongolia	SECAM D
Montenegro	PAL B/G
Montserrat	NTSC M
Morocco	SECAM B
Mozambique	PAL B
Myanmar (Burma)	NTSC M
Namibia	PAL I
Nepal	B
Netherlands	PAL B/G
Netherlands (Armed Forces Network)	NTSC M
Netherlands Antilles	NTSC M
New Caledonia	SECAM K
New Zealand	PAL B/G
Nicaragua	NTSC M
Niger	SECAM K
Nigeria	PAL B/G
Norfolk Island	PAL B
North Mariana Islands	NTSC M
Norway	PAL B/G
Oman	PAL B/G
Pakistan	PAL B
Palau	NTSC M
Panama	NTSC M
Papua New Guinea	PAL B/G
Paraguay	PAL N
Peru	NTSC M
Philippines	NTSC M
Poland	PAL D/K
Polynesia (French)	SECAM K
Portugal	PAL B/G
Puerto Rico	NTSC M
Qatar	PAL B
Reunion	SECAM K
Romania	PAL D/G
Russia	SECAM D/K
St. Kitts & Nevis	NTSC M
St. Lucia	NTSC M
St. Pierre Et Miquelon	SECAM K
St. Vincent	NTSC M
Sao Tomé E Principe	PAL B/G
Samoa, American	NTSC
Saudi Arabia	SECAM B/G, PAL B
Samoa	NTSC M
Senegal	SECAM K
Serbia	PAL B/G
Seychelles	PAL B/G
Sierra Leone	PAL B/G
Singapore	PAL B/G
Slovakia	PAL B/G
Slovenia	PAL B/H
Somalia	PAL B/G
South Africa	PAL I
Spain	PAL B/G
Sri Lanka	PAL
Sudan	PAL B
Suriname	NTSC M
Swaziland	PAL B/G
Sweden	PAL B/G
Switzerland	PAL B/G (GERMAN ZONE, SECAM L (FRENCH ZONE
Syria	SECAM B, PAL G
Tahiti	SECAM
Taiwan	NTSC
Tajikistan	SECAM D/K
Tanzania	PAL B
Thailand	PAL B/M
Togo	SECAM K
Trinidad & Tobago	NTSC M
Tunisia	SECAM B/G
Turkey	PAL B
Turkmenistan	SECAM D/K
Turks & Caicos Islands	NTSC M
Uganda	PAL B/G
Ukraine	SECAM D/K
Uruguay	PAL N
United Arab Emirates	PAL B/G
United States	NTSC M
United Kingdom	PAL I
Uzbekistan	SECAM D/K
Venezuela	NTSC M
Vietnam	NTSC M, SECAM D
Virgin Islands (Us & British)	NTSC M
Wallis & Futuna	SECAM K
Yemen	PAL B/NTSC M
Zambia	PAL B/G
Zimbabwe	PAL B/G

Source: http://en.wikipedia.org/wiki/Display_resolution

EtherCodes let you share and collaborate codes with other peers in real-time

2010-10-13T01:56:00.001-07:00

EtherCodes let you share and collaborate codes with other peers in real-time, with simply a web browser.

How often had I being annoyed by the inconvenience of the simply wish of sharing codes and collecting improvements from my colleagues, through emails, via instant messages, on web paste bin, over a VNC, etc... all that didn't satisfy me from either a verbose setup process or the chaos when having to figure out piece of codes from messy, EtherCodes enlighten me of the way how this should just work, and even refreshes my style of working to a way that's more open, and efficient, happy coding!

Try http://ethercodes.com/

--
>> http://janaka077.blogspot.com

Easy Desktop Organizer

2010-07-19T04:06:00.000-07:00

Fences™ is a program that helps you organize your desktop, and can hide your icons when they're not in use. A "Fence", a term coined by this program, is an icon group on your desktop. Fences is an add-on to your desktop, not a replacement.

Rope off your desktop
Fences allows you to create shaded areas on your desktop that you can place icons in. You can label them however you wish, and move/resize them anywhere on the desktop. Pre-included layouts help speed the process for new users.

See your wallpaper again! Quickly hide & show all your icons with an easy double-click
Double click blank space on your desktop, and all your icons will fade out. Double click again, and they’ll return. We think this feature is so useful and unique, that we’ve applied for a patent on it. You can even pick icons and individual Fences to exclude!

Create snapshots, and have automatic scaling (for screen size changes)
Take and restore snapshots of your Fence layouts for backup, or for when you are doing different tasks. Change your resolultion for playing games and Fences will keep them in the same relative spots. In the Pro version of Fences, the "snapshot" feature has been enhanced to automatically take and keep recent snapshots on hand, ensuring your desktop layout never gets lost.

Download

Grep GUI for Windows

2010-06-17T23:12:00.001-07:00

AstroGrep is a Microsoft Windows grep utility. Grep is a UNIX command-line program which searches within files for keywords. AstroGrep supports regular expressions, versatile printing options, stores most recently used paths and has a "context" feature which is very nice for looking at source code.

- Regular expressions
- Concurrent multiple file types
- Recursive directory searching
- A "context" feature that selects the lines above and below your search expression
- Most Recently Used list for search paths
- Somewhat versatile printing options
- Double click to open file with editor of your choice
- Store Most Recently Used file names and search expressions
- Match Whole Word Only
- Syntax highlighing
- Free of charge and Open Source

[ Home ]

[ Download ]

Free Flash charts and graphs for web development

2010-05-19T03:36:00.001-07:00

[http://www.amcharts.com/]

AmCharts is a set of Flash charts for your websites and Web-based products. AmCharts can extract data from simple CSV or XML files, or they can read dynamic data generated with PHP, .NET, Java, Ruby on Rails, Perl, ColdFusion, and many other programming languages.

Try this in your project !!

Batch Compress/Resize Images with RIOT

2010-05-14T00:29:00.001-07:00

Windows only
The free and portable Radical Image Optimization Tool (RIOT) has been an app I've recommended for a few years now (I think I've been using it since about 2008). As the name suggests it focuses on doing one thing, and doing it well: optimizing images. It can compress, resize, adjust, and convert your images in a way that leaves you in control of the end result.

The thing I like the most about riot is how easily I can manipulate multiple photos in just a few clicks. Thanks to the "batch" button on the toolbar I can select an entire folder of images that I want to resize and/or compress, and the speed at which it can process the images is rather incredible. This is great for emailing off a slew of photos when you're concerned about the attachment size.

Most of the time I use RIOT for batch optimizations, but this regularly-updated app is equipped with all kinds of other features:

Open many image types including rare/scientific types
Save and optimize JPEG, GIF and PNG with a simple, clean user interface
Works in dual view: (original – optimized image) or single view (optimized image).
Automatic preview of resulting image
In-place compare function (alternativelly display the original image over the optimized image to notice small pixel changes)
Compress files to desired filesize threshold
Fast processing (all is done in memory);
See instant results including resulting filesize
Batch support (process multiple files at once)
Transparency handling options
Decide if you want to keep metadata (comments, IPTC, Adobe XMP, EXIF profiles, ICC profiles).
Transfer metadata between image formats (destination format must support them)
Common tools: pan and zoom, rotate, flip
Basic image adjustments: brightness, contrast, gamma, invert
Visually reduce number of unique colors for PNG and GIF images in order to reduce filesize
Resize image by using well known resample filters (ex: Lanczos3, Catmull Rom, Bicubic, and others)
Compression and the results are comparable to those of commercial products, even higher.
Adaptive logarithmic tone mapping algorithm (Drago) used for HDR images

Seeing that RIOT is free and portable you can give it a try without much worry. I highly recommend keeping this one in your toolbox.

Convert your videos quickly, easily, and all at once with WinFF & FFmpeg.

2010-04-16T18:20:00.000-07:00

WinFF is a GUI for the command line video converter, FFMPEG. It will convert most any video file that FFmpeg will convert. WinFF does multiple files in multiple formats at one time. You can for example convert mpeg's, flv's, and mov's, all into avi's all at once. WinFF is available for Windows 95, 98 , ME, NT, XP, VISTA, and Debian, Ubuntu, Redhat based GNU/Linux distributions. WinFF is available in Brazilian Portuguese, Bulgarian, Chinese Traditional, Danish, Dutch, English, French, German, Greek, Hebrew, Italian, Norwegian, Polish, Portuguese, Russian, Serbian, Slovenian, Spanish and Turkish.

[Download for windows] [Portable version]

Free Windows System Explorer

2010-02-24T03:33:00.001-08:00

Keeping tabs on my machine is something I’ve done for as long as I can remember. I like watching the performance of my applications, monitoring network connections, and all of that stuff most people would never think twice about. One of the most popular utilities for doing this is the Process Explorer that is put out by Microsoft, but there’s another free app that I really love called System Explorer.

What makes this program so great? In some ways I view it as an all-in-one suite for monitoring and managing the apps on your PC. You can view all of the common stats like memory/CPU usage, but you can also do things like view network connection, manage startup items, and add/remove apps. My favorite thing, however, is the ability to right-click on any process and upload that file to virustotal.com for analysis. Once it’s uploaded you’ll instantly see the results in your browser.

After you start using System Explorer for a little bit you’ll start to notice some of the niceties and attention to detail. One example is in the screenshot above… look at the CPU usage of the “firefox.exe” process. At the time I took the screenshot the CPU was at 0%, but the green bars behind it represent a mini graph of CPU usage for that particular app. If you scroll through the list of processes you can quickly see CPU-heavy processes simply by looking for those bright green lines.

Here’s a rundown on some of the things System Explorer is capable of:

Detailed informations about Tasks, Processes, Modules, Startups, IE Addons, Uninstallers, Windows, Services, Drivers, Connections and Opened Files.
Easy check of suspicious files via VirusTotal or Jotti service.
Easy search details about file/process via online databases.
Launcher (“New Task…” dialog) with integrated AutoSearch and AutoCompletion.
Action History for monitoring processes activities.
Performance graphs for monitoring usage of system resources in time.
System Snapshots for easy finding of system changes.
System Report builds rich text report containing major informations about your System.
Multilanguage and Plugins Support.
Version 2.0 brings brand new user interface and Windows 7 support.
Security feature with online File Reviews.

And here are a bunch of screenshots:

(Click thumbnail to enlarge)

If you like to keep an eye on your system I highly recommend taking a look at this free app. It’s available for both 32-bit and 64-bit versions of Windows, and is even bundled in a portable format for those who don’t want to install it.

System Explorer Homepage (Windows only; Freeware)

SPlayer: A Light and Fast Media Player

2010-02-18T21:50:00.001-08:00

Windows only
These days computers are becoming more and more of a media hub for users to watch movies or television shows on. For awhile I've switched between a handful of media players including VLC, KMPlayer, and GOM. All of those are excellent in their own way, and now I think I'll also have to add SPlayer to the list. On top of supporting the wide array of media types that the others do, SPlayer is fast.

The best thing about SPlayer is hands-down the simple interface. As you can see in the screenshot above it's nice because all of the buttons are overlaid on the video when you move your mouse, and there are no visible menus to distract you. Not only that, but there is a minimalist mode (pictured above) that gets rid of the minimize/maximize/close buttons that are typically at the top of a window so that you get a very clean viewing experiencing without needing to go to full-screen mode.

As expected SPlayer also integrates with Windows 7 nicely. One way it does that is to show the progress of whatever you're watching in the Taskbar icon, and I'm hoping that in an upcoming release it will also some basic jumplist support (for things like recently played movies). Thanks to some out-of-the-box jumplist functionality in Windows 7, however, you can always drag a file onto the SPlayer icon to have that particular file pinned to the jumplist menu. Whenever you select that video from the list SPlayer will immediately open and start playing it.

And I can't forget to mention the performance, which is rather incredible. Starting up SPlayer takes about a second on my machine, and to start playing a video all I have to do is drag the file somewhere in the window. In terms of memory usage SPlayer uses about 5MB when sitting idle and around 36MB when a movie is playing. That definitely falls within the range of acceptability.

Everything about this app feels snappy, clean, and well thought out. I give the developers a lot of credit for the attention to detail that ensures users will have the best experience possible. I highly recommend checking it out if you haven't already.

--
>> http://janaka077.blogspot.com

Check the quality of a Film (with multiple parts)

2010-02-18T04:20:00.001-08:00

When i am downloading a film with multiple parts. I need to check the quality of that film with out downloading all parts. here is a simple method for that.
I thing this will very helpful for you all.

Free Network Bandwidth Monitor

2010-01-07T02:10:00.000-08:00

NetWorx is a simple and free, yet powerful tool that helps you objectively evaluate your bandwidth situation. You can use it to collect bandwidth usage data and measure the speed of your Internet or any other network connection. NetWorx can help you identify possible sources of network problems, ensure that you do not exceed the bandwidth limits specified by your ISP, or track down suspicious network activity characteristic of Trojan horses and hacker attacks.

The program allows you to monitor all your network connections or a specific network connection (such as Ethernet or PPP) only. The software also features a system of highly customizable visual and sound alerts. You can set it up to alert you when the network connection is down or when some suspicious activity, such as unusually heavy data flow, occurs. It can also automatically disconnect all dialup connections and shut down the system.

The incoming and outgoing traffic is represented on a line chart and logged to a file, so that you can always view statistics about your daily, weekly and monthly bandwidth usage and dialup duration. The reports can be exported to a variety of formats, such as HTML, MS Word and Excel, for further analysis.

Key Features

Clear graphic and/or numeric display.
Usage reports with export to a variety of file formats, including Excel, MS Word and HTML.
Permits close supervision of uploads and downloads.
Works with dial-up, ISDN, cable modems, ADSL, Ethernet cards, and more.
Includes network information & testing tools with advanced netstat that displays applications using your Internet connection.
Scalable to your own modem download capabilities.
Option to notify user or disconnect from the Internet automatically when network activity exceeds a certain level.
Speed meter to accurately time downloads and report the average transfer rates.
Dial-up session journal with detailed information about every session.
Absolutely free and does not contain any adware/spyware/malware.

With NetWorx You Can ...

Find out and monitor how fast your Internet connection is.
Find out and monitor how much Internet traffic you consume.
Verify whether your ISP charges your Internet usage fairly.
Detect a suspicious network activity on your computer.
Perform simple network tests such as ping and trace route.
Be notified about excessive Internet usage.

Screenshots

Right-click the NetWorx system tray icon (as shown on the picture) to bring up the program's menu. This menu lets you control the utility. Left-clicking the system tray icon displays the current NetWorx state. NetWorx can also display the real time traffic data.

As well as accumulated daily, weekly and monthly totals, and lets you export that information to a number of formats. Click a picture to enlarge!

NetWorx is highly customizable and includes network tools such as ping, trace route and netstat.

http://www.softperfect.com/download/freeware/networx_portable.zip

How to Acquire image by scanner in java

2009-10-28T04:37:00.000-07:00

You may required to use a image scanner with your java application. But JDK is not support for that kind of functionality. So Third party library is needed.
TWAIN is a very famous library. But it is a written in C.
Don't warry I found a java wrapper for TWAIN dll.

Source code : http://www.mms-computing.co.uk/uk/co/mmscomputing/device/twain/index.php

Library:http://www.mms-computing.co.uk/uk/co/mmscomputing/device/twain/uk.co.mmscomputing.device.twain.jar

Sample Code: http://www.mms-computing.co.uk/uk/co/mmscomputing/device/twain/TwainExample.java

Ok. Now you continue with your development.

Bye!

Remote Compiling and Debuging IDE - C++

2009-10-22T05:13:00.000-07:00

Most of the times we need to compile our C++ Applications in a UNIX or Solaris Environments. If our Desktop Pc is operated on Windows Platform then we need to use a terminal application (Like PuTTy) and do the rest in command line. Working with Command line is not so convenient. I found a god solution, That is BVRDE.
BVRDE is an Integrated Development Environment (IDE) for C and C++. It is designed to make cross-platform development easy. Its features include project management, application wizards, an integrated interactive debugger, and a powerful source editor with source browsing and syntax highlighting.

The goal of this tool is to allow a developer to compile and debug applications entirely on a remote computer, while editing and issuing compile and debug commands through a local interface. BVRDE supports a variety of network protocols to allow connectivity with various remote systems. This includes FTP and secure & encrypted protocols such as SSH and SFTP.

More Screen Shots

Download

How to download a Streaming Video ?

2009-09-08T20:48:00.001-07:00

Most of web sites broadcast multimedia streams. If you can download that stream then you can watch it when you are in offline.
"SDP Multimedia" is a good tools for that purpose.

What can SDP Downloader actually do?
The current free version of SDP can download the following protocols, remember this is for Windows Media Streaming only.
HTTP v1.0 streaming protocol - sometimes referred to as MMSH.
HTTP progressive (simple http download)
MMS, MMST and MMSU over both TCP and UDP transport protocols.
Preview the stream while downloading - using your favorite existing media player.
Download Live and Pre recorded videos and music straight to your hard drive. Like a video recorder.
Note that the free version of SDP will still be maintained as best as possible - updates should still appear.
Types of URL to look for usually start with "MMS://, MMST://, or HTTP://" and end with something like ".asf, .wmv or .wma" etc..

>>>> Download <<<<
--
_____ http://janaka077.blogspot.com ____

Unlock the Huawei E220 HSDPA modem

2009-09-06T21:56:00.000-07:00

Huawei e220 or Vodafone e220 is the HSDPA modem we usually get from Dialog Telecom or Mobitel GSM (probably from Airtel) when we purchase a mobile broadband connection. But usually it's operator locked, so we can't switch between networks when the current ISP starts treating us like dust. Here I'm gonna explain how I did that and I'll try to be as simple as I can...

Disclaimer: I’m not responsible, nor will be held liable, for anything you do with the information I provide in this tutorial. Use it at your own risk.

Ok, since we are done with the traditional "Disclaimer" Lets see what you have to do.

First you'll have to download the following tools.
e220 CardLock UnLocker
e220 Updater version 11.117.09.04.00
QC Mobile Analysis Tool
Hex editor

Basically, Unlocking the e220 is simple as running the E220 CardLock Unlock tool and entering the unlock code and pressing the "Ok" button. But that's when you "know" the unlock code.

So how do we find the unlock code for our modem? that's where the other tools come in handy.

Plug your modem to the computer and run the E220 Updater. Wait till it detects your modem and then press the "Cancel" button. yes! Cancel it! This is just to make it easier for the "real tool" to identify the modem.

Now open the QC BQS Analyzer and click on Hardware forensics menu, select Use Com/USB Port

Now the "QC Com Diag" window should be open. Most of the time your modem and com port is automatically selected on the Serial Com port drop down list. If not you'll have to select it manually. And then click on the "Send Cmd" button and wait till the message "Successfully sent command" appears on the bottom right.

Now Select " Read EFS" from the Diag Functions drop down menu and Click the "Lets go" button. When it asks, enter the file name e220.bin and save it. A message saying "Successfully read EFS" should appear.

Now its time to do some hex reading :) Open the e220.bin file from your Hex Editor. And search for the ASCII string Sd, (including the comma) or Search for the for the Hex string 53 64 2c
After few random characters you'll see a clean 8 digit code. Believe me, it's easily recognizable and guess what! thats our Unlock code :D

Once you've found the unlock key all you have to do is enter it on the CardLock Unlock utility and click "OK" And your modem is... Unlocked!!! :D

Hope this will be helpful. I'd absolutely love to know your views on this. Good luck with unlocking your modems :)

Run time Configurability with Java (JDK7)

2009-08-25T22:28:00.000-07:00

In JDK - 7 , Scripting support is provided. I thing it is very interesting and Impotent Feature. JavaScript is the language that you have to use for Scripting

Here is the features that point out by the SUN.
Some useful characteristics of scripting languages are:

Convenience: Most scripting languages are dynamically typed. You can usually create new variables without declaring the variable type, and you can reuse variables to store objects of different types. Also, scripting languages tend to perform many type conversions automatically, for example, converting the number 10 to the text "10" as necessary.
Developing rapid prototypes: You can avoid the edit-compile-run cycle and just use edit-run!
Application extension/customization: You can "externalize" parts of your application - like configuration scripts, business logic/rules and math expressions for financial applications.
"Command line" shells for applications -for debugging, runtime/deploy time configuration etc. Most applications have a web-based GUI configuaration tool these days. But sysadmins/deployers frequently prefer command line tools. Instead of inventing ad-hoc scripting language for that purpose, a "standard" scripting language can be used.

Here is a Screen Shots of a Sample .

Easy source code backup - bash script

2009-07-28T04:01:00.000-07:00

Most of developers (specially Linux peoples) are used to backup their code by making tar-balls (making .tar files). That is the most preliminary source code version (CVS) system. But you have to rename those tar-balls by the date and time for more clarity. Here is a bash script for that purpose.

How to use:

First create a folder for keep your backups
>mkdir /home/backups

Create a folder for your bash script and copy the bash script file to that folder
>mkdir / home/scripts

Add that folder to environment variable.
Ex:
> PATH=$PATH:/home/scripts

Then goto the source folder.
>cd /home/project/project_one/

Run the script without any comment
>backup

Or you can add a comment for your backup
>backup “This is my initial backup”

This will create two files. Those are “project_one.txt” and “project_one-20090708-1120.gz”

The text file keep your comments regarding your backups.

Download Script

Make the Life easy with Google Calender

2009-07-09T03:15:00.000-07:00

Organizing your schedule shouldn't be a burden. With Google Calendar, it's easy to keep track of life's important events all in one place.

1. Share your schedule

Let your co-workers, family, and friends see your calendar, and view schedules that others have shared with you. When you know when everyone is free or busy, scheduling is a snap.

2. Get your calendar on the go

With two-way syncing to your mobile phone's built-in calendar or a mobile version of Google Calendar that's made for the small screen, you can access your calendar while you're away from your desk.

3. Never forget another event again

Customizable reminders help you stay on schedule. You can choose to be notified by email or get a text message sent right to your mobile phone.

4. Send invitations and track RSVPs

Invite other people to events on your calendar. Guests can RSVP to your events by email or via Google Calendar.

5. Sync with your desktop applications

Access your calendar however and whenever you want by syncing events with Microsoft Outlook, Apple iCal and Mozilla Sunbird.

6. Work offline

Know where you're supposed to be even when you don't have internet access. With offline access, you can view a read-only version of your calendar no matter where you are.

My Google Calender....

Source Code line counting tool - SrcAnalyser (Freeware)

2009-06-28T22:53:00.001-07:00

SrcAnalyser analysis source folders and generate report about the source codes, It measures the total code lines, comment lines, blank lines in the source files. SrcAnalyser can analysis c++ and Java codes.

Features:

Count Comment line, Source lines and blank lines in Source files.
Support for Java and C++ source codes.
Report can be export as a plain text file.

[ Download version 1.0 ] [Home Page]

Use global or static variable in Multi-threaded Application (TLS)

2009-05-14T03:19:00.000-07:00

If you use a static or a global variable in a function it is not a thread safe method. Because if that method is invoked by the multiple threads then the value of the static variable is not accurate.
TLS (Thread local storage) is a good solution for this problem. In TLS, Same variable pointed to different memory locations in different thread. Actually that variable becomes a non-static variable relative to the application.
Most of the programming languages supported for TLS. In here I discuss only C and Java’s TLS implementation.

Java:

public static void main(String args[]){
ThreadLocal local = new ThreadLocal();
local.set(10);
System.out.println(local.get());
}

GCC:
static __thread int x = 0;
x = 0;
cout<<"x = "<<>

References:

http://en.wikipedia.org/wiki/Thread-Specific_Storage
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/ThreadLocal.html

WinSCP Portable FTP Client

2009-05-13T21:50:00.000-07:00

WinSCP Portable is a free SFTP, FTP and SCP client for Windows with lots of great features:

An Open source Application
PuTTY Portable integration
Graphical user interface
Translated into several languages
All common operations with files
Support for SFTP and SCP protocols over SSH-1 and SSH-2 and plain old FTP protocol
Directory synchronization in several semi or fully automatic ways
Integrated text editor
Support for online editing (Not need to copy files to client PC for editing)
Support for SSH password, keyboard-interactive, public key and Kerberos (GSS) authentication
Windows Explorer-like and Norton Commander-like interfaces
Optionally stores session information

[ Download 1.5MB ]

Tips of fine-tuning of Garbage Collector in JVM

2009-03-29T21:15:00.000-07:00

All Java developers don’t concern on Memory Management while developing application. Since they totally relay on JVM for that task. But JVM always done it as its default way. Until JVM doesn’t have a knowledge about your application and running platform your can’t get the best performance of Application.

But now you can tune up the JVM for specific Application and Environment. Since J2SE 5.0 release Java Hotspot JVM provide a rich configuration capabilities for Garbage Collector (GC). Older versions also have some capabilities. Rest of this Article will provide summarized information about Configurations of GC.

GC has several algorithms for collecting garbage memory (no longer referenced Memory)

1. Serial and Parallel
Parallel GC is good for multi-processor systems

2. Concurrent versus Stop-the-world
When stop-the-world performs JVM stop other executions. So GC do not worry about modification of objects while cleaning. But Concurrent garbage collection has some over head.

3. Compacting versus Non-compacting versus Copying
In Compacting GC Compact free memory as one linear memory space but there is a memory moving overhead.

Throughput Goal
The throughput goal is measured in terms of the time spent doing garbage collection and the time spent
outside of garbage collection (referred to as application time). The goal is specified by the command line
option
-XX:GCTimeRatio=n
The ratio of garbage collection time to application time is
1 / (1 + n)
For example -XX:GCTimeRatio=19 sets a goal of 5% of the total time for garbage collection. The
default goal is 1% (i.e. n= 99). The time spent in garbage collection is the total time for all generations.
If the throughput goal is not being met, the sizes of the generations are increased in an effort to
increase the time the application can run between collections. A larger generation takes more time to
fill up.

Here is some configuration flags for GC tuning.

Garbage Collector Selection

Option	Garbage Collector Selected
–XX:+UseSerialGC	Serial
–XX:+UseParallelGC	Parallel
–XX:+UseParallelOldGC	Parallel compacting
–XX:+UseConcMarkSweepGC	Concurrent mark–sweep (CMS)

Garbage Collector Statistics

Option	Description
–XX:+PrintGC	Outputs basic information at every garbage collection.
–XX:+PrintGCDetails	Outputs more detailed information at every garbage collection.
–XX:+PrintGCTimeStamps	Outputs a time stamp at the start of each garbage collection event. Used with
–XX:+PrintGC or –XX:+PrintGCDetails	to show when each garbage collection begins.

For More Information refer : http://java.sun.com/j2se/reference/whitepapers/memorymanagement_whitepaper.pdf

Convert SWF to Screenserver

2009-02-18T00:09:00.000-08:00

InstantStorm is a Windows freeware tool for creating Flash based screensavers with many advanced features.
All you have to do is to choose a SWF file, set screensaver parameters and compile an executable installer. All 32-bit and 64-bit versions of Microsoft Windows are fully supported, including Windows 95 and Windows Vista. And the best of all—there are no nag screens or other annoying stuff. Unlike many other tools, InstantStorm allows you to fully customize your screensaver's about box, installer and uninstaller including all texts.

[ Home Page ] [ Download (2.72MB) ]

GUI:

Wizard:

Enjoy with Music while Coding

2009-02-13T01:47:00.000-08:00

Music is good medicine for stress.
But It will make you more tired when your media player interrupting for your work. Because Most of media players need more resources (CPU, Memory etc) . Cool player is a good solution for those problems.

Best Features:

Work with minimum memory (4 - 8MB)
Minimum CPU utilization (Almost 0.0)
Direct IO access (No Operating System Overhead)
Stay at System tray ( Save one slot of your Task bar).
Free And Open Source (GNU General Public License)
Advanced Playlist editor

[Home Page] [Download Cool Player]

Play list

System Tray

Install Windows XP on Apple NoteBook

2009-02-03T02:16:00.000-08:00

How to install Windows XP or Vista on Apple Laptop?
Above question is very hard for some people. But Mac people provide a better solution for that problem. That is Mac's Boot Camp. That allows configure your laptop for dual boot , Windows and Mac.

Visit for More information Boot camp. and Install Guide

Better way of Tracking your Site or Blog (Google Analitics)

2009-02-01T21:17:00.000-08:00

During last few months I tried to find out ways of analyzing web traffic of my blog, visitors of my blog. I found several traffic analyzing web sites. They offers verity of services, Some of Those are free services. But they force us to buy their premium package.

Finally, I found a better solution for my requirement. That is “Google Analytics“. Only condition of Google Analytics is you should have a google account.

Google Analytics offers following facilities.

Segmented visitor’s information.
Several sites can be tracked by using single account.
Display visitor’s geographical information.
Email reporting.
Customizable report structure and user’s dashboard.
Trusted Service.

Here is a tour of Google Analytics. ( Tour )

Here is Screen shots of Google analytic.Visit Google Analytic

Floating point Reminder in Java

2009-01-28T03:09:00.000-08:00

Calculating reminder of Integer1 and Integer2 is simple, It is only single line, integer1%integer2. But How to Calculate reminder of two floating point Numbers ???

Use Java’s Math packager. There is function call “IEEEremainder”.
Here is a sample code.
---------------------------------------------------------------------
import java.math.*;

class frmd{

public static void main(String args[]){

double d1 = 5.0d;
double d2 = 2.1d;

double dReminder = Math.IEEEremainder(d1, d2);

System.out.println("Reminder = " + dReminder);

}

}
------------------------------------------------------------------
Result:
Reminder = 0.7999999999999998

Lets look how this function works.
D1 = 5.0
D2 = 2.1

Then reminder is 0.7999999999999998 . That value is very close to 0.8.
That means 0.8 = 5.0 –(2.1 x n ) ;
n is a integer and it is equals to 2

HxD - Freeware Hex Editor and Disk Editor (portable)

2009-01-28T02:28:00.000-08:00

HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and modifying of main memory (RAM), handles files of any size.

The easy to use interface offers features such as searching and replacing, exporting, checksums/digests, insertion of byte patterns, a file shredder, concatenation or splitting of files, statistics and much more.

Editing works like in a text editor with a focus on a simple and task-oriented operation, as such functions were streamlined to hide differences that are purely technical.
For example, drives and memory are presented similar to a file and are shown as a whole, in contrast to a sector/region-limited view that cuts off data which potentially belongs together. Drives and memory can be edited the same way as a regular file including support for undo. In addition memory-sections define a foldable region and inaccessible sections are hidden by default.

Furthermore a lot of effort was put into making operations fast and efficient, instead of forcing you to use specialized functions for technical reasons or arbitrarily limiting file sizes. This includes a responsive interface and progress indicators for lengthy operations.

[ Download ]

Google launch new Knowledge Center (beta)

2009-01-22T00:16:00.000-08:00

Latest Google project is “Knol”, a unit of knowledge. You will think that Knol is a some kind of blog. But it offers more functionality than a simple blog. Because it allows users to develop their knowledge through a collaborative task. For an example, you can allow people to edit your articles and rate your article. Not only that Knol allows you to express your ideas in different languages.
Visit knol is the better way to get the real feeling.

Visit – Google Knol

Here is my Google Knol.

Talking Web Sites

2009-01-06T03:27:00.000-08:00

Some time you may need to add voice cut in to your websites, I mean text-to-speech gadgets. It can be read user's input text or text in web page. Now it is very easy. Visit www.vozme.com
Here What i got from there.

How to use FTP file upload & download in your Java application?

2009-01-01T21:55:00.000-08:00

Some times developers need to access a FTP Server fro file uploading and downloading. But they don’t want other functionalities of FTP such as directory manipulations, file and folder renaming and file listing. So it is no need to use fully implemented FTP library in Application. Those FTP libraries make the application more heavy and unstable at runtime as well as Application source code become more complex. Developers need to put more effort for debugging those applications.
All above problems can be over come by using a simple FTP java class. Main goal of this post is introduce a simple FTP Client class for java developers.

Features:
1. No need to use library in project. (No dependency “jar” files).
2. Open source (Easy to debugging).
3. Easy to use interface functions. ( upload() & download()).

Here is usage example code.
class test{ public static void main(String args[]) throws Exception{ FTP ftp = new FTP(); boolean DownloadSucess = ftp.download("127.0.0.1","admin","admin"," temp2.JPG","123.jpg"); boolean uploadSucess = ftp.upload("127.0.0.1","admin","admin","test.java","test.java"); System.out.println(DownloadSucess); System.out.println(uploadSucess); } }

Download source fils (Download)

Note: FTP Server should support for Passive mode.
I try this code with Filezilla Server version 0.9.8 successfully.

Easy way to download from Rapidshare

2008-12-18T00:40:00.000-08:00

If your are using a free account of RapidShare (http://www.rapidshare.com ) You may have face various difficulties such Waiting for count downs, downloads proceed on single connection and unable to do multiple downloads.
BUT Premium Accounts are very comfortable and you have to pay for that.

Now you can access Premium link FREE. Visit http://megaez.com

Step 1:
Paste RapidShare URL in Textbox and press “Download”.
Step 2:
Then it prompt a URL. Now you can easily download it.

Note: Some times, you may see the megaez is not responding. Because it needs, active account to continue downloads.

Enjoy with MEGAEZ .com …………..

Only for Solaris Users

2008-12-04T04:00:00.000-08:00

This commands are very helpful when you need to debug your application or If you want to monitor application performances.

System and process monitoring commands

prstat
ptree
pstack
pkill
pmap
pfiles

prstat

prstat is a process statistic monitoring utility. It shows CPU utilization, memory usage, user, process ID and few other information of each process.

Example:
$ prstat

PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
28465 ex19 46M 44M sleep 59 0 0:17:22 0.3% WSA/1
21861 ex19 67M 50M sleep 59 0 0:17:23 0.3% SHU/1
28385 ex19 120M 101M sleep 59 0 0:15:08 0.2% OrderC/5
4420 ex7 141M 121M sleep 59 0 0:01:29 0.2% FDriver_/4
21784 ex19 12M 11M sleep 59 0 0:14:44 0.2% SGA/1
17050 ex7 120M 96M sleep 59 0 0:03:24 0.2% Orche/5
16684 ex7 18M 16M sleep 59 0 0:02:50 0.2% SGA/1
17413 ex7 121M 97M sleep 59 0 0:03:17 0.2% Iate/4
28433 ex19 41M 17M sleep 59 0 0:11:17 0.2% ServiceD/4
17470 ex7 9160K 7712K sleep 59 0 0:02:09 0.2% SSM/1
3952 ex20 9160K 7860K sleep 59 0 0:00:37 0.2% SSM/1
17214 ex7 25M 20M sleep 59 0 0:02:13 0.2% Sequr/3
28536 ex19 7912K 6464K sleep 59 0 0:10:17 0.2% SSM/1
Total: 13 processes, 575 lwps, load averages: 4.31, 4.32, 4.31

If you need to view information of selected process. You can do by giving process ID.

Example:

$ prstat –p 28465
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
28465 ex19 46M 44M sleep 59 0 0:17:22 0.3% WSA/1

Total: 1 processes, 575 lwps, load averages: 4.31, 4.32, 4.31

ptree

This command shows parent-child relation ship of running processes. When it execute with out any argument then it shows information of all process. If process id is specified then it only shows information regarding that process.

Example:

With out Process ID:
$ptree
7 /lib/svc/bin/svc.startd
258 /usr/lib/saf/sac -t 300
290 /usr/lib/saf/ttymon
270 /usr/lib/saf/ttymon -g -d /dev/console -l console -m ldterm,ttcompat -h -p v20z
9 /lib/svc/bin/svc.configd
109 /usr/lib/sysevent/syseventd
306 /usr/sbin/cron
3119 sh -c chmod 755 $HOME/run_prstat; ./run_prstat
3127 /bin/bash ./run_prstat
11381 prstat -n 50 -c 5
11382 sleep 5
307 /usr/lib/inet/inetd start
16055 /bin/sh /lib/svc/method/rpc-ttdbserverd
16065 /usr/openwin/bin/rpc.ttdbserverd
115 /usr/sbin/in.telnetd
118 -bash

With Process ID:

$ ptree 22961
301 /usr/lib/ssh/sshd
21571 /usr/lib/ssh/sshd
21578 /usr/lib/ssh/sshd
21580 -ksh
22961 /opt/filebench/bin/filebench
22962 shadow -a shadow -i 1 -s ffffffff10000000 -m /var/tmp/fbench9Ca
22963 shadow -a shadow -i 2 -s ffffffff10000000 -m /var/tmp/fbench9Ca
22964 shadow -a shadow -i 3 -s ffffffff10000000 -m /var/tmp/fbench9Ca
22965 shadow -a shadow -i 4 -s ffffffff10000000 -m /var/tmp/fbench9Ca

pstack

The stacks of all or specific threads within a process can be displayed with the pstack command. This is very help full when you developing multithreaded applications.

Example:
$ pstack 23154
23154: shadow -a shadow -i 193 -s ffffffff10000000 -m /var/tmp/fbench9Cai2S
----------------- lwp# 1 / thread# 1 --------------------
ffffffff7e7ce0f4 lwp_wait (2, ffffffff7fffe9cc)
ffffffff7e7c9528 _thrp_join (2, 0, 0, 1, 100000000, ffffffff7fffe9cc) 38
0000000100018300 threadflow_init (ffffffff3722f1b0, ffffffff10000000, 10006a658, 0, 0, 1000888b0) 184
00000001000172f8 procflow_exec (6a000, 10006a000, 0, 6a000, 5, ffffffff3722f1b0) 15c
0000000100026558 main (a3400, ffffffff7ffff948, ffffffff7fffeff8, a4000, 0, 1) 414
000000010001585c _start (0, 0, 0, 0, 0, 0) 17c
---------------- lwp# 2 / thread# 2 --------------------
000000010001ae90 flowoplib_hog (30d40, ffffffff651f3650, 30d40, ffffffff373aa3b8, 1, 2e906) 68
00000001000194a4 flowop_start (ffffffff373aa3b8, 0, 1, 0, 1, 1000888b0) 408
ffffffff7e7ccea0 _lwp_start (0, 0, 0, 0, 0, 0)

pkill

The pkill command provides a convenient way to send signals to a list or processes matching certain criteria.

Example:

$ pkill a.out

pmap

The pmap command inspects a process, displaying every mapping within the process's address space. The amount of resident, nonshared anonymous, and locked memory is shown for each mapping. This allows you to estimate shared and private memory usage.

Example:
$ pmap -x 102908
102908: sh
Address Kbytes Resident Anon Locked Mode Mapped File
00010000 88 88 - - r-x-- sh

00036000 8 8 8 - rwx-- sh
00038000 16 16 16 - rwx-- [ heap ]
FF260000 16 16 - - r-x-- en_.so.2
FF272000 16 16 - - rwx-- en_US.so.2
FF280000 664 624 - - r-x-- libc.so.1
FF336000 32 32 8 - rwx-- libc.so.1
FF360000 16 16 - - r-x-- libc_psr.so.1
FF380000 24 24 - - r-x-- libgen.so.1
FF396000 8 8 - - rwx-- libgen.so.1
FF3A0000 8 8 - - r-x-- libdl.so.1
FF3B0000 8 8 8 - rwx-- [ anon ]
FF3C0000 152 152 - - r-x-- ld.so.1
FF3F6000 8 8 8 - rwx-- ld.so.1
FFBFE000 8 8 8 - rw--- [ stack ]
-------- ----- ----- ----- ------
total Kb 1072 1032 56 -

pfiles

All opened file descriptors of a process can be list by pfiles command.(All disk files, Sockets, and other IO devices)

Example:
$ pfiles 21571
21571: /usr/lib/ssh/sshd
Current rlimit: 256 file descriptors
0: S_IFCHR mode:0666 dev:286,0 ino:6815752 uid:0 gid:3 rdev:13,2
O_RDWR|O_LARGEFILE
/devices/pseudo/mm@0:null
1: S_IFCHR mode:0666 dev:286,0 ino:6815752 uid:0 gid:3 rdev:13,2
O_RDWR|O_LARGEFILE
/devices/pseudo/mm@0:null
2: S_IFCHR mode:0666 dev:286,0 ino:6815752 uid:0 gid:3 rdev:13,2
O_RDWR|O_LARGEFILE
/devices/pseudo/mm@0:null
3: S_IFCHR mode:0000 dev:286,0 ino:38639 uid:0 gid:0 rdev:215,2
O_RDWR FD_CLOEXEC
/devices/pseudo/crypto@0:crypto
4: S_IFIFO mode:0000 dev:294,0 ino:13099 uid:0 gid:0 size:0
O_RDWR|O_NONBLOCK FD_CLOEXEC
5: S_IFDOOR mode:0444 dev:295,0 ino:62 uid:0 gid:0 size:0
O_RDONLY|O_LARGEFILE FD_CLOEXEC door to nscd[89]
/var/run/name_service_door
6: S_IFIFO mode:0000 dev:294,0 ino:13098 uid:0 gid:0 size:0
O_RDWR|O_NONBLOCK FD_CLOEXEC

prtdiag
prtdiag will display system diagnostic information. That include cpu, memory, PCI devices and more.

Example:
$prtdiag
==== Processor Sockets ====================================

Version Location Tag
-------------------------------- --------------------------
AMD CPU0-Socket 940
AMD CPU1-Socket 940

==== Memory Device Sockets ================================

Type Status Set Device Locator Bank Locator
------- ------ --- ------------------- --------------------
DRAM in use 1 DIMM0 CPU0
DRAM in use 1 DIMM1 CPU0
DRAM empty 2 DIMM2 CPU0
DRAM empty 2 DIMM3 CPU0
DRAM in use 3 DIMM0 CPU1
DRAM in use 3 DIMM1 CPU1
DRAM empty 4 DIMM2 CPU1
DRAM empty 4 DIMM3 CPU1

==== On-Board Devices =====================================

==== Upgradeable Slots ====================================

ID Status Type Description
--- --------- ---------------- ----------------------------
1 available PCI-X PCIX Slot 1
2 available PCI-X PCIX Slot 2

prtconf
The prtconf command prints the system configuration information. The output includes the total amount of memory, and the configuration of system peripherals formatted as a device tree.

Example:
System Configuration: Sun Microsystems i86pc
Memory size: 8128 Megabytes
System Peripherals (Software Nodes):

i86pc
scsi_vhci, instance #0
isa, instance #0
motherboard (driver not attached)
i8042, instance #0
mouse, instance #0
keyboard, instance #0
asy, instance #0 (driver not attached)
fdc, instance #0
fd, instance #0
fd, instance #1 (driver not attached)
pci, instance #0
pci1022,7460, instance #0
pci17c2,10, instance #0

psrinfo
Psrinfo displays the CPU information.

Example:
>psrinfo -v
Status of virtual processor 0 as of: 03/12/2009 12:23:25
on-line since 01/25/2009 05:50:56.
The i386 processor operates at 2593 MHz,
and has an i387 compatible floating point processor.
Status of virtual processor 1 as of: 03/12/2009 12:23:25
on-line since 01/25/2009 05:50:59.
The i386 processor operates at 2593 MHz,
and has an i387 compatible floating point processor.
Status of virtual processor 2 as of: 03/12/2009 12:23:25
on-line since 01/25/2009 05:51:01.
The i386 processor operates at 2593 MHz,
and has an i387 compatible floating point processor.
Status of virtual processor 3 as of: 03/12/2009 12:23:25
on-line since 01/25/2009 05:51:03.
The i386 processor operates at 2593 MHz,
and has an i387 compatible floating point processor.

Referances:
http://www.solarisinternals.com

2008-07-14T03:43:00.000-07:00

Why Java Will Always Be Slower than C++

2008-07-13T21:23:00.000-07:00

Why Java Will Always Be Slower than C++

"Java is high performance. By high performance we mean adequate. By adequate we mean slow." - Mr. Bunny

Anybody that has ever used a non-trivial Java program or has programmed in Java knows that Java is slower than native programs written in C++. This is a fact of life, something that we accept when we use Java.

However, many folks would like to convince us that this is just a temporary condition. Java is not slow by design, they say. Instead, it is slow because today's JIT implementations are relatively young and don't do all the optimizations they could.

This is incorrect. No matter how good the JITs get, Java will always be slower than C++.

The Idea

People who claim that Java can be as fast as C++ or even faster often base their opinion on the idea that more disciplined languages give the compiler more room for optimization. So, unless you are going to hand-optimize the whole program, the compiler will do a better job overall.

This is true. Fortran still kicks C++'s ass in numeric computing because it is more disciplined. With no fear of pointer aliasing the compiler can optimize better. The only way that C++ can rival the speed of Fortran is with a cleverly designed active library like Blitz++.

However, in order to achieve overall results like that, the language must be designed to give the compiler room for optimization. Unfortunately, Java was not designed that way. So no matter how smart the compilers get, Java will never approach the speed of C++.

The Benchmarks

Perversely, the only area in which Java can be as fast as C++ is a typical benchmark. If you need to calculate Nth Fibonacci number or run Linpack, there is no reason why Java cannot be as fast as C++. As long as all the computation stays in one class and uses only primitive data types like int and double, the Java compiler is on equal footing with the C++ compiler.

The Real World

The moment you start using objects in your program, Java looses the potential for optimization. This section lists some of the reasons why.

1. All Objects are Allocated on the Heap

Java only allocates primitive data types like int and double and object references on the stack. All objects are allocated on the heap.

For large objects which usually have identity semantics, this is not a handicap. C++ programmers will also allocate these objects on the heap. However, for small objects with value semantics, this is a major performance killer.

What small objects? For me these are iterators. I use a lot of them in my designs. Someone else may use complex numbers. A 3D programmer may use a vector or a point class. People dealing with time series data will use a time class. Anybody using these will definitely hate trading a zero-time stack allocation for a constant-time heap allocation. Put that in a loop and that becomes O (n) vs. zero. Add another loop and you get O (n^2) vs. again, zero.

2. Lots of Casts

With the advent of templates, good C++ programmers have been able to avoid casts almost completely in high-level programs. Unfortunately, Java doesn't have templates, so Java code is typically full of casts.

What does that mean for performance? Well, all casts in Java are dynamic casts, which are expensive. How expensive? Consider how you would implement a dynamic cast:

The fastest thing you could do is assign a number to each class and then have a matrix that tells if any two classes are related, and if they are, what is the offset that needs to be added to the pointer in order to make the cast. In that case, the pseudo-code for the cast would look something like this:

 DestinationClass makeCast (Object o, Class destinationClass) {

  Class sourceClass = o.getClass (); // JIT compile-time
  int sourceClassId = sourceClass.getId (); // JIT compile-time        
    int destinationId = destinationClass.getId ();
     int offset = ourTable [sourceClassId][destinationClassId];  
      
    if (offset != ILLEGAL_OFFSET_VALUE) {          
     return <object o adjusted for offset>;      
    }else {
         throw new IllegalCastException ();      
    }
 }

Quite a lot of code, this little cast! And this here is a rosy picture - using a matrix to represent class relationships takes up a lot of memory and no sane compiler out there would do that. Instead, they will either use a map or walk the inheritance hierarchy - both of which will slow things down even further.

3. Increased Memory Use

Java programs use about double the memory of comparable C++ programs to store the data. There are three reasons for this:

Programs that utilize automatic garbage collection typically use about 50% more memory that programs that do manual memory management.

Many of the objects that would be allocated on stack in C++ will be allocated on the heap in Java.

Java objects will be larger, due to all objects having a virtual table plus support for synchronization primitives.

A larger memory footprint increases the probability that parts of the program will be swapped out to the disk. And swap file usage kills the speed like nothing else.

4. Lack of Control over Details

Java was intentionally designed to be a simple language. Many of the features available in C++ that give the programmer control over details were intentionally stripped away.

For example, in C++ one can implement schemes that improve the locality of reference. Or allocate and free many objects at once. Or play pointer tricks to make member access faster. Etc.

None of these schemes are available in Java.

5. No High-Level Optimizations

Programmers deal with high-level concepts. Unlike them, compilers deal exclusively with low-level ones. To a programmer, a class named Matrix represents a different high-level concept from a class named Vector. To a compiler, those names are only entries in the symbol table. What it cares about are the functions that those classes contain, and the statements inside those functions.

Now think about this: say you implement the function exp (double x, double y) that raises x to the exponent y. Can a compiler, just by looking at the statements in that function, figure out that exp (exp (x, 2), 0.5) can be optimized by simply replacing it with x? Of course not!

All the optimizations that a compiler can do are done at the statement level, and they are built into the compiler. So although the programmer might know that two functions are symmetric and cancel each other now, or that the order of some function calls is irrelevant in some place, unless the compiler can figure it out by looking at the statements, the optimization will not be done.

So, if a high-level optimization is to be done, there has to be a way for the programmer to specify the high-level optimization rules for the compiler.

No popular programming language/system does this today. At least not in the totally open sense, like what the Microsoft's Intentional Programming project promises. However, in C++ you can do template metaprogramming to implement optimizations that deal with high-level objects. Temporary elimination, partial evaluation, symmetric function call removal and other optimizations can be implemented using templates. Of course, not all high-level optimizations can be done this way. And implementing some of these things can be cumbersome. But a lot can be done, and people have implemented some snazzy libraries using these techniques.

Unfortunately, Java doesn't have any metaprogramming facilities, and thus high-level optimizations are not possible in Java.

So...

Java, with the current language features, will never be as fast as C++. This pretty much means that it's not a sensible choice for high-performance software and the highly competitive COTS arena. But its small learning curve, its forgiveness, and its large standard library make it a good choice for some small and medium-sized in-house and custom-built software.

Innovation & exploration

Evolution of the Hard Disk !

[video] - The Future of Energy Management

[CODE] Java MCast Sender & Receiver

[WEB] Shorten URL of your Blog or Web Site by Google Url Shortener

[ARTICLE] - Google Corporate Philosophy

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Java 7 introduced the support of String in switch-case statements [CODE]

jQuery for Dummies [Ebook]

How Browsers Work - Behind the Scenes of Modern Web Browsers

CSS cheat Sheet [PDF]

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Google Web Fonts Provides a Variety of Fonts for Your Site

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Use PAC file to configure your proxy settings

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After the Deadline use artificial intelligence and natural language processing technology to find your writing errors and offer smart suggestions.

Use After the Deadline

Selenium is a suite of tools to automate web browsers

1. Begin: write and run tests in Firefox.

2. Customize: your language, your browser.

3. Deploy: scale out, speed up.

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FastStone Photo Resizer

Check errors in Your CSS scripts - CSS Lint (online)

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Dropdo: Online File Viewer.

USBDeview - List all connected USB Devices.

RegExr: Free Online RegEx Testing Tool

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Xinorbis 5.2 -- Free Hard Drive Space Analyzer with Advanced Reporting

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The document tab

The signature tab

Download iSafePDF

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FTP Rush: A Free Windows FTP Client

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EtherCodes let you share and collaborate codes with other peers in real-time, with simply a web browser.

Easy Desktop Organizer

Grep GUI for Windows

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Batch Compress/Resize Images with RIOT

Convert your videos quickly, easily, and all at once with WinFF & FFmpeg.

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SPlayer: A Light and Fast Media Player

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With NetWorx You Can ...

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1. Share your schedule

2. Get your calendar on the go

3. Never forget another event again

4. Send invitations and track RSVPs

5. Sync with your desktop applications

6. Work offline

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WinSCP Portable FTP Client