Installing Java

The simplest way is to go to Synaptics Package Manager and find it. But MAY BE U MISS OUT THE LATEST VERSION......
Jus chill and download the "jdk.bin" file from java.sun.com

• Save the .bin file to ur hard disk where u have access rights.
• Go to terminal- to the location u saved the file.
• Switch as a root user by su command.
• Type chmod +x filename.bin //Eg, chmod +x jdk-6u12-linux-i586.bin
  
• Now run the binary file using ./filename.bin
• Accept terms & condn and the installation would began.

After installation u may not able to run ur java programs

• Open terminal, go to location where u wish to run java & javac commands.
• Type sudo export PATH=/path/jdk/bin:$PATH
• For eg. sudo export PATH=/usr/local/jdk1.6.0_12/bin:$PATH
  

Don't forget to install the java docs from the same website.

• Download the .zip file.
• Unzip by unzip filename.zip.
• Preferably place it on the same location as ur JDK.
• Save the index.html as a bookmark in ur browser.
• Docs are of sheer importance as they provide details about all built-in classes of Java so dare not to ignore it.