How to install java in ubuntu 8.10

Following are the packages available in ubuntu repos for java:

1.sun-java6-bin - Contains the binaries
2.sun-java6-demo - Contains demos and examples
3.sun-java6-doc - Contains the documentation
4.sun-java6-fonts - Contains the Lucida TrueType fonts from the JRE
5.sun-java6-jdk - Contains the metapackage for the JDK
6.sun-java6-jre - Contains the metapackage for the JRE
7.sun-java6-plugin - Contains the plug-in for Mozilla-based browsers
8.sun-java6-source - Contains source files for the JDK

To install enable the multiple repos from System-->Administration-->Software Sources then copy and paste the following in your terminal:
sudo apt-get install sun-java6-jre sun-java6-plugin sun-java6-fonts
or Alternatively you can find and click the above mentioned packages in Synaptic Package Manager and then Apply.