How to install (JRE) Java in Ubuntu (8.04)

I'm trying to install Java at my new Ubuntu and I'm getting some difficulties.
I was scrolling Synaptic Package Monitor for a while and i couldn't find it.

So i Google it..

There are these packages:

sun-java6-bin sun-java6-fonts sun-java6-jre sun-java6-src
sun-java6-demo sun-java6-javadb sun-java6-plugin
sun-java6-doc sun-java6-jdk sun-java6-source

All you (probably) need is:
$ sudo apt-get install sun-java6-jre sun-java6-fonts sun-java6-plugin

Note: The package sun-java6-plugin contain the Firefox plugin.