Java problems

[Jack Jackson]

What oh what is the flippin name of the Java to install please?

user at br33z:~$ sudo apt-cache search sun-j2
sun-j2re1.4 - Java(TM) 2 RE, Standard Edition, Sun Microsystems(TM)
sun-j2re1.5 - Java(TM) 2 RE, Standard Edition, Sun Microsystems(TM)
user at br33z:~$ sudo apt-cache show sun-j2rel.5
W: Unable to locate package sun-j2rel.5
E: No packages found

Why ? What am I doing wrong? Also how can I uninstall the 

java version "1.4.2"
gij (GNU libgcj) version 4.0.2 20050808 (prerelease) (Ubuntu
4.0.1-4ubuntu9)

that I put on there? Since I can't find a package name to remove I
cannot remove it

Thanks in advance