Has anyone done any JAVA programming?
Can you suggest any good tools?

For java programming you want to download a copy of eclipse from Here

It forms the basis of many commercial development systems and has a very large community of users. Oh yeah, and it's free!! :-)

The only other development environment I would recommend is Netbeans IDE, also free. But from experience eclipse is faster, has nicer features and a more regular release cycle.

Im currently doing a Open University computer science degree (Apparently after 10 years in the industry i have to ge some qualifactions!) and the current course im doing is M254 Java Programming which recommends Borlands JBuilder 2006 enterprise version which is very good.
After the trial period ends you just lose the "Enterprise" functionality but you can still use it fine.

Eclipse Is Better and is free. I have been using it for the last 3 years and it is much better than anything else, even commercial stuff.

If you are the kind of person that likes to go 'under the hood' then it may be better to use note pad and the development kit to start with to help in understanding the language packages and compiler etc, as the IDE's tend to hide this (Eclipse less so). Then when you get a feel for what is going on use the IDE's as this is more productive.