vim and java source code browsing

[Khubaib]

Hello,
I wanted to know how can I efficiently browse java source code in VIM? That is 
to say that I should be able to jump to class and methods definition etc. I 
tried using ctags, but could not use it to produce tags for java source. The 
code is distributed across multiple source directories in a hierarchy. I have 
heard about jtags, but I was not able to install that on my home directory. any 
hints?
-Khubaib