Add tag support or JDK source codein Vim

In the root diectory of JDK source code, run the following command.

ctags -R --languages=java --exclude=com --exclude=sunw .

Only java and javax:

ctags -R --languages=java --exclude=com --exclude=sunw --exclude=sun --exclude=launcher --exclude=org .

Add the following line to .vimrc

autocmd BufRead,BufNewFile *.java setlocal tags=/home/jing/data/road/java/java-1.6.0_15/tags