If you get tired of typing public class... and then the main method in vim
then here is your solution. This also includes a skeleton for class documentation (author and version) that is compliant with Javadoc guidelines.

autocmd BufNewFile *.java
\ exe "normal O/**\r*\r* @author: \r* @version: \r* \r*/\r\rpublic class " . expand('%:t:r') . "\r       public static void main(String[] args){\r\r   }\r}\<Esc>1G"

Just insert it into your '.vimrc' and that's it! The next time you create a brand new Java file with 'vim *.java' you
will see a template.