How to vim a class file in a jar file with the java decompiler executed?

[ERIC HO]

Hi there, in tip 1259, I can edit a java jar file by putting the jar.vim in 
ftdectect directory:
au BufReadCmd   *.jar,*.war,*.ear,*.sar,*.rar        call 
zip#Browse(expand("<amatch>")) 
That's good. But is there a way that when I select a class file from a jar 
file, it will execute the java decompiler like jad? When I vim a class file by 
itself, it executes the decompiler and gives me the souce code for the class 
file. Thanks!