how to use DEXtoJar

Question

I find the solution to decompile a file dex to jar from this link http://code.google.com/p/dex2jar/downloads/list but i don\'t understand how to use it.

Answer 1

Step 1 extract the contents of dex2jar.*.*.zip file 
Step 2 copy your .dex file to the extracted directory
Step 3 execute dex2jar.bat <.dex filename> on windows, or ./dex2jar.sh <.dex filename> on linux