Decompile Java Project (one JAR file)

I need to decompile one JAR file, chage a content and repack the JAR. I have problems to decompile in Windows because the content is obfuscated and have uppercase letters and lowercase (eg: [login to view URL] and [login to view URL]). The project have the main JAR and other open source libs (dont need decompile the libs). The final result must be a project and instruction to myself be able to change the code and recompile (repack the runnable JAR file). Regards. ## Deliverables * * *This broadcast message was sent to all bidders on Friday Jul 20, 2012 5:49:56 AM: Hi, the jars files: [login to view URL] The main JAR is "[login to view URL]" The main class is [login to view URL]