It looks like after this code was compiled, a "bytecode obfuscator" was applied to it. This is a tool that specifically tries to make it difficult to decompile the code. Based on this, I'll assume that it's not your code, but in fact you're trying to reverse-engineer a commercial product. You won't get any help with this here.
If you're in the USA, be aware that you might be violating the DMCA law.
Its really embarrassing to post this after six years. But.. this post seems such a blot. it may be stupid but I feel the need to clarify it before posting else where.
It is not stolen code but a jar which my client had made, and lost the source code of. It's a (the?) BIG bank in the US , and at the time working for my employer, and the bank, i did not want to say this.
We were supposed to revamp the old application which was made so long ago that the only resource they had of it was the jar from the 90's deployed in the prod. That was what I had to re-engineer and fix.
Dug out some even older code from the Clearcase to see what was going on and re-assessed the requirements, functionality and design. Few weeks later the new app was up and running