Have a Bite of Bytecode!!

This topic is very different from other Java topics.  I am sure a lot of developer think that why should I learn about byte code at all. Well I can give only two reasons of that(1)    Either you are a Byte code engineer for example using a library like BCEL which is used to change/enhance byte code generated by Java compiler. (2)    You are passionate to learn thing under the hood (Under the hood