How to programmatically generate .class files?

Question

I would like to write a compiler for a toy-language for Java. I would like to generate runnable .class files. I was wondering what is the best library or tool available for

Answer 1

It sounds like you're looking for Apache BCEL:

The Byte Code Engineering Library (Apache Commons BCEL™) is intended to give users a convenient way to analyze, create, and manipulate (binary) Java class files (those ending with .class).