Eclipse将允许你查看类的字节码，如果源不可用（搜索'反汇编字节码'）。

Eclipse will allow you to view the bytecode for classes, if the source is unavailable (search for 'disassembled bytecodes').

似乎还有第三方插件使用asm 这里。

It seems there is also a third-party plugin that uses asm here.