https://mp.weixin.qq.com/s?__biz=MzIwMzY1OTU1NQ==&mid=2247485439&idx=1&sn=c5081faa273439ebfb3880452ec3fdf7&chksm=96cd47b3a1bacea59a8dbc8faebc3438eba1ad97fa9f8d9c6b9482ef3c0464d17fd2eb5d7952&mpshare=1&scene=1&srcid=0129rxD8sB063gG2r4aQyAx6&key=d1dd5c9a0a50c21a3dff8c29454318312d47c705752248324a8dedfbcaa7d24db80ace072cedb6bb5baea76eb507422699476b94de72729d547ae3ea67690eb872c4fe1bb84bafe016223e795a3990d8&ascene=0&uin=MTA2NzUxMDAyNQ%3D%3D&devicetype=iMac+MacBookAir6%2C2+OSX+OSX+10.10.5+build(14F2511)&version=11020012&lang=zh_CN&pass_ticket=sv4l%2BGEe3jDMSGyGy8HbXOjLuiqF00ftuchHsiP4ANQLuOaLo%2FLBiGBEJRndwZZ5
字节码，好用的 IDEA 插件，叫做 jclasslib bytecode viewer。
开源的工具，叫做 jitwatch，它可以查看查看分析HotSpot JIT compiler 生成的汇编代码
jar 反编译 jd－gui