https://www.infoq.com/articles/Introduction-to-HotSpot
http://www.sczyh30.com/posts/Java/jvm-klass-oop/
http://www.th7.cn/Program/java/201607/918500.shtml
http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/file/5b9a416a5632/src/share/vm/oops/klassOop.hpp
http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/file/5b9a416a5632/src/share/vm/oops
https://yq.aliyun.com/articles/20279
原文：http://www.cnblogs.com/WCFGROUP/p/6337526.html