https://www.infoq.com/articles/Introduction-to-HotSpot
虚拟机随谈（一）：解释器，树遍历解释器，基于栈与基于寄存器，大杂烩
http://rednaxelafx.iteye.com/blog/730461
Mirrors: Design Principles for Meta-level Facilities of Object-Oriented Programming Languages。
http://cr.openjdk.java.net/~jrose/pres/200910-VMIL.pdf
https://en.wikipedia.org/wiki/Virtual_method_table
http://www.slideshare.net/cnbailey/memory-efficient-java
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