http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.4
http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-5.html
http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-2.html#jvms-2.5.5
The Run-Time Constant Pool The Constant Pool
原文：http://www.cnblogs.com/WCFGROUP/p/6110689.html