1.学习了解GC垃圾回收
参考:https://www.ibm.com/developerworks/cn/java/l-JavaMemoryLeak2/
2.类加载机制
http://blog.csdn.net/gjanyanlig/article/details/6818655/
3.
http://www.importnew.com/22056.html#comment-540790
原文:http://www.cnblogs.com/dorothychai/p/6402386.html