jvm内存分析

http://www.cnblogs.com/ITtangtang/p/3948786.html  线程池

http://essen.iteye.com/blog/1825314
用Eclipse Memory Analyzer查找内存泄露

http://www.cnblogs.com/ITtangtang/p/3948786.html
Java集合---ConcurrentHashMap原理分析