摘要：
Sole purpose of using concurrency is to produce scalable and faster program. But always remember, speed comes after correctness. Your Java program mus 阅读全文
摘要：
1、使用内部类，而且它是线程安全的，而且只创建一次：/**Prof Bill Pugh, University of Maryland, was the main force behind java memorymodel changes. His principle Initialization-... 阅读全文