Unskilled Coder

Based on different senarios, we are often struggling choosing among different map implementations, like HashMap, HashTable & ConcurrentHashMap. Unlike other articles, I will not show up detail code here, but explain the principle and conceptions. And I highly recommend here you should at least look into the source code yourself...

This post generally is to explain what JVM is & how it works. I’m here to record my understandings of this mistery black box and share them with you. 1. Introduction As we all know JVM is the abbreviation of Java Virtual Machine, which is the cornerstone of the Java...