摘要： In this example we will see how and when to use java.util.TreeMap. A TreeMap is a Map implementation which provides total ordering on its elements. Th 阅读全文

摘要： 今天看了一篇文章是将Integer的进阶用法的，拿来一块学习下 Why YOU should use Integer.valueOf(int) In particular, why you should use Integer.valueOf(int) instead of new Integer( 阅读全文

摘要： 题目 ： 有三个线程分别打印A、B、C,请用多线程编程实现，在屏幕上循环打印10次ABCABC… package my.thread.test; import java.util.concurrent.ExecutorService; import java.util.concurrent.Exec 阅读全文

摘要： As per java docs, CountDownLatch is a synchronization aid that allows one or more threads to wait until a set of operations being performed in other t 阅读全文

摘要： In SpringMVC, @ModelAttribute is used at 2 places.1. At Method level2. At Method parameter level.How @ModelAttribute at method level works? package co 阅读全文

摘要： class TrieNode { public TrieNode[] children = new TrieNode[26]; public String item = ""; // Initialize your data structure here. ... 阅读全文

摘要： What is Memory Leak?Memory leak is a bug that mainly occurs when a program does not release the memory it has obtained for temporary use. In other wor... 阅读全文

摘要： Fixed Thread PoolAn asynchronous channel group associated with a fixed thread pool of sizeN, submitsNtasks that wait on I/O or completion events from ... 阅读全文

摘要： 一.EventEncoder和EventDecoder事件编码器会收到一个事件对象（event object）然后将这个事件对象转换成为ChannelBuffer对象。编码器首先读取事件的类型并作为操作码（缓冲区的第一个字节），然后读取事件体并转换成为ChannelBuffer对象作为信息体。/**... 阅读全文

摘要： 用法一：给通道添加异步接口public void close() { LOG.debug("Going to close tcp connection in class: {}", this .getClass().getName()); ... 阅读全文