Java

Java Nio   1 Java NIO Tutorial 2 Java NIO Overview 3 Java NIO Channel 4 Java NIO Buffer 5 java NIO scatter/gather 6 Java NIO

1. Determine if there is a exists keyword or "??" Operator. will return a Boolean valueUser.name?existsUser.Name?? if user.name?exists>   //TO DO if >   if user.age??>   //TO DO if > 　　 2. Ignore null

Given a sorted linked list, delete all duplicates such this each element appear only once.For example,Given 1->1->2 , return 1->2 .Given 1->1->2->3->3 , return 1->2->3 .The idea is very simple, because the good sort, is to judge the next is not

Static indicates that main () can still run without creating a class object. Java programs are made up of classes. The file name of the original program cannot be arbitrarily named, it must be the same as the public class name, so in a separate

This article is a summary of the study on the web and its own little practice, thank you for your selfless sharing.Recently, when I read a book on the basics of Java, I encountered an introduction to enumerations. Some information on the Internet,

The HTTP protocol (http://www.w3.org/Protocols/) is a "one-way" protocol.The server cannot actively connect to the client and can only passively wait and reply to the client request. The client connects to the server, issues an HTTP request, the

This article is based on the previous article Springmvc, plus spring. The main purpose of spring is called inversion of control (dependency injection, Ioc/di) and aspect-oriented programming (AOP), this article only introduces IoC, because the main

One: Causes:(1) In reality, it is necessary to sort the map container in many cases: because the storage structure of the Map key-value pair is very excellent, especially the HASHMAP structure, the data storage will inevitably be sorted;(2) Data

This article is your own study notes, welcome reprint, but please indicate the source: http://blog.csdn.net/jesson20121020 You can use icon in jlable or any component that inherits from AbstractButton. You can use any GIF file you want, to open

First, interview question 1: copy operator function (P24)Title: The following is a declaration of type cmstring, please add an assignment operator function for that type.Class cmystring { public: cmystring (char* pData = NULL);　　CMyString (const

1. Type default valueThe default value of the object is null. The default value of Boolean is false. The default value for char is ' \u0000 ' (null).The default value of byte (byte) 0. Short default value (short) 0. The int default value is 0. The

Java multithreaded design mode wait and notify mechanism summary: The wait and notify methods must be written in the synchronized method, that is, before calling the wait and notify methods, you need to obtain the object lock; call the

Locks in Java Locks, like synchronized synchronous blocks, are a thread synchronization mechanism, but more complex than the synchronized synchronization blocks in Java. Because locks (and other more advanced thread synchronization mechanisms) are

Before reading this article, please read the Simple factory model and the factory method pattern in (i) and (ii).1Introduction to Abstract Factory modeAbstract Factory (Abstract Factroy) Mode: Toolbox Mode ( Kit ). Abstract Factory mode is one of

Uva10862-connect the Cable Wires (recursive + large number of Java)Topic links main topic: give you n house in a straight line, and then only give you a cable service, ask each house is connected to wired, the way can be indirect through the House

Implementation of adding two time points (00:00:00) TimeList = {"00:20:00", "00:23:43 "}; Public static String getTotal (String [] timeList ){String timeString = null; Int hour = 0; Int min = 0; Int sec = 0; For (int I = 0; I TimeString = timeList

Algorithm Analysis of variable sequence in topological sorting Variable Sequence in topological sorting Clever if (Welcome to reprint, but please note the Source: http://blog.csdn.net/qiaoruozhuo) Description: Assume that there are n variables (1

Variable Sequence Code of topological sorting/*Name:Copyright:Author:Date: 17-11-14Description: variable sequence of topological sortingAssume that there are n variables (1 For example, there are four variables a, B, c, d. Input The input is

Java SE learning enumeration Summary This article is a summary of the articles on the Internet and some of my own practices. Thank you for your selfless sharing. I recently encountered an enumeration introduction when I was reading books on Java

Spring basics-01, spring-01 IOC: inversion, DI: dependency injection refers to injecting the called instance into the caller. AOP is a reflection of the proxy mode. Spring uses JDK's dynamic proxy by default, mainly the proxy interface. If the