Java

Today in Hibernate source code encountered native keyword, very unfamiliar, looked up a bit of information, native is what things have a little bit of understanding, and do a little remember.The native keyword indicates that its modification is a

Proxy mode is very important in Java architecture, including spring's entire large IOC system is based on proxy mode, and AOP is developed on the basis of proxy mode, which increases the timing of triggering action behavior. Therefore, mastering the

1. Algorithm AnalysisThe prizes are divided according to probabilities, each interval represents a prize, and then a random number is taken, and a counter-check falls on that interval, which is the prize drawn.2. CodeCore algorithmspublic class

Import Java.util.random;public class Randomnumber{public static void Main (string[] args) {// Generate random number System.out.println ("Math.random ():" + math.random ()) using Java.lang.Math's Random method;// Constructs a Java.util.Random object

Author: ChingOriginal address: http://blog.csdn.net/qingdujun/article/details/39312065This article demonstrates that using a socket for a network chat, the implementation of the client to the server side has been sending messages, when sending "886",

For static variables, static initialization blocks, variables, initialization blocks, constructors, theirinitialization order is (static variable, static initialization block) > (variable, initialization block) > constructor。 We can also verify this

Java.net.SocketException:recvfrom Failed:econnreset (Connection reset by Peer)11-22 14:49:16.870:warn/system.err (3581): at Libcore.io.IoBridge.maybeThrowAfterRecvfrom (iobridge.java:542)11-22 14:49:16.870:warn/system.err (3581): at

1. What are the object-oriented features?Abstraction, inheritance, encapsulation, polymorphismIs 2.String a basic data type?No.Parsing: The basic type has eight classes of basic types corresponding to the package class Basic data

* description: Demonstrates initialization and basic operation of one-dimensional arrays and multidimensional arrays * copyright:copyright (c) 2014 * Filename:myArray.java * @author w Wanghaitao * @version 0.1 */public class myarray{//Initialize

Extend the content of the introduction to Programming (Java) 3.2.6 to introduce the enumin a comprehensive way.1. Basic usageThe keyword enum introduced in Java 5, which defines the enumeration type (enumerated type).public enum direction{

The most important part of the reflection mechanism is allowing you to examine the structure of the class. The three classes in the Java.lang.reflect package field, method, and constructor describe a class's fields, methods, and constructors

Public classTestenum {/*the most common enumeration*/ Public enumcolorselect {red, green, yellow, blue; } /*enumerations can also add methods and properties like normal classes, and you can add static and non-static properties or methods to

First, Java class loading mechanism1. OverviewWhen the class file is loaded by the loader, a meta-information object describing the class structure is formed in the JVM, which can be used to learn the structure information of class, such as

InheritanceMultiple inheritance: Literally understand that subclasses can inherit multiple parent classes;Inheritance classification: Public inheritance, protection inheritance, private inheritance.Public Inheritance ( Public )The public and

Java programming ideology (15th)-reflection of type information After talking about. class and Class, continue. 1) generalized Class reference Class can also be added to the generic type, and the type check will be performed after being

Java_nio _ non-blocking communication1. Commonly Used classes that support non-blocking communication ServerSocketChannel: an alternative to ServerSocket. It supports blocking communication and non-blocking communication. socketChannel: A Socket

Redis-based MessageQueue queue Encapsulation   Redis linked List can be used as a linked List. The high concurrency feature is very suitable for Distributed Parallel message transmission.   Left, right, and out $redis->lPush($key,

Analysis on the principle of static Library Link The link to the static library is basically the same as the link to the target file.obj/.oSame, but there are some differences. This article briefly describes some details of the linux static library

Easy-to-use thread pool implementationRecently, I was writing a module of MySQL Cold Standby server. When I got a little touch on something in the thread pool, I wanted to try writing a simple thread pool trainer. When this thread pool is created,

HEAPSORT heap Sorting Algorithm (JAVA implementation)Heapsort (Heapsort) is one of the most classic sorting algorithms. You can search google or Baidu to find many detailed resolutions. The same good sorting algorithms include quicksort and merge