Java

In the Fork/join framework, there are both synchronous and asynchronous ways of submitting a task. Previously used InvokeAll () method is synchronous, that is, anyThis method does not return until all tasks have been processed. And there is another

Synchronized is the primary synchronization tag in Java1 Synchronous non-static methodScope range is only the current object synchronization between different threads, if n is a test object, between different test objects, is equal to no

JSON-type output:Import Java.util.arraylist;import java.util.hashmap;import net.sf.json.jsonarray;import net.sf.json.JSONObject; Import Org.json.*;import java.io.*; public class ceshi{Public String ceshi_ () { ArrayList lst=new ArrayList ()

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Reprint Please specify source: http://blog.csdn.net/lhy_ycu/article/details/39856435Builder mode: The factory class pattern provides a pattern for creating a single class, while the builder pattern is to centralize the various products for

/** Two ways to take out the map element*/Package com.map.test;Import Java.util.HashMap;Import Java.util.Iterator;Import Java.util.Map;Import Java.util.Set;public class Test1 {public static void Main (string[] args) {TODO auto-generated method

Reprint Please specify source: http://blog.csdn.net/lhy_ycu/article/details/39805735Appearance mode (facade): To resolve dependencies between classes and classes, like spring, you can configure the relationship between classes and classes into a

One, the development tool gets 1, the development Kit JDK:Download to the ORACLE Company official site (http://www.oracle.com/) .Download the file selection:For the Windows operating system, the file name format for the last downloaded file

Java implementation of File encoding monitoringRecently in doing a document translation project, can document the encoding do not know, listen to headache. Tried a lot of ways to finally find out jchardet this tool can easily solve this problem. So

Reprint Please specify source: http://blog.csdn.net/lhy_ycu/article/details/39828653Combined Mode (Composite): The combined mode is sometimes called part-whole mode, which combines objects into a tree structure to represent the "partial-whole"

Reprint Please specify source: http://blog.csdn.net/lhy_ycu/article/details/39807741Iterator mode (Iterator): Provides a way to sequentially access individual elements in an aggregated object without exposing their internal representations.First,

/* @author Shijin * Producer and Consumer models, the following points must be ensured: * 1 at the same time only one producer production method plus lock sychronized * 2 at the same time can only have a consumer consumer spending method plus

Java implementation of simple version SVMThe recent image classification work to use the latent SVM, in order to further understand the SVM, the implementation of a simple version of their own.The reason is simple version, because it is not

Reprint Please specify source: http://blog.csdn.net/lhy_ycu/article/details/39759199Decorator (Decorator) mode: Dynamically attaches responsibility to objects, and to extend functionality, adorners provide a more resilient alternative than

Package Observer;public class Test {/** * Client Test class * The Observer pattern is generally made up of four parts: * 1 abstract The Observer (the general textbook is called "Subject (abstract Subject Class)"), * inside the general definition of

In front of the analysis of the 2 major package classes, now we have to uncover the java.nio of the last block of mysterious knowledge points, CharSet encoding class, his main function is to achieve the conversion between byte and Unicode

How to construct in inheritance1. The constructor of the subclass must be called during the construction of its base class.2. Subclasses can use Super (argument_list) to call the constructor of the base class in their own construction method.2.1.

Algorithm analysis and verification of assembly line Scheduling Problems1 Problem description a car factory has two assembly lines, each of which has n assembly stations. The assembly station j of assembly line I is represented as Si, j, and the

Java Design Pattern cainiao series (4) Factory method pattern modeling and implementation   Factory Method) Factory method: As the name implies, it is to call methods in the factory to produce objects (products.There are three ways to implement the

Java Socket and streamZookeeper ServerSocket and Socket In the java.net package Java streams are divided into byte streams and hidden streams. The top-level abstract classes of byte streams are InputStream and OutputStream. The top-level