java websocket example

Differences between =, equals, and hashcode in Java and the example of rewriting the equals and hashcode methods, using shashcode 1. Override the equals Method Instance part of the code reference http://blog.csdn.net/wangloveall/article/details/7899948 The purpose of rewriting the equals method is to determine whether the content of the two objects is the same (the content can contain many objects, such as

Read the previous article to understand the principles of Google oauth 2.0 at http://blog.csdn.net/totogogo/article/details/6860966. Note that all the codes in the above article do not use the Google client library code. This article describes oauth 2.0 simple example using Google Java client library. This article English Reference document: http://code.google.com/p/google-api-

Brief introduction:All the time I've been using code to write graphical interfaces I've never done before, (-?-;), but have chosen to open this road, I think everything is going to be a bit, so maybe it might be a lot easier to re-write things after many months. Moreover, if you forget it later, you can also look at it here, by the way Gao's own literary ability. Forgive me to hit the word more ugly understand, these are more or less exist their own emotions written out, see the text good.Read a

Simple Example of accessing Java classes from Python programs, pythonjava from jnius import autoclass>>> Stack = autoclass('java.util.Stack')>>> stack = Stack()>>> stack.push('hello')>>> stack.push('world')>>> stack.pop()'world'>>> stack.pop()'hello' In the above Code, we use the autoclass function to create a type proxy, which corresponds to all the methods and field attributes of the

Interview questions-java Design Pattern Example 1, adapter modeInvolves three roles: Target destination interface, Adaptee source role, adapter adapter,adapter The source interface to the target interface, inherits the source interface, and implements the target interface .Many examples of Java I/O operations are:InputStreamReader the inputstream to reader; you n

Java generic code exampleJava generic code example A piece of code is better than a thousand words Package com.apk kids. javalanguage; import java. util. arrayList; import java. util. list;/*** @ author wxb * Java generic example

Java string cutting example When dealing with Path-related issues in Java, for example, to retrieve the file name uploaded by ie browser, because ie will upload the entire file path as a file name, you need to use java. lang. replaceAll or split in String to process the da

, 10); } public static void Main (string[] args) { Test (New Evengenerator ()); } } Analysis: If the class that produces even numbers is not synchronized, then the test program will appear odd to cause the program to exit. 2, volatile indicates atomicity, visibility.For variables shared between multiple threads, each thread has its own copy, and when thread 1 changes the value of the variable, other threads do not immediately know that the variable value has changed, and volati

the time, thread, category, and so on that the log produced) Log4j.appender.a.layout=Org.apache.log4j.SimpleLayoutlog4j.appender.logfile=org.apache.log4j.fileappender# The address of the settings file Log4j.appender.logfile.File=Mylog.loglog4j.appender.logfile.layout=org.apache.log4j.patternlayout# sets the style for patternlayout. #%the message specified in the M output code #%P-Output priority, i.e. Debug,info,warn,error,fatal #%r output The number of milliseconds to output the log informatio

Java Spring Loose coupling The object-oriented concept is a good design to break the system into a group of reusable objects. However, when the system becomes larger, especially in Java projects, large object dependencies will always be tightly coupled to cause the object to be difficult to manage or modify. In this case, you can use the Spring framework as a core module to manage all object dependencies e

Single-Example pattern concept: The single case pattern in Java is a common design pattern, the single example mode is divided into three kinds: the lazy type single case, the A Hungry man type single case, the registration type single example three kinds. A single case pattern has some features: 1, Singleton class

JAVA simple Swing graphical interface application example JAVA simple Swing graphical interface application example Package org. rui. hello; import javax. swing. JFrame;/*** simple swing window * @ author lenovo **/public class HelloSwing {public static void main (String [] args) {JFrame frame = new JFrame ("hello S

Java basics-a simple example of JDOM operations-general Linux technology-Linux programming and kernel information. The following is a detailed description. The openness of JAVA attracts many companies and individuals to constantly improve JAVA's performance. JDOM is the creation result of two famous Java developers and

To implement dynamic proxy through JDK, classes with proxy requirements (called implementation classes) must implement interfaces. The dynamic proxy can segment the logic and implement the logic through the proxy generation. Other operations can be performed during this period. JDK's dynamic proxy mainly involves two classes in the Java. Lang. Reflect package: proxy and invocationhandler. Invocationhandler is an interface that defines the cross-cuttin

Java is a kind of object-oriented programming language that can compose Cross-platform application software. Java technology, with its superior versatility, efficiency, platform portability and security, is widely used in PCs, data centers, gaming consoles, science supercomputers, mobile phones and the Internet, and has the world's largest developer professional community. public void Serve () throws Inter

Java SPI mechanism and simple example, callback PI Mechanism I. SPIMechanism Here we will first describe the concept of SPI. In English, a single SPI Service Provider Interface can be literally understood as a Service Provider Interface, just as a Service Provider Interface can be understood from the SPI name; my SPI definition: interfaces used by developers who provide services with vendor and extended fra

maintain a list of which memory blocks are available, and at the time of allocation, find a large enough space in the list to be partitioned to the object instance and update the records on the list. In addition to how to divide the available space, there is another issue to consider, object creation is very frequent behavior, in the concurrency of the thread there is a security problem,Two solutions: 1. Synchronizing actions for allocating memory space2. The actions of the memory allocation ar

Typical Example of Java thread learning-reader demonstration Typical Example of Java thread learning-reader demonstration The most typical example of Java Thread learning-the reader, mainly uses the Thread knowledge as follows: -T

Java Thread join example and Explanation The Java Thread join method is used to pause the current Thread until the end of the join operation. Java has three overloaded join methods: Public final void join (): This method changes the current thread to wait until the end of the thread that executes the join operation.

Grouping threads is an interesting feature provided by the Java Concurrency API. We can look at a set of threads as a self-contained unit, and we can manipulate the thread objects in the thread group at will. For example, you can control a set of threads to run the same task without caring how many are still running, and you can use an interrupt call to interrupt the execution of all threads.