chat messenger in java source code

time of the task. Let's look at the source code: Package Nov; import Java. util. date; import Java. util. timer; import Java. util. timertask;/***** Execution result: The execution time of this task is Thu Nov 29 10:39:38 CST 2012. The execution time of this task is Th

public class Computesourceline {public static void main (string[] args) throws FileNotFoundException {//TODO auto-generate D method stub//defines the relevant variable int totalline = 0;int Emptyline = 0;int Commentline = 0;int CodeLine = 0;//We all focus on the scanner class (network search) and The use of the string class (textbook P75 and the Network)//path to the file string strfilename;//using the command line, if there is a command line argument, the file name is obtained from the outside

in the interface.Map is a mapping interface in which each element is a Key-value key-value pair. The same abstract class Abstractmap implements most of the functions in the map interface through the adapter pattern. TreeMap, HashMap, Weakhashmap and other implementation classes are implemented through inheritance Abstractmap. Other than that. The infrequently used Hashtable directly implements the map interface, and the vector is the collection class introduced by JDK1.0.iterator is an iterator

650) this.width=650; "style=" white-space:normal; "src=" http://gd2.alicdn.com/imgextra/i2/332189337/ tb2j08bbfxxxxx9xxxxxxxxxxxx_!! 332189337.png "alt=" tb2j08bbfxxxxx9xxxxxxxxxxxx_!! 332189337. "/>650) this.width=650; "style=" Margin:0px;padding:0px;width:30px;float:none; "src=" http://a.tbcdn.cn/sys/ Wangwang/smiley/48x48/92.gif "/> Development Express: New Instant Messaging capabilities (Java WebSocket communication technology ) below---------

Hongye Qingcheng one-click webpage game server + client (no need to install Java) source code, no need to install java Qingcheng's one-click installation version server (including the client), without the need to install Java, you can directly start the server to enter the

the superclass, and the current class inherits from the superclass. To do this, the expressionSuper.scrub ()Will call the base class version of theScrub ()Method. In the process of inheritance, you do not necessarily have to use the method of the base class. You can also add a new method to the export class, which is added in the same way that you add any method to the class, defining it. The foam () method is one example. Readers inDetergent.main ()Will find that for adetergentObject, in add

Java. util. concurrent package source code reading 04 ConcurrentMap, java. util package The Map data structure in the Java Collection framework is non-thread-safe. Manual thread synchronization is required for use in a multi-threaded environment. Therefore, the

Java concurrency series [6] ---- Semaphore source code analysis, java ---- semaphore Semaphore is a common class in the JUC package. It is an application in the AQS sharing mode and allows multiple threads to operate on shared resources at the same time, in addition, it can effectively control the number of concurrent

Java-linked list source code principle analysis, and build a queue through the consumer list, java-linked list Here we will introduce the simplest linked list listing; Let's take a look at the add () method: public boolean add(E e) { linkLast(e); return true; } void linkLast(E e) { final Node Th

technologies, there is no need to download plugins or small programs.Ajax has a lot of merit, and it is these strengths that reflect its shortcomings (of course, the shortcomings can be overcome).Disadvantages:1. Security issues2. Support for search engines is relatively weak.3. The exception handling mechanism of the program is broken.4. The original intention of URL and resource location is violated.Actual combata simple, but useful example: TheJava version asynchronously verifies that userna

Today to introduce you about how to implement Notepad in Java, is a very good case of learning Java Swing, the following first look at the results of the operation (download the address below): Here we look at the source code: [java] View Plain copy importjava.awt.*; impor

Java recommended readings and source code readingJiangsu Wuxi Miuxiaodong1. Java Language BasicsWhen it comes to basic Java language Learning books, you will definitely recommend Bruce Eckel's "Thinking in Java". It is a very prof

); */bufferedimage image = null;try {image = Imageio.read (new File ("e:/i") Mage/mldn text 01.jpg "));} catch (IOException e) {//TODO auto-generated catch Blocke.printstacktrace ();} G.drawimage (Image,0,0,this), G.drawoval ((), G.setcolor (Color.Blue), G.fillrect (+--), G.setfont ( New Font ("Arial", 40,40)); g.DrawString ("Gobang game", 20, 100);} public void mouseclicked (MouseEvent arg0) {//TODO auto-generated method stub}public void mouseentered (MouseEvent arg0) {/ /Todo auto-generated m

(Line.endswith ("*/")) {comment = false; }} else if (Line.startswith ("//")) {commentlines++; } else {normallines++; }}} catch (IOException e) {e.printstacktrace (); }} catch (FileNotFoundException e) {e.printstacktrace (); } finally {if (BR! = null) {try {System.out.println ("blank line number : "+whitelines); System.out. println ("Number of comment lines:" +commentlines);

Java. util. concurrent package source code reading 05 BlockingQueue, java. util package Everyone must be familiar with the producer-consumer queue. The producer is responsible for adding elements to the queue. If the queue is full, it will be blocked until a consumer takes the elements away. On the contrary, the consum

It seems that the weather in Xi'an is difficult to get better, and the continuous moderate pollution is suffocating. No nonsense. This morning I wrote a Java mail sending service class. Let's look at the source code: Package Dec; import Java. util. properties; import javax. mail. message; import javax. mail. messaging

Based on the analysis in the previous article "Introduction to Real Data Encryption Using DES (analysis)", Java can be used to encrypt strings, however, the legacy problem is that the string cannot be decrypted, because after the encrypted byte array is converted into a string, it will be different from the original byte array, and there will be fewer digits, I don't know why. Isn't a one-to-one conversion between a non-byte array and a string? Confus

Java. util. concurrent package source code reading 20 DelayQueue, java. util package DelayQueue stores Delayed objects or child objects in an orderly manner. If an element is not removed from the queue, the object is returned only after the delay is exhausted. The so-called Delayed type inherits the Comparable interfac

Interpretation of source code based on Annotation configuration Bean Definition The first part of this series analyzes the source code of the Annotation-based Bean parsing portal As shown in Figure 2 above, the last Loop sequence diagram in the lower-right corner is the entry for the parse Bean for the Annotation c

Reprint light indicated Source: http://blog.csdn.net/ns_code/article/details/35564663 The Java Collection toolkit is located under the Java. util package and contains many common data structures, such as arrays, linked lists, stacks, queues, sets, and hash tables. The Java Collection framework can be divided into the