Java--socket

Refer to the online example, wrote a socket communication example, the operation can be successful

1. Create two normal Java project, directly map the following

2. The client code is as follows

Package Client;import Java.io.outputstreamwriter;import Java.io.writer;import java.net.socket;public class Client { public static void Main (String args[]) {try{//creates the client socket socket SOCKET = new Socket ("127.0.0.1", 9999);// Writes the output stream from the socket writer = new OutputStreamWriter (Socket.getoutputstream ()); Writer.write ("Hello World");// Refresh output stream Writer.flush (); Writer.close (); Socket.close ();} catch (Exception e) {e.printstacktrace ();}}}

3. Server-side code is as follows

package server;import java.io.inputstreamreader;import java.io.reader;import  java.net.serversocket;import java.net.socket;public class server {public static  Void main (string args[]) {try {//Create a serversocket to listen for client requests on port number 9999 Serversocket serversocket  = new serversocket (9999); Socket socket = serversocket.accept ();//Gets the input stream from the socket reader reader = new  InputStreamReader (Socket.getinputstream ());char chars[] = new char[1024];int len; Stringbuilder builder = new stringbuilder ();while  (Len = reader.read (chars )  != -1)  {builder.append (new string (Chars, 0, len));} System.out.println ("receive from client message=: "  + builder); Reader.close (); Socket.close (); Serversocket.close ();}  catch  (exception e)  {// todo: handle exceptione.prinTstacktrace ();}}} 

4. Run As server-side code, let the server run, and then run the client code, the results are as follows

Receive from client message=: Hello world.

Java--socket