A multithreaded Socket Server : ServerSocket « Network Protocol « Java

A multithreaded Socket Server

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class EchoServer {
  public static void main(String[] args) throws Exception {
    ServerSocket m_ServerSocket = new ServerSocket(12111);
    int id = 0;
    while (true) {
      Socket clientSocket = m_ServerSocket.accept();
      ClientServiceThread cliThread = new ClientServiceThread(clientSocket, id++);

class ClientServiceThread extends Thread {
  Socket clientSocket;
  int clientID = -1;
  boolean running = true;

  ClientServiceThread(Socket s, int i) {
    clientSocket = s;
    clientID = i;

  public void run() {
    System.out.println("Accepted Client : ID - " + clientID + " : Address - "
        + clientSocket.getInetAddress().getHostName());
    try {
      BufferedReader   in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
      PrintWriter   out = new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()));
      while (running) {
        String clientCommand = in.readLine();
        System.out.println("Client Says :" + clientCommand);
        if (clientCommand.equalsIgnoreCase("quit")) {
          running = false;
          System.out.print("Stopping client thread for client : " + clientID);
        } else {
    } catch (Exception e) {


Related examples in the same category

1.Data server
2.Object server
3.Compressed socket
4.String value based server
5.Get internet address from connected socket client
6.BufferedReader for ServerSocket
7.ServerSocket per Socket
8.Write number to client
9.Read and write with ServerSocket
10.Threaded Server with ServerSocket
11.Start new thread for each client
12.Get IP address from NetworkInterface and create server socket
13.Manages asynchonous HTTP GET downloads and demonstrates non-blocking I/O with SocketChannel and Selector
14.A very simple Web server. When it receives a HTTP request it sends the request back as the reply.
15.Print stream server
16.Zip server socket
17.implements a multithreaded server that listens to port 8189 and echoes back all client input.
18.This program implements a simple server that listens to port 8189 and echoes back all client input.