working multi client

Client.java

@@ -0,0 +1,47 @@
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+// Client class 
+class Client {
+
+	// driver code
+	public static void main(String[] args) {
+		// establish a connection by providing host and port
+		// number
+		try (Socket socket = new Socket("localhost", 8080)) {
+
+			// writing to server
+			PrintWriter out = new PrintWriter(
+					socket.getOutputStream(), true);
+
+			// reading from server
+			BufferedReader in = new BufferedReader(new InputStreamReader(
+					socket.getInputStream()));
+
+			// object of scanner class
+			Scanner sc = new Scanner(System.in);
+			String line = null;
+
+			while (!"exit".equalsIgnoreCase(line)) {
+
+				// reading from user
+				line = sc.nextLine();
+
+				// sending the user input to server
+				out.println(line);
+				out.flush();
+
+				// displaying server reply
+				System.out.println("Server replied "
+						+ in.readLine());
+			}
+
+			// closing the scanner object
+			sc.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+}

Server.java

@@ -0,0 +1,72 @@
+import java.io.*;
+import java.net.*;
+
+class Server {
+	public static void main(String[] args) {
+		ServerSocket server = null;
+		try {
+			// start server
+			server = new ServerSocket(8080);
+			server.setReuseAddress(true);
+
+			while (true) {
+				Socket client = server.accept();
+				System.out.println("New client: " + client.getInetAddress().getHostAddress());
+
+				ClientHandler clientSock = new ClientHandler(client);
+				new Thread(clientSock).start();
+			}
+		} catch (IOException e) {
+			e.printStackTrace();
+		} finally {
+			if (server != null) {
+				try {
+					server.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+	private static class ClientHandler implements Runnable {
+
+		private Socket clientSocket;
+
+		public ClientHandler(Socket socket) {
+			this.clientSocket = socket;
+		}
+
+		public void run() {
+			PrintWriter out = null;
+			BufferedReader in = null;
+			try {
+				out = new PrintWriter(clientSocket.getOutputStream(), true);
+				in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+
+				String line;
+				while ((line = in.readLine()) != null) {
+					System.out.printf("From the client: %s\n", line);
+					out.println(line);
+
+				}
+			} catch (IOException e) {
+				e.printStackTrace();
+			} finally {
+				try {
+					if (out != null) {
+						out.close();
+					}
+					if (in != null) {
+						in.close();
+						System.out.println("closing socket " + clientSocket.getInetAddress().getHostAddress());
+						clientSocket.close();
+					}
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+}