ServerThread.java

package multiThread;

import java.io.*;
import java.net.*;


public class ServerThread extends Thread {
    private Socket socket;

    public ServerThread(Socket socket) {
        this.socket = socket;
    }

    public void run() {
        try {
            InputStream input = socket.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(input));
            OutputStream output = socket.getOutputStream();
            PrintWriter writer = new PrintWriter(output, true);
            String text;
            do {
                text = reader.readLine();
                String reverseText = new StringBuilder(text).reverse().toString();
                writer.println("Server: " + reverseText);
            } while (!text.equals("bye"));
            socket.close();
            System.out.println("ok");
        } catch (IOException ex) {
            System.out.println("Server exception: " + ex.getMessage());
            ex.printStackTrace();
        }
    }
}