Simple Thread example to use synchronization.

package com.test.yuvagen.basic;

/* Simple Thread example to use synchronization  

 * Read more:http://javainterviewprograms.blogspot.in/

 * */

public class SendMessageThread {

          public void sendMessage(String msg) {

                   System.out.println("sending\t" + msg);

                   try {

                             Thread.sleep(1000);

                   } catch (Exception e) {

                             e.printStackTrace();

                   }

          }

          public static void main(String args[]) {

                   SendMessageThread smT = new SendMessageThread();

                   ThreadSend th = new ThreadSend("Hi", smT);

                   ThreadSend th2 = new ThreadSend("Bye", smT);

                   th.start();

                   th2.start();

                   try {

                             th.join();

                             th2.join();

                   } catch (Exception e) {

                             e.printStackTrace();

                   }

          }

}

class ThreadSend extends Thread {

          private String str;

          private Thread th;

          SendMessageThread sm;

          ThreadSend(String msg, SendMessageThread smObj) {

                   str = msg;

                   sm = smObj;

          }

          @Override

          public void run() {

                   synchronized (sm) {

                             sm.sendMessage(str);

                   }

          }

}

Output:

sending     Hi

sending     Bye