ThreadDemo5.java

package Multi_Threading;
class Callme
{
	void call(String msg)
	{
		System.out.print("["+msg);
		try {
			Thread.sleep(1000);
		}catch(InterruptedException e) {}
		System.out.println("]");
	}
}
class Caller implements Runnable
{
	String msg;
	Callme target;
	Thread t;
	public Caller (Callme targ,String s)
	{
		target = targ;
		msg = s;
		t = new Thread(this);
		t.start();
	}
	public void run()
	{
		synchronized(target) {
			target.call(msg);
		}
		
	}
}

public class ThreadDemo5 {

	public static void main(String[] args) {
		Callme target = new Callme();
		Caller ob1 = new Caller(target,"Hello");
		Caller ob2 = new Caller(target,"synchronized");
		Caller ob3 = new Caller(target,"World");

		try
		{
			ob1.t.join();
			ob2.t.join();
			ob3.t.join();
		}catch(InterruptedException e) {}
		
	}

}