Synch

class Callme{
	void call(String msg){
		System.out.println("["+msg);
		try {
			Thread.sleep(1000);

		} catch (InterruptedException e) {
			// TODO: handle exception
			System.out.println("Interrupted.");
		}
		System.out.println("]");
	}
}
public 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();
	}
	@Override
	public void run() {
		target.call(msg);
		// TODO Auto-generated method stub

	}

}
class Synch
{
	public static void main(String args[]){
		Callme target=new Callme();
		Caller ob[]={
				new Caller(target, "Hellow"),
				new Caller(target, "Synchronized"),
				new Caller(target, "World")
				};
		try {
			ob[0].t.join();
			ob[1].t.join();
			ob[2].t.join();
		} catch (InterruptedException e) {
			// TODO: handle exception
			System.out.println("Interrupted.");
		}
	}
}