import java.io.*;

public class MethodTest {
    static PrintWriter out = new PrintWriter(System.out, true);
    public static void main (String args[]) {
	FirstThread first = new FirstThread();
	SecondThread second = new SecondThread();
	first.start();
	second.start();
	try {
	    out.println("Waiting for first thread to finish...");
	    first.join();
	    out.println("It's a long wait !!");
	    out.println("Waking up second thread ...");
	    synchronized(second) {
	      second.notify();
	    }
	    
	    out.println("Waiting for second thread to finish ...");
	    second.join();
	} catch (InterruptedException e) {}
	out.println("I'm ready to finish too.");
    }
}

class FirstThread extends Thread {
    public void run () {
	try {
	    MethodTest.out.println("  First thread starts running.");
	    sleep(10000);
	    MethodTest.out.println("  First thread finishes running.");
	} catch (InterruptedException e) {}
    }
}

class SecondThread extends Thread {
    public synchronized void run () {
	try {
	    MethodTest.out.println("  Second thread starts running.");
	    MethodTest.out.println("  Second thread suspends itself.");
	    wait();
	    MethodTest.out.println("  Second thread runs again and finishes.");
	}catch (InterruptedException e) {}
    }
}