// demonstrating the use of the barrier class

//  Requires barrier.java and plaingui.java.

class TA implements Runnable
{
    barrier BR;
    plaingui gui = new plaingui(0,0,260,340); // makes gui window

    public TA(barrier i) {BR=i;}

    public void run()
    {
	try
	    {
		Thread.sleep(1000);
		gui.outputarea.append("TA waiting on barrier\n");
		BR.block();
		gui.outputarea.append("TA has been released\n");
	    }
	catch (InterruptedException ie) {System.out.println(ie);}
    }
} //TA

class TB implements Runnable
{
    barrier BR;
    plaingui gui = new plaingui(280,0,260,340);
    public TB(barrier i) {BR=i;}

    public void run()
    {
	try
	    {
		Thread.sleep(3000);
		gui.outputarea.append("TB releasing blocked threads\n");
		BR.release();
		gui.outputarea.append("TB releasing blocked threads\n");
	    }
	catch (InterruptedException ie) {System.out.println(ie);}
    }
} //TA


public class usebarrier
{
    public static void main(String[] args) throws InterruptedException
    {
	barrier BR = new barrier();
	Thread t1 = new Thread(new TA(BR));
	Thread t2 = new Thread(new TB(BR));
	t1.start();  t2.start();
	t1.join();   t2.join();
    }
}