import java.awt.*;
import java.awt.event.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
	public class neljandale2 extends Frame implements Runnable{
		neljas foor=new neljas();
		neljas foor2=new neljas();
		Frame aken=new Frame();
		boolean veel=true;

			public neljandale2(){		
			aken.setSize(300, 200);
			aken.setTitle("foorid");
			Panel paneel=new Panel(new GridLayout(1, 2));
			paneel.add(foor);
	   	paneel.add(foor2);
	   	aken.add(paneel);
   		aken.addWindowListener(new aknakuular());    
   		aken.setVisible(true);
		   new Thread(this).start();
		   }
	   public void run(){
	   	while(veel==true){
		   	foor.varvid(Color.red,Color.white,Color.white);
			   foor2.varvid(Color.white,Color.white,Color.green);
			  	try{Thread.sleep(1000);}catch(Exception e){}
				foor.varvid(Color.white,Color.yellow,Color.white);
			   foor2.varvid(Color.white,Color.yellow,Color.white);
			  	try{Thread.sleep(1000);}catch(Exception e){}
 				foor.varvid(Color.white,Color.white,Color.green);
			   foor2.varvid(Color.red,Color.white,Color.white);
			  	try{Thread.sleep(1000);}catch(Exception e){}
				foor.varvid(Color.white,Color.yellow,Color.white);
			   foor2.varvid(Color.white,Color.yellow,Color.white);
			  	try{Thread.sleep(1000);}catch(Exception e){}

			}
		}
    public static void main(String argumendid[]){
    new neljandale2();
  	 }

	}

class aknakuular extends WindowAdapter{
   public void windowClosing(WindowEvent e){
   System.exit(0);
   }
}