import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;


public class Pallid1 extends Applet implements ActionListener, Runnable{
public int punane=10, roheline=10, sinine=10;
 Pall2 pall3, pall5, pall6, pall7;
  Image pilt;
 TextField tf1=new TextField("10");
 Label silt=new Label("Sujuvus (0-100)");

 public int kiirus=10;
 public Pallid1(){
	add (silt);
 	add (tf1);
	tf1.addActionListener(this);
   pall3=new Pall2();
   pall5=new Pall2();
   pall6=new Pall2();
	pall7=new Pall2();
   new Thread(this).start();
 }
 public void joonista(){
   if(pilt==null) pilt=createImage(300, 300);
    if(pilt!=null){
    Graphics piltg=pilt.getGraphics();
    piltg.setColor(Color.white);
    piltg.fillRect(0, 0, 300, 300);
    piltg.setColor(Color.green);
        punane= (int)(250*Math.random());
        sinine=(int)(250*Math.random());
        roheline=(int)(250*Math.random());
          piltg.fillOval(pall3.x()-10, pall3.y()-10, 10, 10);
		    piltg.fillOval(pall5.x()-10, pall5.y()-10, 10, 10);
		    piltg.fillOval(pall6.x()-10, pall6.y()-10, 10, 10);
			 piltg.fillOval(pall7.x()-10, pall7.y()-10, 10, 10);
	          piltg.setColor(new Color(punane,sinine,roheline));
             piltg.drawLine(pall3.x()-5, pall3.y()-5, pall5.x()-5, pall5.y()-5);
             piltg.drawLine(pall5.x()-5, pall5.y()-5, pall7.x()-5, pall7.y()-5);
             piltg.drawLine(pall7.x()-5, pall7.y()-5, pall6.x()-5, pall6.y()-5);
	  		     piltg.drawLine(pall6.x()-5, pall6.y()-5, pall3.x()-5, pall3.y()-5);
     this.getGraphics().drawImage(pilt, 0, 0, this);
  }
 }
 public void run(){
   while(true){
     joonista();
     try{Thread.sleep(kiirus);}catch(Exception e){}
   }
 }
 public void actionPerformed(ActionEvent e){
            kiirus=Integer.parseInt(tf1.getText());
            if ((kiirus<0)|(kiirus>100)){
            kiirus=10;
            tf1.setText("10");
            }
            }
 public static void main(String argumendid[]){
   Frame f=new Frame("Pallid");
   f.add(new Pallid1());
   f.setSize(300, 320);
   f.setVisible(true);
   f.addWindowListener(new Raamikuular());
 }
}

class Pall2 extends Thread{
  double x=100, y=100, dx, dy;
  int vasak=10, ulal=10, parem=290, all=290;
  public Pall2(){
    dx=5*Math.random();
    dy=5*Math.random();
    start();
  }
  public int x(){
    return (int)x;                                
  }
  public int y(){
    return (int)y;                            
  }
  public void run(){
    while(true){
      if(x>parem)dx=-Math.abs(dx);
      if(y>all)dy=-Math.abs(dy);
      if(x<vasak)dx=Math.abs(dx);
      if(y<ulal)dy=Math.abs(dy);
      x+=dx;                                      
      y+=dy;
      try{Thread.sleep(10);}catch(Exception e){}
    }
  }
}

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