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

public class pallike2 extends Applet implements ActionListener{
  int nr=30;
  int mitu=0;
  int x=0;
  int oota=50;
  Button kiiremini=new Button(" Kiiremini ");
  Button aeglasemalt=new Button(" Aeglasemalt ");
  Button paremale=new Button(" Paremale ");
  Button vasakule=new Button(" Vasakule ");
  public pallike2(){
    add(kiiremini);
    kiiremini.addActionListener(this);
    add(aeglasemalt);
    aeglasemalt.addActionListener(this);
    add(paremale);
    paremale.addActionListener(this);
    add(vasakule);
    vasakule.addActionListener(this);
   }
   
   public void actionPerformed(ActionEvent ev){
    x=0;
  	int a=150;
  	int b=150;
    mitu=1;
    Graphics g=this.getGraphics();
    
   	if(ev.getSource()==paremale){ 						//ring liigub paremale
    	for(int x=40; x<100; x=x+2){
    		g.setColor(Color.blue);   
      		g.drawOval(a, b, nr, nr);
			try{Thread.sleep(oota);}catch(Exception e){}
      		g.setColor(Color.white);     
      		g.drawOval(a, b, nr, nr);
      		a=a+10;
    	}		
     }
     
      	if(ev.getSource()==vasakule){ 						//ring liigub vasakule
    	for(int x=40; x<130; x=x+2){
    		g.setColor(Color.blue);   
      		g.drawOval(a, b, nr, nr);
			try{Thread.sleep(oota);}catch(Exception e){}
      		g.setColor(Color.white);     
      		g.drawOval(a, b, nr, nr);
      		a=a-10;
    	}		
     }
      	
    if(ev.getSource()==aeglasemalt){	
	  oota=oota+10;
     }
     
     if(ev.getSource()==kiiremini){						
      oota=oota-10;	
     }
   	repaint();
  }
  
  public static void main(String[] argumendid){
    Frame f=new Frame();
    f.add(new pallike2());
    f.setSize(400, 400);
	f.setBackground(Color.blue);
    f.setVisible(true);
  }
}