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

public class Kast extends Applet implements KeyListener, Runnable{

  int laius=300;
  int korgus=300;

  int pikkus = 20;
  int samm = 4;

  double x = laius/2;
  double y = 0;

  boolean algus=true;


  public Kast(){
    addKeyListener(this);
  }

  public void paint(Graphics g){

    g.setColor(Color.white);
    g.fillRect(0, 0, laius, korgus);

    g.setColor(Color.black);
    g.drawRect((int)x, (int)y, 10, 15);

  }

  public void run(){
     while(true){
        if ( (y+ samm+40) < korgus) {
          y += samm;
        }
       repaint();
       try{Thread.sleep(200);} catch(Exception ex){}
     }
  }

  public void keyPressed(KeyEvent e){

    if(algus){
       new Thread(this).start();
       algus=false;
    }

    int key=e.getKeyCode();

    if (key==KeyEvent.VK_LEFT && x > samm ) x -=samm;
    if (key==KeyEvent.VK_RIGHT && (x+samm+18) < laius ) x +=samm;
  }

  public void keyReleased(KeyEvent e){}

  public void keyTyped(KeyEvent e){}


  public static void main(String argumendid[]){
    Frame f=new Frame("");
    f.add(new Kast());
    f.setSize(300, 300);
    f.setVisible(true);
  }
}