import java.awt.event.*;
import java.awt.*;
class circle1 extends Frame implements KeyListener
{

  public int a=300;    
  public int b=70;
  public int pacx=360;
  public int pacy=270;

  public circle1()
  {
    setTitle("circle");
    addKeyListener(this);
    repaint();
  }
  public void paint(Graphics g)
  {
    g.fillArc (a, b, 60, 60,pacx,pacy); 
  }
  public void keyPressed(KeyEvent e)
  {
    int key=e.getKeyCode();
    System.out.println(key);
    if(key==38)
    {
      b=b-5;                                                         //move pacman up
      pacx=135;pacy=270;                                 //packman mouth upside
      if(b==75&&a>=20||b==75&&a<=945)
      {
        b=b+5;
      }
      else
      {
        repaint();
      }
    }
    else if(key==40)
    {
      b=b+5;                               //move pacman downside
      pacx=315; pacy=270;                  //packman mouth down
      if(b==645&&a>=20||b==645&&a<=940) 
      {
        b=b-5;
      }
      else{       
       repaint();
      }
    }
    else if(key==37)
    {
      a=a-5;                                                   //move pacman leftside
      pacx=227; pacy=270;                          //packman mouth left
      if(a==15&&b>=75||a==15&&b<=640)
      { 
        a=a+5;
      }
     else
     {
       repaint();
     }
   }
   else if(key==39)
    {
      a=a+5;                                   //move pacman rightside
      pacx=42;pacy=270;                                     //packman mouth right
      if(a==945&&a>=80||a==945&&b<=640)
      {
        a=a-5;
      }
      else
      {
         repaint();
      }  
   }
  }

  public void keyReleased(KeyEvent e){}
  public void keyTyped(KeyEvent e){}

  public static void main(String args[])
  {
    circle1 c=new circle1();
    c.setVisible(true);
    c.setSize(400,400);
  }
}