// Applet displays crisscrossing X and O
import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class DebugSeventeen3 extends Applet
{
  private int step = 3;
  private int x=10,y=10;
  private int maxX = 100, maxY = 100;
  int x2 = maxX, y2 = maxY;
  private int sleep = 20;
  int oldx,oldy;
  int oldx2,oldy2;
  public void start()
   {
     
       
   }
  public void update(Graphics gr)
  {
    paint(gr);
   }
  public void paint(Graphics gr)
  {
    gr.drawString("O",oldx, oldy);
    gr.drawString("X",oldx2, oldy2);
    gr.drawString("O",x, y);
    gr.drawString("X",x2,y2);
    oldx = x;
    oldx2 = x2;
    oldy = y;
    oldy2 = y2;
    x+step;
    y+step;
    x2-=step;
    y2-=step;
    if(x < 10 || x >90)
      {
      step = -step;
      }
    try
     {
      Thread.sleep(sleep);
      }
    catch(InteruptedException e)
    {
    
    }
    repaint();
   }
  
 }