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

public class Elevator extends Applet implements ActionListener
{
    private int pix=400;
    private Button up, down;

    public void init()
    {
        up = new Button("Up");
        add(up);
        up.addActionListener(this);

        down = new Button("Down");
        add(down);
        down.addActionListener(this);

    }

    public void actionPerformed(ActionEvent event)
    {
        if (event.getSource()==up)
        if(pix>90)
           pix = pix-10;
           else
            pix = pix;

        if (event.getSource()==down)
        if (pix<400)
           pix = pix+10;
        else
           pix = pix;
       repaint();
    }

    public void paint(Graphics g)
    {
        g.drawRect(60,60,60,260);
        g.drawLine(50,pix,100,pix);
        g.drawLine(50,pix-40,100,pix-40);

     if (pix==90)
       g.drawString("Highest Floor, Go down?",130,50);

    if (pix==400)
    g.drawString("Ground Floor, Go up?",130,350);
    }
}