actually the result
import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;

public class Steps extends Applet implements AdjustmentListener {

private Scrollbar steps;
private int count, numberOfSteps;

public void init() {
steps = new Scrollbar(Scrollbar.HORIZONTAL, 0, 1, 0, 100);
add(steps);
steps.addAdjustmentListener(this);
}
public void paint(Graphics g) {
int count = 0;


int x = 20;
int y = 20;
while (count < numberOfSteps) {
g.drawLine(x, y, x + 20, y);
g.drawLine(x + 20, y, x + 20, y + 20);

x = x + 20;
y = y + 20;
count++;
}
}

public void adjustmentValueChanged(AdjustmentEvent e) {
numberOfSteps = steps.getValue();
repaint();
}
}


how to do