Java tutorial
import java.applet.Applet; import java.awt.Dimension; import java.awt.Graphics; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; public class MainClass extends Applet { final int inc = 25; int max = 500; int min = 200; Dimension d; public MainClass() { addMouseListener(new MouseAdapter() { public void mouseReleased(MouseEvent me) { int w = (d.width + inc) > max ? min : (d.width + inc); int h = (d.height + inc) > max ? min : (d.height + inc); setSize(new Dimension(w, h)); } }); } public void paint(Graphics g) { d = getSize(); g.drawLine(0, 0, d.width - 1, d.height - 1); g.drawLine(0, d.height - 1, d.width - 1, 0); g.drawRect(0, 0, d.width - 1, d.height - 1); } }