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

public class sample3 {
    public static void main(String args[]) {
        new MyFrame("Paint");
    }
}

class MyFrame extends Frame {
    int lastX = -1, lastY = -1;
    public MyFrame(String name) {
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.exit(0);
            }
        });
        addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent me) {
                int x1 = me.getX();
                int y1 = me.getY();
                getGraphics().drawLine(x1, y1, x1, y1);
                lastX = lastY = -1;
            }

            public void mouseReleased(MouseEvent me) {
                lastX = lastY = -1;
            }
        });
        addMouseMotionListener(new MouseMotionAdapter() {
            public void mouseDragged(MouseEvent me) {
                int x1 = me.getX();
                int y1 = me.getY();
                int x2 = lastX;
                int y2 = lastY;
                if (x2 == -1) {
                    x2 = x1;
                    y2 = y1;
                }
                getGraphics().drawLine(x1, y1, x2, y2);
                lastX = x1;
                lastY = y1;
            }
        });
        setSize(new Dimension(300,200));
        setTitle(name);
        setVisible(true);
    }
}