Painter Class: Drawing with the Mouse in Java

Class Painter can be used to create small programs that make up the line with the mouse (when the mouse-drag).

Here's how it looks:

import java.awt .*;
import java.awt.event .*;
import javax.swing .*;
public class Painter extends JFrame {
    private int pointCount = 0;
    private Point points [] = new Point [1000];

    public Painter () {
        super ("simple drawing program");

        getContentPane (). add (new JLabel ("Drag the mouse to draw"), BorderLayout.SOUTH);

        addMouseMotionListener (
            MouseMotionAdapter new () {
                public void mouseDragged (MouseEvent e) {
                    if (pointCount
                        points [pointCount] = e.getPoint ();
                        + + PointCount;
                        repaint ();
                    }
                }
            } / / End of anonymous class
        ); / / End method addMotionListener

        setSize (300.150);
        setLocationRelativeTo (null);
        setVisible (true);
    }

    public void paint (Graphics g) {
        super.paint (g);
        for (int i = 0; i
            g.setColor (Color.red);
            g.fillOval (points [i]. x, points [i]. y, 4.4);
        }
    }

    public static void main (String args []) {
    Painter test = new Painter ();
    test.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
    } }
Hopefully helpful