Class Painter: Menggambar dengan Mouse di Java

Class Painter dapat digunakan untuk membuat program kecil yang membentuk garis dengan mouse (saat mouse di-drag).

Berikut ini tampilannya:

Berikut ini program lengkapnya:

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 ("Program menggambar sederhana");

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

addMouseMotionListener (

new MouseMotionAdapter() {

public void mouseDragged (MouseEvent e) {

if (pointCount < points.length) { 
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 < points.length && points[i] != null; 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); 
 } 
 }

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