Java Tutorial/2D Graphics/Graphics

Demonstrate XOR mode.

   <source lang="java">

import java.awt.Color; import java.awt.Graphics; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionAdapter; import javax.swing.JFrame; public class XORModePaintWithMouse extends JFrame {

 int chsX = 100, chsY = 100;
 public static void main(String[] a) {
   XORModePaintWithMouse f = new XORModePaintWithMouse();
   f.setSize(300, 300);
   f.setVisible(true);
 }
 XORModePaintWithMouse() {
   addMouseMotionListener(new MouseMotionAdapter() {
     public void mouseMoved(MouseEvent me) {
       int x = me.getX();
       int y = me.getY();
       chsX = x - 10;
       chsY = y - 10;
       repaint();
     }
   });
 }
 public void paint(Graphics g) {
   g.drawLine(0, 0, 100, 100);
   g.drawLine(0, 100, 100, 0);
   g.setColor(Color.blue);
   g.drawLine(40, 25, 250, 180);
   g.drawLine(75, 90, 400, 400);
   g.setColor(Color.green);

   // xor cross hairs
   g.setXORMode(Color.black);
   g.drawLine(chsX - 10, chsY, chsX + 10, chsY);
   g.drawLine(chsX, chsY - 10, chsX, chsY + 10);
   g.setPaintMode();
 }

}</source>

Draw 2D shape

   <source lang="java">

import java.awt.Canvas; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Shape; import java.awt.geom.Ellipse2D; import java.awt.geom.GeneralPath; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; import javax.swing.JFrame; public class Draw2DObjects extends JFrame {

 Shape shapes[] = new Shape[5];
 public static void main(String args[]) {
   Draw2DObjects app = new Draw2DObjects();
 }
 public Draw2DObjects() {
   add("Center", new MyCanvas());
   shapes[0] = new Line2D.Double(0.0, 0.0, 100.0, 100.0);
   shapes[1] = new Rectangle2D.Double(10.0, 100.0, 200.0, 200.0);
   shapes[2] = new Ellipse2D.Double(20.0, 200.0, 100.0, 100.0);
   GeneralPath path = new GeneralPath(new Line2D.Double(300.0, 100.0, 400.0, 150.0));
   path.append(new Line2D.Double(25.0, 175.0, 300.0, 100.0), true);
   shapes[3] = path;
   shapes[4] = new RoundRectangle2D.Double(350.0, 250, 200.0, 100.0, 50.0, 25.0);
   setSize(400, 400);
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   setVisible(true);
 }
 class MyCanvas extends Canvas {
   public void paint(Graphics graphics) {
     Graphics2D g = (Graphics2D) graphics;
     for (int i = 0; i < shapes.length; ++i) {
       if (shapes[i] != null)
         g.draw(shapes[i]);
     }
   }
 }

}</source>

Draw Arcs

   <source lang="java">

import java.awt.Graphics; import javax.swing.JFrame; public class MainClass extends JFrame {

 public static void main(String[] a){
   MainClass f = new MainClass();
   f.setSize(300,300);
   f.setVisible(true);
 }
 
 
 public void paint(Graphics g) {
   g.drawArc(10, 40, 70, 70, 0, 75);
   g.fillArc(100, 40, 70, 70, 0, 75);
   g.drawArc(10, 100, 70, 80, 0, 175);
   g.fillArc(100, 100, 70, 90, 0, 270);
   g.drawArc(200, 80, 80, 80, 0, 180);
 }

}</source>

Draw Ellipses

   <source lang="java">

import java.applet.Applet; import java.awt.Graphics; public class MainClass extends Applet {

 public void paint(Graphics g) {
   g.drawOval(10, 10, 50, 50);
   g.fillOval(100, 10, 75, 50);
   g.drawOval(190, 10, 90, 30);
   g.fillOval(70, 90, 140, 100);
 }

}</source>

Draw rectangles

   <source lang="java">

import java.awt.Graphics; import javax.swing.JFrame; public class MainClass extends JFrame {

 public static void main(String[] a){
   MainClass f = new MainClass();
   f.setSize(300,300);
   f.setVisible(true);
 }
 
 
 public void paint(Graphics g) {
   g.drawRect(10, 10, 60, 50);
   g.fillRect(100, 10, 60, 50);
   g.drawRoundRect(190, 10, 60, 50, 15, 15);
   g.fillRoundRect(70, 90, 140, 100, 30, 40);
 }

}</source>

Fill a solid three-dimensional rectangle

   <source lang="java">

import java.awt.Color; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {

 public static void main(String[] a) {
   JFrame f = new JFrame();
   f.setSize(400, 400);
   f.add(new MainClass());
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   f.setVisible(true);
 }
 public void paint(Graphics g) {
   g.setColor (Color.yellow);  
   g.fill3DRect (5, 15, 50, 75, true); 
 }

}</source>

Resizing output to fit the current size of a window.

   <source lang="java">

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);
 }

}</source>