HOY_Draw2D.java

//EJEMPLO DE GRAFICOS EN JAVA 2D API
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

public class Draw2D extends Frame {
 static final int numShapes = 5;
 Shape shapes[] = new Shape[numShapes];
 static final int width = 600;
 static final int height = 400;
 MyMenuBar menuBar;
 EventHandler eh = new EventHandler(); 
 public static void main(String args[]){
  Draw2D app = new Draw2D();
 }
 public Draw2D() {
  super("Draw2D");
  setupMenuBar();
  add("Center",new MyCanvas());
  createShapes();
  setSize(width,height);
  addWindowListener(eh);
  show();
 }
 void createShapes() {
  for(int i=0;i<shapes.length;++i) shapes[i] = null;
  shapes[0] = new Line2D.Double(0.0,0.0,100.0,100.0);
  shapes[1] = new Rectangle2D.Double(100.0,100.0,200.0,200.0);
  shapes[2] = new Ellipse2D.Double(200.0,200.0,100.0,100.0);
  GeneralPath path = 
   new GeneralPath(new Line2D.Double(300.0,100.0,400.0,150.0));
  path.append(new Line2D.Double(400.0,150.0,350.0,200.0),true);
  path.append(new Line2D.Double(350.0,200.0,325.0,175.0),true);
  path.append(new Line2D.Double(325.0,175.0,300.0,100.0),true);
  shapes[3] = path;
  shapes[4] = new RoundRectangle2D.Double(350.0,250,200.0,100.0,50.0,25.0);
 }
 void setupMenuBar(){
  Object menuItems[][] = {{"File","Exit"}};
  menuBar = new MyMenuBar(menuItems,eh,eh);
  setMenuBar(menuBar);
 }
 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]);
   }
  }
 }
 class EventHandler extends WindowAdapter implements ActionListener,
   ItemListener {
  public void actionPerformed(ActionEvent e){
   String selection=e.getActionCommand();
   if("Exit".equals(selection)){
    System.exit(0);
   }
  }
  public void itemStateChanged(ItemEvent e){
  }
  public void windowClosing(WindowEvent e){
   System.exit(0);
  }
 }
}