Pear.java Source code

Introduction

Here is the source code for Pear.java

Source

/*
 *
 * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;

import javax.swing.JApplet;
import javax.swing.JFrame;

public class Pear extends JApplet {

    Ellipse2D.Double circle, oval, leaf, stem;

    Area circ, ov, leaf1, leaf2, st1, st2;

    public void init() {
        circle = new Ellipse2D.Double();
        oval = new Ellipse2D.Double();
        leaf = new Ellipse2D.Double();
        stem = new Ellipse2D.Double();
        circ = new Area(circle);
        ov = new Area(oval);
        leaf1 = new Area(leaf);
        leaf2 = new Area(leaf);
        st1 = new Area(stem);
        st2 = new Area(stem);

        setBackground(Color.white);
    }

    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        Dimension d = getSize();
        int w = d.width;
        int h = d.height;
        double ew = w / 2;
        double eh = h / 2;

        g2.setColor(Color.green);

        // Creates the first leaf by filling the intersection of two Area objects
        // created from an ellipse.
        leaf.setFrame(ew - 16, eh - 29, 15.0, 15.0);
        leaf1 = new Area(leaf);
        leaf.setFrame(ew - 14, eh - 47, 30.0, 30.0);
        leaf2 = new Area(leaf);
        leaf1.intersect(leaf2);
        g2.fill(leaf1);

        // Creates the second leaf.
        leaf.setFrame(ew + 1, eh - 29, 15.0, 15.0);
        leaf1 = new Area(leaf);
        leaf2.intersect(leaf1);
        g2.fill(leaf2);

        g2.setColor(Color.black);

        // Creates the stem by filling the Area resulting from the subtraction of
        // two Area objects created from an ellipse.
        stem.setFrame(ew, eh - 42, 40.0, 40.0);
        st1 = new Area(stem);
        stem.setFrame(ew + 3, eh - 47, 50.0, 50.0);
        st2 = new Area(stem);
        st1.subtract(st2);
        g2.fill(st1);

        g2.setColor(Color.yellow);

        // Creates the pear itself by filling the Area resulting from the union of
        // two Area objects created by two different ellipses.
        circle.setFrame(ew - 25, eh, 50.0, 50.0);
        oval.setFrame(ew - 19, eh - 20, 40.0, 70.0);
        circ = new Area(circle);
        ov = new Area(oval);
        circ.add(ov);
        g2.fill(circ);
    }

    public static void main(String s[]) {
        JFrame f = new JFrame("Pear");
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        JApplet applet = new Pear();
        f.getContentPane().add("Center", applet);
        applet.init();
        f.pack();
        f.setSize(new Dimension(150, 200));
        f.show();
    }

}