coloredrect.java

These are the examples from the book Java Examples in a Nutshell, 2nd Edition, by David Flanagan.

/*
 * Copyright (c) 2000 David Flanagan.  All rights reserved.
 * This code is from the book Java Examples in a Nutshell, 2nd Edition.
 * It is provided AS-IS, WITHOUT ANY WARRANTY either expressed or implied.
 * You may study, use, and modify it for any non-commercial purpose.
 * You may distribute it non-commercially as long as you retain this notice.
 * For a commercial use license, or to purchase the book (recommended),
 * visit http://www.davidflanagan.com/javaexamples2.
 */
package com.davidflanagan.examples.classes;
import java.awt.*;

/**
 * This class subclasses DrawableRect and adds colors to the rectangle it draws
 **/
public class ColoredRect extends DrawableRect {
    // These are new fields defined by this class. 
    // x1, y1, x2, and y2 are inherited from our super-superclass, Rect.
    protected Color border, fill;
    
    /**
     * This constructor uses super() to invoke the superclass constructor, and
     * also does some initialization of its own.
     **/
    public ColoredRect(int x1, int y1, int x2, int y2,
		       Color border, Color fill)
    {
        super(x1, y1, x2, y2);
        this.border = border;
        this.fill = fill;
    }
    
    /**
     * This method overrides the draw() method of our superclass so that it
     * can make use of the colors that have been specified.
     **/
    public void draw(Graphics g) {
        g.setColor(fill);
        g.fillRect(x1, y1, (x2-x1), (y2-y1));
        g.setColor(border);
        g.drawRect(x1, y1, (x2-x1), (y2-y1));
    }
}