Swing

• Inconsistent within a platform.

• Will it be accepted?

Virtual Reality Markup Language

• HTML in three dimensions...

• Cones, Spheres and cubes.

Virtual Reality Markup Language

• Plug-in VRML viewers.

• Drag and drop editors.

	Shape {
        	appearance Appearance {
                	material Material {}
                	texture ImageTexture {url "earth.gif"}
        	}
        	geometry Sphere {}
	}
	
	PointLight {
        	location -1.5 0 0
        	color 1 1 0
        	intensity 1
	}

Consistency: A CRITICAL problem...

• Same buttons on 3 different machines.
  

The Abstract Window Toolkit (AWT)

/*
 * Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */
/* 
 * 1.0 version.
 */

import java.awt.*;              /* Notice - this links to AWT classes */
import java.applet.Applet;

public class ButtonDemo extends Applet {

Button b1, b2, b3;              /* AWT provides a Button class */

    public void init() {
        b1 = new Button();
        b1.setLabel("Disable middle button");

        b2 = new Button("Middle button");

        b3 = new Button("Enable middle button");
        b3.disable();

        //Add Components to the Applet, using the default FlowLayout. 
        add(b1);
        add(b2);
        add(b3);

        //Necessary when adding buttons to an already visible container:
        validate();
    }

    public boolean action(Event e, Object arg) {
        Object target = e.target;
         
        if (target == b1) { //They clicked "Disable middle button"
            b2.disable();
            b1.disable();
            b3.enable();
            return true;
        }
        if (target == b3) { //They clicked "Enable middle button"
            b2.enable();
            b1.enable();
            b3.disable();
            return true;
        }
        return false;
    }
}

Swing

• Inconsistent within a platform.

• Will it be accepted?

Virtual Reality Markup Language

• HTML in three dimensions...

• Cones, Spheres and cubes.

Virtual Reality Markup Language

• Plug-in VRML viewers.

• Drag and drop editors.

	Shape {
        	appearance Appearance {
                	material Material {}
                	texture ImageTexture {url "earth.gif"}
        	}
        	geometry Sphere {}
	}
	
	PointLight {
        	location -1.5 0 0
        	color 1 1 0
        	intensity 1
	}