Chris Johnson, Index
The Abstract Window Toolkit (AWT 1.0)
/*
* 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;
}
}