GetApplets.java Source code

Introduction

Here is the source code for GetApplets.java

Source

/* From http://java.sun.com/docs/books/tutorial/index.html */
/*
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *
 * -Redistribution in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * 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 MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE,
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 *
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
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 */
/*
 * 1.1 version.
 */

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;

public class GetApplets extends Applet implements ActionListener {
    private TextArea textArea;

    private String newline;

    public void init() {
        Button b = new Button("Click to call getApplets()");
        b.addActionListener(this);

        setLayout(new BorderLayout());
        add("North", b);

        textArea = new TextArea(5, 40);
        textArea.setEditable(false);
        add("Center", textArea);

        newline = System.getProperty("line.separator");
    }

    public void actionPerformed(ActionEvent event) {
        printApplets();
    }

    public String getAppletInfo() {
        return "GetApplets by Kathy Walrath";
    }

    public void printApplets() {
        //Enumeration will contain all applets on this page
        //(including this one) that we can send messages to.
        Enumeration e = getAppletContext().getApplets();

        textArea.append("Results of getApplets():" + newline);

        while (e.hasMoreElements()) {
            Applet applet = (Applet) e.nextElement();
            String info = ((Applet) applet).getAppletInfo();
            if (info != null) {
                textArea.append("- " + info + newline);
            } else {
                textArea.append("- " + applet.getClass().getName() + newline);
            }
        }
        textArea.append("________________________" + newline + newline);
    }
}