/* * Copyright (c) 1995 - 2008 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: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions 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 nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Java(TM) SE 6 version. */import javax.swing.JApplet;import javax.swing.JTextField;import javax.swing.SwingUtilities;//Since we're adding a Swing component, we now need to//extend JApplet. We need to be careful to access//components only on the event-dispatching thread.public class ScrollingSimple extends JApplet {    JTextField field;    public void init() {        //Execute a job on the event-dispatching thread:        //creating this applet's GUI.        try {            SwingUtilities.invokeAndWait(new Runnable() {                public void run() {                    createGUI();                }            });        } catch (Exception e) {            System.err.println("createGUI didn't successfully complete");        }        addItem(false, "initializing... ");    }    private void createGUI() {                //Create the text field and make it uneditable.        field = new JTextField();        field.setEditable(false);        //Set the layout manager so that the text field will be        //as wide as possible.        setLayout(new java.awt.GridLayout(1,0));        //Add the text field to the applet.        add(field);    }    public void start() {        addItem(false, "starting... ");    }    public void stop() {        addItem(false, "stopping... ");    }    public void destroy() {        addItem(false, "preparing for unloading...");        cleanUp();    }        private void cleanUp() {        //Execute a job on the event-dispatching thread:        //taking the text field out of this applet.        try {            SwingUtilities.invokeAndWait(new Runnable() {                public void run() {                    remove(field);                }            });        } catch (Exception e) {            System.err.println("cleanUp didn't successfully complete");        }        field = null;    }    private void addItem(boolean alreadyInEDT, String newWord) {        if (alreadyInEDT) {            addItem(newWord);        } else {            final String word = newWord;            //Execute a job on the event-dispatching thread:            //invoking addItem(newWord).            try {                SwingUtilities.invokeAndWait(new Runnable() {                    public void run() {                        addItem(word);                    }                });            } catch (Exception e) {                System.err.println("addItem didn't successfully complete");            }        }    }            //Invoke this method ONLY from the event-dispatching thread.    private void addItem(String newWord) {        String t = field.getText();        System.out.println(newWord);        field.setText(t + newWord);    }}