Layout of components

Question

Hi!
Yesterday I posted an entry about organizing Swing components and adding margins. See: http://forum.java.sun.com/thread.jspa?threadID=699029&messageID=4057473#4057473. I am quite new to these things, so the anwers I got didn't really help me much. Does anyone around here have any ideas?
/P

Answer 1

Here is the code:
* LunarPhases.java is a 1.4 example that requires
* the following files:
*    Angry: Ekman/0.jpg
*    Disgust: Ekman/1.jpg
*    Fear: Ekman/2.jpg
*    Happy: Ekman/3.jpg
*    Sad: Ekman/4.jpg
*    Surprise: Ekman/5.jpg
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.URL;
import javax.swing.filechooser.*;
import java.io.*;
public class MonkeyControl implements ActionListener {
    final static int NUM_IMAGES = 6;
    final static int START_INDEX = 3;
    int fileindex = 0;
    //String[] imagefiles = new String[NUM_IMAGES];
    ImageIcon[] images = new ImageIcon[NUM_IMAGES];
    JPanel mainPanel, selectPanel, displayPanel, audioPanel, buttonPanel;
    //JComboBox behaviourChoices = null;
    JFileChooser behaviourChooser = null;
    JButton chooseBehaviourButton = null;
    //JLabel behaviourLabel = null;
    JTextArea behaviourArea= null;
    JLabel behaviourIconLabel = null;
    //JComboBox audioChoices = null;
    JButton submitButton = null;
    JButton stopButton = null;
    JFileChooser audioChooser = null;
    JButton chooseAudioButton = null;
    JLabel audioLabel = null;
    MonkeyClient client = null;
    GridBagConstraints gbc;
    GridBagConstraints gbct;
    public MonkeyControl() {
         //Create MonkeyClient   
         client = new MonkeyClient();
        //Create the phase selection and display panels.
        selectPanel = new JPanel();
        displayPanel = new JPanel();
        audioPanel = new JPanel();
        buttonPanel = new JPanel();
        gbc = new GridBagConstraints();
        gbct = new GridBagConstraints();
        //Add various widgets to the sub panels.
        addWidgets();
        //Create the main panel to contain the two sub panels.
        mainPanel = new JPanel();
        mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.PAGE_AXIS));
        mainPanel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        //Add the select and display panels to the main panel.
        mainPanel.add(selectPanel);
        mainPanel.add(displayPanel);
        mainPanel.add(audioPanel);
        mainPanel.add(buttonPanel);
        audioPanel.setLayout(new BoxLayout(audioPanel, BoxLayout.Y_AXIS));
        //selectPanel.setLayout(new BoxLayout(selectPanel, BoxLayout.Y_AXIS));
        selectPanel.setLayout(new GridBagLayout());
        buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.X_AXIS));
     * Get the images and set up the widgets.
    private void addWidgets() {
        //Get the images and put them into an array of ImageIcons.
        for (int i = 0; i < NUM_IMAGES; i++) {
            images[i] = createImageIcon("/Ekman/" + i + ".jpg");
         * Create a label for displaying the behaviour images and
         * put a border around it.
        behaviourIconLabel = new JLabel();
        behaviourIconLabel.setHorizontalAlignment(JLabel.CENTER);
        behaviourIconLabel.setVerticalAlignment(JLabel.CENTER);
        behaviourIconLabel.setVerticalTextPosition(JLabel.CENTER);
        behaviourIconLabel.setHorizontalTextPosition(JLabel.CENTER);
        behaviourIconLabel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createLoweredBevelBorder(),
            BorderFactory.createEmptyBorder(5,5,5,5)));
        behaviourIconLabel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createEmptyBorder(0,0,10,0),
            behaviourIconLabel.getBorder()));
        //Create a combo box with behaviour choices.
        /*String[] behaviours = { "Anger", "Disgust", "Fear",
                            "Happiness", "Sadness", "Surprise"};
        behaviourChoices = new JComboBox(behaviours);
        behaviourChoices.setSelectedIndex(START_INDEX);*/
        behaviourChooser = new JFileChooser("C:/Documents and Settings/paulina/My Documents/Animatronics on Rachel's Computer (18.85.44.141)/monkey_control/movements");
        chooseBehaviourButton = new JButton("Select behaviour file");
        chooseBehaviourButton.setActionCommand("choose behaviour");
        chooseBehaviourButton.setVerticalAlignment(JButton.CENTER);
        chooseBehaviourButton.setHorizontalAlignment(JButton.CENTER);
        gbc.insets = new Insets(10,10,10,10);  //padding
        gbc.anchor = GridBagConstraints.WEST;
        //behaviourLabel = new JLabel("    Behaviour file");
        behaviourArea = new JTextArea();
        behaviourArea.setEditable(true);
        gbct.insets = new Insets(10,10,10,10);  //padding
        gbct.anchor = GridBagConstraints.EAST;
        //Create a combo box with audio files.
        /*String[] soundclip = { "Ding", "Disgust", "Fear",
                            "Happiness", "Sadness"};
        audioChoices = new JComboBox(soundclip);
        behaviourChoices.setSelectedIndex(START_INDEX);*/
        //Create a file chooser for audio clips
        audioChooser = new JFileChooser("C:/Documents and Settings/paulina/My Documents/Animatronics on Rachel's Computer (18.85.44.141)/monkey_control/sounds");
        chooseAudioButton = new JButton("Select audio file");
        chooseAudioButton.setActionCommand("choose audio");
        //Create label for displaying chosen file
        audioLabel = new JLabel("    Audio file");
        //FileFilter filter = new FileFilter();
        //filter.addExtension("wav");
        //filter.setDescription("Wav audio files");
        //audioChooser.setFileFilter(filter);
        //Create a button for sending the data.
        submitButton = new JButton("Send");
        submitButton.setActionCommand("submit");
        //Create a button for stopping.
        stopButton = new JButton("Stop");
        stopButton.setActionCommand("stop");
        //Display the first image.
        behaviourIconLabel.setIcon(images[START_INDEX]);
        behaviourIconLabel.setText("");
        //Add a border around the select panel.
        selectPanel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createTitledBorder("Select Behaviour"),
            BorderFactory.createEmptyBorder(5,5,5,5)));
        //Add a border around the display panel.
        displayPanel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createTitledBorder("Display Behaviour"),
            BorderFactory.createEmptyBorder(5,5,5,5)));
        //Add a border around the display panel.
        audioPanel.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createTitledBorder("Choose Audio Clip"),
            BorderFactory.createEmptyBorder(5,5,5,5)));
//      //Add space around the components.
        behaviourArea.setBorder(BorderFactory.createEmptyBorder(10,5,10,5));
        chooseBehaviourButton.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        behaviourArea.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        //Add Swing components
        displayPanel.add(behaviourIconLabel);
        selectPanel.add(chooseBehaviourButton, gbc);
        selectPanel.add(behaviourArea, gbct);
        audioPanel.add(chooseAudioButton);
        audioPanel.add(audioLabel);
        buttonPanel.add(submitButton);
        buttonPanel.add(stopButton);
        //Listen to events from ComboBox and submitButton.
        //behaviourChoices.addActionListener(this);
        submitButton.addActionListener(this);
        stopButton.addActionListener(this);
        chooseAudioButton.addActionListener(this);
        chooseBehaviourButton.addActionListener(this);
        //audioChoices.addActionListener(this);
    public void actionPerformed(ActionEvent event) {
         String behaviour = null;
         //not used
         if ("comboBoxChanged".equals(event.getActionCommand())) {
            //Update the icon to display the new phase.
         //behaviourIconLabel.setIcon(images[behaviourChoices.getSelectedIndex()]);*/
        else if ("choose audio".equals(event.getActionCommand())) {
             int returnVal = audioChooser.showOpenDialog(chooseAudioButton);
            if(returnVal == JFileChooser.APPROVE_OPTION) {
                 audioLabel.setText("    " + audioChooser.getSelectedFile().getName());
        else if ("choose behaviour".equals(event.getActionCommand())) {
             System.out.println("Behaviour: " + (behaviourArea.getText()).trim());
             int returnVal = behaviourChooser.showOpenDialog(chooseBehaviourButton);
            if(returnVal == JFileChooser.APPROVE_OPTION) {
                 behaviour = (behaviourChooser.getSelectedFile().getName());
                 setBehaviourImage(behaviour);
                 behaviourArea.append(behaviour + ";");
        else if("submit".equals(event.getActionCommand())) {
             behaviour = (behaviourArea.getText().trim());
             //syntax: behaviour, audiofile
             try {
                  if (behaviour.endsWith(";")){
                       behaviour = behaviour.substring(0,(behaviour.length()-1));
                       System.out.println("Behaviour: " + behaviour);
                    client.sendData(behaviour, audioLabel.getText().trim());
               } catch (IOException e) {
                    System.err.println(e);
                    //e.printStackTrace()
     else if("stop".equals(event.getActionCommand())){
             try {
             client.sendData("stop", "stop");
             }catch(IOException e){
                  System.err.println(e);
    /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path) {
        java.net.URL imageURL = MonkeyControl.class.getResource(path);
        if (imageURL == null) {
            System.err.println("Resource not found: "
                               + path);
            return null;
        } else {
            return new ImageIcon(imageURL);
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create a new instance of MonkeyControl.
        MonkeyControl phases = new MonkeyControl();
        //Create and set up the window.
        JFrame MonkeyControlFrame = new JFrame("Monkey Control");
        MonkeyControlFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        MonkeyControlFrame.setContentPane(phases.mainPanel);
        //Display the window.
        MonkeyControlFrame.pack();
        MonkeyControlFrame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
    public void setBehaviourImage(String behaviour) {
         int index = 0;
         //String behaviour = (behaviourArea.getText()).trim();
         System.out.println("beh: " + behaviour);
         if(behaviour.equals(("monkey_angry.txt")))
              index =0;
         else if(behaviour.equals(("monkey_disgusted.txt")))
              index = 1;
         else if(behaviour.equals(("monkey_fearful.txt")))
              index=2;
         else if(behaviour.equals(("monkey_happy.txt")))
              index=3;
         else if(behaviour.equals(("monkey_sad.txt")))
              index=4;
         else if(behaviour.equals(("monkey_surprised.txt")))
              index=5;
         else
              index=5;
         System.out.println("index: " + index);
         behaviourIconLabel.setIcon(images[index]);
}