Java Gridbag Layout Not Working

Question

Hi,
I have a java sound applet that works, with buttons and icons and combo boxes. I have just added a label and I want the label to appear beneath the buttons and combo boxes, so I decided that Gribag is the best way of achieving this. However, I have set all the co-ordinates to the right places, and suddenly, everything is in the center in one line. Here is the code:
import javax.swing.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class SoundApplet extends JApplet
                         implements ActionListener,
                                    ItemListener {
    AppletSoundList soundList;
    String auFile = "spacemusic.au";
    String aiffFile = "flute+hrn+mrmba.aif";
    String midiFile = "trippygaia1.mid";
    String wavFile = "monkwebstune.wav";
    String chosenFile;
    AudioClip onceClip, loopClip;
    JComboBox formats;
    JButton playButton, loopButton, stopButton;
    boolean looping = false;
    public void init() {
        String [] fileTypes = {auFile,
                               aiffFile,
                               midiFile,       
                               wavFile,};
        Container contentArea = getContentPane();
        contentArea.setBackground(Color.black);
        GridBagLayout flowManager = new GridBagLayout();
        GridBagConstraints pos = new GridBagConstraints();
        contentArea.setLayout (flowManager);
        formats = new JComboBox(fileTypes);
        formats.setSelectedIndex(0);
        chosenFile = (String)formats.getSelectedItem();
        formats.addItemListener(this);
        formats.setBackground(Color.blue);
        formats.setForeground(Color.white);
        pos.gridx = 1; pos.gridy = 1;
        contentArea.add(formats, pos);
        Image playImage = getImage( getCodeBase () , "play.gif" );
        ImageIcon playIcon = new ImageIcon( playImage );
        playButton = new JButton("Play", playIcon);
        playButton.addActionListener(this);
        playButton.setBackground(Color.green);
        playButton.setForeground(Color.black);
        pos.gridx = 1; pos.gridy = 1;
        contentArea.add(playButton, pos);
        Image loopImage = getImage( getCodeBase () , "loop.gif" );
        ImageIcon loopIcon = new ImageIcon( loopImage );
        loopButton = new JButton("Loop", loopIcon);
        loopButton.addActionListener(this);
        loopButton.setBackground(Color.yellow);
        loopButton.setForeground(Color.black);
        pos.gridx = 2; pos.gridy = 1;
        contentArea.add(loopButton, pos);
        Image stopImage = getImage( getCodeBase () , "stop.gif" );
        ImageIcon stopIcon = new ImageIcon( stopImage );
        stopButton = new JButton("Stop", stopIcon);
        stopButton.addActionListener(this);
        stopButton.setEnabled(false);
        stopButton.setBackground(Color.red);
        stopButton.setForeground(Color.black);
        pos.gridx = 3; pos.gridy = 1;
        contentArea.add(stopButton, pos);
        JLabel Occult = new JLabel ("Occult");
        pos.gridx = 2; pos.gridy = 3;
        contentArea.add(Occult, pos);
        setContentPane(contentArea);
        JPanel controlPanel = new JPanel();
        controlPanel.add(formats);
        controlPanel.add(playButton);
        controlPanel.add(loopButton);
        controlPanel.add(stopButton);
        controlPanel.add(Occult);
        getContentPane().add(controlPanel);
        controlPanel.setBackground(Color.black);
        setContentPane(contentArea);
        startLoadingSounds();  
    public void itemStateChanged(ItemEvent e) {
        chosenFile = (String)formats.getSelectedItem();
        soundList.startLoading(chosenFile);
    void startLoadingSounds() {
        //Start asynchronous sound loading.
        soundList = new AppletSoundList(this, getCodeBase());
        soundList.startLoading(auFile);
        soundList.startLoading(aiffFile);
        soundList.startLoading(midiFile);
        soundList.startLoading(wavFile);
    public void stop() {
        onceClip.stop();        //Cut short the one-time sound.
        if (looping) {
            loopClip.stop();    //Stop the sound loop.
    public void start() {
        if (looping) {
            loopClip.loop();    //Restart the sound loop.
    public void actionPerformed(ActionEvent event) {
        //PLAY BUTTON
        Object source = event.getSource();
        if (source == playButton) {
            //Try to get the AudioClip.
            onceClip = soundList.getClip(chosenFile);
            onceClip.play();     //Play it once.
            stopButton.setEnabled(true);
            showStatus("Playing sound " + chosenFile + ".");
            if (onceClip == null) {
                showStatus("Sound " + chosenFile + " not loaded yet.");
            return;
        //START LOOP BUTTON
        if (source == loopButton) {
            loopClip = soundList.getClip(chosenFile);
            looping = true;
            loopClip.loop();     //Start the sound loop.
            loopButton.setEnabled(false); //Disable loop button.
            stopButton.setEnabled(true);
            showStatus("Playing sound " + chosenFile + " continuously.");
            if (loopClip == null) {
                showStatus("Sound " + chosenFile + " not loaded yet.");
            return;
        //STOP LOOP BUTTON
        if (source == stopButton) {
            if (looping) {
                looping = false;
                loopClip.stop();    //Stop the sound loop.
                loopButton.setEnabled(true); //Enable start button.
            else if (onceClip != null) {
                onceClip.stop();
            stopButton.setEnabled(false);
            showStatus("Stopped playing " + chosenFile + ".");
            return;
}How can I get everything to follow the co-ordinates I specified?
Thanks in advance.

Answer 1

try setting a weightx or weighty with a non-zero number between 0 and 1.
constraint.weightx = 0.5;