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POGridBagLayout is not displaying as expected
 

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    <p>This is my first foray into GridBagLayout, have reviewed the Java documentation online (as well as a lot of SO Q&amp;As) and I've creating a panel that I'm expecting to display as such:</p> <pre><code>+--------------------------+ | choose a timer | +--------+--------+--------+ | 5min | 25min | 30min | +--------+--------+--------+ | 00:00:00 | +--------+--------+--------+ | Start | Pause | Quit | +--------+--------+--------+ </code></pre> <p>and here's the GridBagLayout I'm using.</p> <pre><code>public class ButtonSel extends JFrame implements ActionListener { JLabel buttonSelLabel = new JLabel("Choose Which Timer To Run"); JButton pomoButton = new JButton("00:25:00"); JButton shrtButton = new JButton("00:05:00"); JButton longButton = new JButton("00:30:00"); JButton startButton = new JButton("Go"); JButton pauseButton = new JButton("Pause"); JButton quitButton = new JButton("Quit"); JLabel textDisplay = new JLabel("00:00:00"); // JPanel timerPanel = new JPanel(); // public ButtonSel() { super("ButtonTest"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); add(buttonSelLabel, c); // line 1 c.fill = GridBagConstraints.HORIZONTAL; c.gridx = 1; c.gridy = 1; c.gridwidth = 3; add(pomoButton, c); // line 2 c.gridx = 1; c.gridy = 2; c.gridwidth = 1; add(shrtButton, c); c.gridx = 2; c.gridy = 2; c.gridwidth = 1; add(longButton, c); c.gridx = 3; c.gridy = 2; c.gridwidth = 1; add(textDisplay, c); // line 3 c.fill = GridBagConstraints.HORIZONTAL; c.gridx=1; c.gridy=3; c.gridwidth=3; add(startButton, c); // line 4 c.gridx = 1; c.gridy = 4; c.gridwidth = 1; add(pauseButton, c); c.gridx = 2; c.gridy = 4; c.gridwidth = 1; add(quitButton, c); c.gridx = 2; c.gridy = 4; c.gridwidth = 1; pomoButton.addActionListener(this); shrtButton.addActionListener(this); longButton.addActionListener(this); startButton.addActionListener(this); pauseButton.addActionListener(this); quitButton.addActionListener(this); } public void actionPerformed(ActionEvent radioSelect) { Object source = radioSelect.getSource(); if (source == pomoButton) textDisplay.setText("00:25:00"); else if (source == shrtButton) textDisplay.setText("00:05:00"); else if (source == longButton) textDisplay.setText("00:30:00"); else if (source == startButton) textDisplay.setText("Started"); else if (source == pauseButton) textDisplay.setText("Paused"); else if (source == quitButton) textDisplay.setText("Quit"); else textDisplay.setText("00:00:00"); } } </code></pre> <p>I was getting this output, </p> <p><img src="https://i.stack.imgur.com/AZMz7.jpg" alt="enter image description here"></p> <p>and taking a cue about horizontal alignment from <a href="https://stackoverflow.com/questions/10163501/laying-out-components-in-gridbaglayout-not-as-expected">this question</a> I added the <code>HORIZONTAL</code> constraints to the the fields. Now I'm getting:</p> <p><img src="https://i.stack.imgur.com/MSN1k.jpg" alt="enter image description here"></p> <p>I've used <code>(0,0)</code> and <code>(1,1)</code> as my starting <code>(x,y)</code> coordinates, interestingly enough, with the same results. </p> <p>Can anyone see something that I'm missing? </p>
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    1. COYour code is not runnable, so I couldn't test this, but you're using the same GridBagConstraints instance for all your components. I see you setting c.fill = GridBagConstraints.HORIZONTAL for your first component. Is that what you want for all your components? You're also setting the GridBagConstraints after you add them to the component. Set them before the add.
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    2. COAha...that did it. I'd thought that you add the component before adding the component parameters, but it should be the other way around: define the parameters, then add the component. Also; code is updated so it's runnable.
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    3. COAt this point, yes, I want `HORIZONAL` for all my components. Once I get it working and I see how it looks, I'll be deciding to keep it or not...
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