Lining up in the same line in GridBagLayout

[Yohan Weerasinghe]

Please have a look at the following code

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    
    public class TestForm extends JFrame
    {
        private JLabel heightLabel, weightLabel, waistLabel, neckLabel, hipsLabel,bfPercentageLabel;
        
        private JTextField heightTxt, weightTxt, waistTxt, neckTxt, hipsTxt;
        
        private JPanel centerPanel;
        private JPanel southPanel;
        private JLabel endTargetWeightLabel;
        private JLabel endTargetWeightResultLabel;
        private JLabel fatMustLoseLabel;
        private JLabel fatMustLoseResultLabel;
        
        
          public TestForm()
          {
            //Declaring instance variables  
            heightLabel = new JLabel("Height: ");
            weightLabel = new JLabel("Weight: ");
            waistLabel = new JLabel("Waist: ");
            neckLabel = new JLabel("Neck: ");
            hipsLabel = new JLabel("Hips: ");        
            bfPercentageLabel = new JLabel("The Orginal Test Score Is: ");
            
            heightTxt = new JTextField(7);
            weightTxt = new JTextField(7);
            waistTxt = new JTextField(7);
            neckTxt = new JTextField(7);
            hipsTxt = new JTextField(7);
          
            endTargetWeightLabel = new JLabel("Your End Target Performance is: ");
            fatMustLoseLabel = new JLabel("Sammple Performance You Must Lose: ");
           
            
            endTargetWeightResultLabel = new JLabel("d");
            fatMustLoseResultLabel = new JLabel("e");
           
            this.add(createNorthPanel(),"North");
            this.add(createCenterPanel(),"Center");
            this.add(createSouthPanel(),"South");
            this.add(new JPanel(),"West");
            this.add(new JPanel(),"East");
            this.setTitle("The Test Form");
            this.pack();
            this.setLocationRelativeTo(null);
            this.setVisible(true);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            
            
        }
          
        private JPanel createNorthPanel()
        {
            JPanel northPanel = new JPanel();
            
            northPanel = new JPanel();
            northPanel.setLayout(new FlowLayout());
            
            JLabel logoLabel = new JLabel();
            logoLabel.setIcon(new ImageIcon(getClass().getResource("/images/TESTING-LOGO.gif")));
            
            northPanel.add(logoLabel);
            
            return northPanel;
        }
        
        
        private JPanel createCenterPanel()
        {
            centerPanel = new JPanel();
            
            GridBagLayout gbl = new GridBagLayout();
            GridBagConstraints gbc = new GridBagConstraints();
            
            centerPanel.setLayout(gbl);
            
            gbc.gridx = 1;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,0,0,0);
            centerPanel.add(heightLabel,gbc);
            
            gbc.gridx = 2;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,0,0,0);
            centerPanel.add(heightTxt,gbc);
            
            gbc.gridx = 3;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,10,0,0);
            centerPanel.add(weightLabel,gbc);
            
            gbc.gridx = 4;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,-10,0,0);
            centerPanel.add(weightTxt,gbc);
            
            gbc.gridx = 1;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,0,0,0);
            centerPanel.add(waistLabel,gbc);
            
            gbc.gridx = 2;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,0,0,0);
            centerPanel.add(waistTxt,gbc);
            
            gbc.gridx = 3;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,10,0,0);
            centerPanel.add(neckLabel,gbc);
            
            gbc.gridx = 4;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,-10,0,0);
            centerPanel.add(neckTxt,gbc);
            
            gbc.gridx = 5;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,7,0,0);
            centerPanel.add(hipsLabel,gbc);
            
            gbc.gridx = 6;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(15,5,0,0);
            centerPanel.add(hipsTxt,gbc);
            
    
            
            gbc.gridx = 1;
            gbc.gridy = 5;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(50,0,0,0);
            gbc.gridwidth = 6;
            centerPanel.add(bfPercentageLabel,gbc);
            
            
            centerPanel.setBorder(BorderFactory.createTitledBorder("The Testing Form"));
            
            centerPanel.setPreferredSize(centerPanel.getPreferredSize());
            centerPanel.validate();
            
            return centerPanel;
            
        }
        
        
         private JPanel createSouthPanel()
        {
            southPanel = new JPanel();
                    
            GridBagLayout gbl = new GridBagLayout();
            GridBagConstraints gbc = new GridBagConstraints();
            
            southPanel.setLayout(gbl);
            
            
            gbc.gridx = 1;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(10,0,0,0);
            southPanel.add(endTargetWeightLabel,gbc);
            
            gbc.gridx = 2;
            gbc.gridy = 1;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(10,5,0,0);
            southPanel.add(endTargetWeightResultLabel,gbc);
            
            gbc.gridx = 1;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(10,0,0,0);
            southPanel.add(fatMustLoseLabel,gbc);
            
            gbc.gridx = 2;
            gbc.gridy = 2;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.insets = new Insets(10,5,0,0);
            southPanel.add(fatMustLoseResultLabel,gbc);
            
            southPanel.setPreferredSize(new Dimension(centerPanel.getWidth(),100));
            southPanel.setBorder(BorderFactory.createTitledBorder("See Your End Target Weight"));
            
            return southPanel;
        }
        
        public static void main(String[]args)
        {
            try
            {
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                new TestForm();
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
            
        }
    }

The above is the maximum shortened code possible. Removing further more elements will not display the original error.

OK. Now the problem is about alignment. Once you run the code, you will see the following.


As you can see in there, there elements in the `southPanel` are not aligned well with `centerPanel`. Which means, I expect that `southPanel` JLabels to come into the same line where the `centerPanel` JLabels start. But it ended up in this way. I want the JLabels in `southPanel` to be appeared in the same line where the JLabels of `centerPanel` begins. What I am telling is clearly displayed in the following image. How can I do it? Please help!

PS: I am attaching the "Test Image" as well, so you can test it if you want.

PS: Some suggested me to have everything inside the centerPanel. But the case is, I need 2 panels, because I need to display "titles" in that manner, as getting displayed in "TitledBorder".

PS: I noted performing minus values will do the trick. But most developers says it will make troubles.

            gbc.gridx = 1;  
            gbc.gridy = 1;  
            gbc.fill = GridBagConstraints.BOTH;  
            gbc.insets = new Insets(10,-60,0,0);  
            southPanel.add(endTargetWeightLabel,gbc);  

Please help!

[Yohan Weerasinghe]

This image explains what I want

[Michael Dunn]

have the replies at StackOverflow resolved the problem?

[Yohan Weerasinghe]

Michael Dunn wrote:have the replies at StackOverflow resolved the problem?

Hi, Thank you for the reply. No I didn't get any help. There is no understandable answer there, which should contain some kind of UNDERSTANDABLE code snippet. Please help.

[Campbell Ritchie]

I think MD was alluding to this.

[m Korbel]

and quite good answered (twice asked question) on another forum