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    <ol> <li>Avoid <code>null</code> layouts. You don't control how fonts are rendered on different system so unless you intent to only run you application on the machine it was developed for, avoid <code>null</code> layouts. Learn to use and understand how different layout managers can be used to achieve what you want.</li> <li>Use a <a href="http://docs.oracle.com/javase/tutorial/uiswing/layout/card.html" rel="nofollow noreferrer"><code>CardLayout</code></a>, this is what it was designed to do, allow you to easily change groups of visible components.</li> </ol> <p>This will require you to break down you application into separate components/panels but will allow you focus on the individual needs of each section independently </p> <p><strong>Update with example</strong></p> <p><img src="https://i.stack.imgur.com/bf0JR.png" alt="enter image description here"><img src="https://i.stack.imgur.com/xDNw2.png" alt="enter image description here"><img src="https://i.stack.imgur.com/wAYiC.png" alt="enter image description here"></p> <pre><code>import java.awt.CardLayout; import java.awt.Container; import java.awt.EventQueue; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JSeparator; import javax.swing.JTextField; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class TestCardLayout100 { public static void main(String[] args) { new TestCardLayout100(); } public TestCardLayout100() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } LoginPane loginPane = new LoginPane(); RegisterPane registerPane = new RegisterPane(); JPanel startPane = new JPanel(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; startPane.add(loginPane, gbc); gbc.gridx = 2; startPane.add(registerPane, gbc); gbc.gridx = 1; gbc.fill = GridBagConstraints.VERTICAL; startPane.add(new JSeparator(JSeparator.VERTICAL), gbc); JPanel loggedInPane = new JPanel(new GridBagLayout()); loggedInPane.add(new JLabel("Logged In...")); JPanel registeredPane = new JPanel(new GridBagLayout()); registeredPane.add(new JLabel("Registered...")); final JFrame frame = new JFrame("Testing"); final CardLayout cardLayout = new CardLayout(); loginPane.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { cardLayout.show(frame.getContentPane(), "loggedIn"); } }); registerPane.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { cardLayout.show(frame.getContentPane(), "registered"); } }); Container contentPane = frame.getContentPane(); contentPane.setLayout(cardLayout); contentPane.add(startPane, "startPane"); contentPane.add(loggedInPane, "loggedIn"); contentPane.add(registeredPane, "registered"); cardLayout.show(contentPane, "startPane"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class LoginPane extends JPanel { private final JLabel logusrlbl = new JLabel("Enter Username"); private final JLabel logpwdlbl = new JLabel("Enter Password"); private final JTextField logusr = new JTextField(10); private final JTextField logpwd = new JPasswordField(10); private final JButton login = new JButton("Login"); public LoginPane() { setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; gbc.gridwidth = GridBagConstraints.REMAINDER; add(new JLabel("Login"), gbc); gbc.gridy++; gbc.gridwidth = 1; add(logusrlbl, gbc); gbc.gridy++; add(logpwdlbl, gbc); gbc.gridx++; gbc.weightx = 1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.gridy = 1; add(logusr, gbc); gbc.gridy++; add(logpwd, gbc); gbc.gridx = 0; gbc.gridy++; gbc.anchor = GridBagConstraints.EAST; gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.fill = GridBagConstraints.NONE; add(login, gbc); } public void addActionListener(ActionListener listener) { login.addActionListener(listener); } } public class RegisterPane extends JPanel { private final JLabel logusrlbl = new JLabel("Enter Username"); private final JLabel logpwdlbl = new JLabel("Enter Password"); private final JTextField logusr = new JTextField(10); private final JTextField logpwd = new JPasswordField(10); private final JButton register = new JButton("Register"); public RegisterPane() { setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; gbc.gridwidth = GridBagConstraints.REMAINDER; add(new JLabel("Register"), gbc); gbc.gridy++; gbc.gridwidth = 1; add(logusrlbl, gbc); gbc.gridy++; add(logpwdlbl, gbc); gbc.gridx++; gbc.weightx = 1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.gridy = 1; add(logusr, gbc); gbc.gridy++; add(logpwd, gbc); gbc.gridx = 0; gbc.gridy++; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; gbc.gridwidth = GridBagConstraints.REMAINDER; add(register, gbc); } public void addActionListener(ActionListener listener) { register.addActionListener(listener); } } } </code></pre>
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    1. COCould you expand upon that? I've read a lot on CardLayout but I don't know how I could apply it to this code. I'm still a very new programmer. Thanks!
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    2. COI updated it with a runnable example, but you really should read the linked tutorial (from point 2)
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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