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Note that there are some explanatory texts on larger screens.

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    <p>Scrollpane and its scrollbars entirely rely on the size of the component in the viewport, which, by default, depends of the preferred size of that component.</p> <p>Check this code which shows you a basic example of how this all works:</p> <pre><code>import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.SwingUtilities; import javax.swing.Timer; public class TestScrollPane { public static class CustomComponent extends JPanel { private static final int RADIUS = 20; private int x = 0; private int y = 0; private double speed = 18; private double dx; private double dy; public CustomComponent() { dx = speed; dy = speed; Timer t = new Timer(20, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { x += dx; y += dy; if (x + RADIUS &gt; getWidth()) { x = getWidth() - RADIUS; dx = -speed; } else if (x &lt; 0) { x = 0; dx = speed; } if (y + RADIUS &gt; getHeight()) { y = getHeight() - RADIUS; dy = -speed; } else if (y &lt; 0) { y = 0; dy = speed; } repaint(); } }); t.start(); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.setColor(Color.RED); g.fillOval(x, y, RADIUS, RADIUS); } @Override public Dimension getPreferredSize() { return new Dimension(600, 600); } } protected void initUI() { JFrame window = new JFrame(TestScrollPane.class.getSimpleName()); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JScrollPane scroll = new JScrollPane(new CustomComponent(), JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); window.add(scroll); window.setSize(600, 500); window.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new TestScrollPane().initUI(); } }); } } </code></pre>
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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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