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    <p><a href="http://download.oracle.com/javase/tutorial/uiswing/components/label.html" rel="noreferrer">JLabel</a> is by defalut <code>non-Opaque</code>, even you setBackGround(whatever), then without definitions for <code>myLabel.setOpaque(true);</code> isn't <code>JLabel'area</code> colorized, another way is using <a href="http://download.oracle.com/javase/tutorial/2d/index.html" rel="noreferrer">CustomPaint</a> with overide <code>paintComponetn()</code>, for example</p> <p><img src="https://i.stack.imgur.com/83jqP.jpg" alt="enter image description here"></p> <pre><code>import java.awt.*; import javax.swing.*; public class LabelBackGround { private JFrame frame; public LabelBackGround() { JLabel lblWest = new JLabel(); lblWest.setPreferredSize(new Dimension(50, 150)); lblWest.setOpaque(true); lblWest.setBackground(Color.red); JLabel lblEast = new JLabel(); lblEast.setPreferredSize(new Dimension(50, 150)); lblEast.setOpaque(true); lblEast.setBackground(Color.red); frame = new JFrame(); frame.add(new CustomColoredComponents(), BorderLayout.NORTH); frame.add(new CustomColoredComponents(), BorderLayout.SOUTH); frame.add(lblWest, BorderLayout.WEST); frame.add(lblEast, BorderLayout.EAST); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(100, 100); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { LabelBackGround gridBadFrame = new LabelBackGround(); } }); } } class CustomColoredComponents extends JLabel { private static final long serialVersionUID = 1L; @Override public Dimension getMinimumSize() { return new Dimension(200, 20); } @Override public Dimension getPreferredSize() { return new Dimension(200, 30); } @Override public void paintComponent(Graphics g) { int margin = 10; Dimension dim = getSize(); super.paintComponent(g); g.setColor(Color.blue); g.fillRect(margin, margin, dim.width - margin * 2, dim.height - margin * 2); } } </code></pre> <p>EDIT:</p> <p>and void that you posted has too much problem with <a href="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html" rel="noreferrer">Concurency in Swing</a>, then all output from <code>BackGroung Tasks</code> to the GUI must be wrapped into <code>invokeLater()</code> and last code lines in you code block would be <code>revalidate ()</code> and <code>repaint()</code> for fill <code>JComponents</code> inside visible Container </p>
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    1. POHow can I change label color in Java?
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    1. POHow can I change label color in Java?
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    1. COYes I have already change setOpaque() value as true. But it doesn't give the solution.
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    2. COI edited my post, that's another issue, and I think that nothing to do with setBackGroung for JLabel
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    3. CO+1 for the invokelater wrap and the explanation
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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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