Name: gm110360 Date: 04/16/2004


FULL PRODUCT VERSION :
D:\temp>java -version
java version "1.4.2_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06)
Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)

FULL OS VERSION :
C:\>ver
Microsoft Windows XP [Version 5.1.2600]

It is "Windows XP Professional with Service Pack 1"

A DESCRIPTION OF THE PROBLEM :
JTabbedPane - setBackgroundAt does NOT set background color in Windows XP - SP1 if UIManager.getSystemLookAndFeelClassName() is used.

If the look and feel is changed to UIManager.getCrossPlatformLookAndFeelClassName(), then setting background (using setBackgroundAt) color works fine.

Please see sample code that I have put in the "Source Code" section, which fails to set colors for TABS under Windows XP - SP1 when using JRE 1.4.2_01.

I also experimented and observed that setting default color for JTabbedPane does NOT work. For example, the following code fails to make TAB background yellow under Windows XP - SP1 when using JRE 1.4.2.

  uiDefaults.put("TabbedPane.background", Color.yellow);


NOTE:
Replacing "UIManager.getSystemLookAndFeelClassName()" in the source code with "UIManager.getCrossPlatformLookAndFeelClassName()" sets colors properly. But, we like to use for our purpose.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the source code in the "Source Code" section.

Run it under "Windows XP Professional - Service Pack 1" that uses JRE 1.4.2_01 for running Java applications.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
TAB "One" should be green
TAB "Two" should be yellow
TAB "Three" should be red
TAB "Four" should be cyan
ACTUAL -
All TABs are shown in the same color with white background and colored (like, orange) border.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.UIManager;

import java.awt.*;
import java.awt.event.*;

public class TEMP_TABBED_PANE extends JPanel {

    public TEMP_TABBED_PANE() {
        JTabbedPane tabbedPane = new JTabbedPane();

        Component panel1 = makeTextPanel("Blah");
        tabbedPane.addTab("One", panel1);
        tabbedPane.setSelectedIndex(0);
        tabbedPane.setBackgroundAt(0, Color.green);

        Component panel2 = makeTextPanel("Blah blah");
        tabbedPane.addTab("Two", panel2);
        tabbedPane.setBackgroundAt(1, Color.yellow);

        Component panel3 = makeTextPanel("Blah blah blah");
        tabbedPane.addTab("Three", panel3);
        tabbedPane.setBackgroundAt(2, Color.red);

        Component panel4 = makeTextPanel("Blah blah blah blah");
        tabbedPane.addTab("Four", panel4);
        tabbedPane.setBackgroundAt(3, Color.cyan);

        //Add the tabbed pane to this panel.
        setLayout(new GridLayout(1, 1));
        add(tabbedPane);
    }

    protected Component makeTextPanel(String text) {
        JPanel panel = new JPanel(false);
        JLabel filler = new JLabel(text);
        filler.setHorizontalAlignment(JLabel.CENTER);
        panel.setLayout(new GridLayout(1, 1));
        panel.add(filler);
        return panel;
    }

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        }
        catch(Exception e) {
            e.printStackTrace();
        }

        JFrame frame = new JFrame("Tabbed Pane Demo for Color");
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        });

        frame.getContentPane().add(new TEMP_TABBED_PANE(),
                                   BorderLayout.CENTER);
        frame.setSize(400, 125);
        frame.setVisible(true);
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Replacing "UIManager.getSystemLookAndFeelClassName()" in the following code with "UIManager.getCrossPlatformLookAndFeelClassName()" sets colors properly. But, we like to use for our purpose.

Release Regression From : 1.3.1_11
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.

(Incident Review ID: 208849)
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