


Why Doesn\'t My Swing JTabbedPane Update Its Look and Feel After Adding a New Tab?
Look and Feel Does Not Update in Swing JTabbedPane
You have created an application in Java Swing that allows users to change the look and feel from a menu. After adding a new tab in JTabbedPane, however, the changes in look and feel are not reflected in the new tab.
Solution
To address this issue, combine the approaches suggested by @Andrew and a classic solution from swingjs.org:
Window windows[] = Frame.getWindows(); for (Window window : windows) { SwingUtilities.updateComponentTreeUI(window); window.invalidate(); window.validate(); window.repaint(); }
This code updates the look and feel, invalidates and validates the windows, and repaints them to ensure proper rendering.
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