JDK: 7b78+
Platform: All

The following method of the class javax.swing.plaf.synth.SynthSliderUI

protected void uninstallDefaults()
   Uninstalls default setting. This method is called when a LookAndFeel is uninstalled.


is not called as expected. Please see the following code sample:

---------------------------------------------------------------------------------------
import javax.swing.*;
import javax.swing.plaf.synth.SynthLookAndFeel;
import javax.swing.plaf.synth.SynthSliderUI;

public class Test {
    
    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                doTheTest();
            }
        });
    }

    private static void doTheTest() {
        try {
            UIManager.setLookAndFeel(new SynthLookAndFeel());
        } catch (UnsupportedLookAndFeelException e) {
            throw new RuntimeException(e);
        }
        class _SynthSliderUI extends SynthSliderUI {
            protected _SynthSliderUI(JSlider c) { super(c); }
            @Override protected void installDefaults(JSlider slider) {
                System.out.println("installDefaults");
                super.installDefaults(slider);
            }

            @Override protected void installListeners(JSlider slider) {
                System.out.println("installListeners");
                super.installListeners(slider);
            }

            @Override protected void uninstallDefaults() {
                System.out.println("uninstallDefaults");
                super.uninstallDefaults();
            }

            @Override protected void uninstallListeners(JSlider slider) {
                System.out.println("uninstallListeners");
                super.uninstallListeners(slider);
            }
        }
        JSlider slider = new JSlider();
        _SynthSliderUI ui = new _SynthSliderUI(slider);
        slider.setUI(ui);
        slider.setUI(null);
    }
}
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The output will be:

installDefaults
installListeners
uninstallListeners