This test fails time to time:
java.lang.NullPointerException
at java.desktop/javax.swing.plaf.synth.SynthLabelUI.uninstallDefaults(SynthLabelUI.java:79)
at java.desktop/javax.swing.plaf.basic.BasicLabelUI.uninstallUI(BasicLabelUI.java:350)
at java.desktop/javax.swing.JComponent.uninstallUIAndProperties(JComponent.java:700)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:675)
at java.desktop/javax.swing.JLabel.setUI(JLabel.java:256)
at java.desktop/javax.swing.JLabel.updateUI(JLabel.java:270)
at java.desktop/javax.swing.border.TitledBorder$1.propertyChange(TitledBorder.java:771)
at java.desktop/java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:341)
at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333)
at java.desktop/javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:92)
at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:266)
at java.desktop/javax.swing.UIManager.setLookAndFeel(UIManager.java:596)
at bug6924059.main(bug6924059.java:39)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainActionHelper$SameVMRunnable.run(MainActionHelper.java:229)
at java.base/java.lang.Thread.run(Thread.java:842)