Index: src/test/api/java/common/javax/swing/plaf/basic/BasicButtonListenerTest.java =================================================================== --- src/test/api/java/common/javax/swing/plaf/basic/BasicButtonListenerTest.java (revision 490131) +++ src/test/api/java/common/javax/swing/plaf/basic/BasicButtonListenerTest.java (working copy) @@ -71,7 +71,14 @@ } public void testPropertyChange() { - //TODO Implement propertyChange(). + try { + javax.swing.plaf.basic.BasicButtonListener l = + new javax.swing.plaf.basic.BasicButtonListener(new JButton()); + l.propertyChange(null); + fail("NPE should be thrown"); + } catch (NullPointerException npe) { + // PASSED + } } public void testMouseReleased() {