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via Coderanch by Sven Andersson, 1 year ago
java.lang.NullPointerException at Entry.equals(Test.java:31) at javax.swing.JComboBox.contentsChanged(Unknown Source) at javax.swing.JComboBox.intervalRemoved(Unknown Source) at javax.swing.AbstractListModel.fireIntervalRemoved(Unknown Source) at javax.swing.DefaultComboBoxModel.removeAllElements(Unknown Source) at javax.swing.JComboBox.removeAllItems(Unknown Source) at Test.main(Test.java:8)