java.lang.NullPointerException: This exception has no message.

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via Oracle Community by 807595, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at undefined.QuestionEditor$1.itemStateChanged(QuestionEditor.java:240)
at javax.swing.JComboBox.fireItemStateChanged(JComboBox.java:1162)
at javax.swing.JComboBox.selectedItemChanged(JComboBox.java:1219)
at javax.swing.JComboBox.contentsChanged(JComboBox.java:1266)
at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:100)
at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:88)
at javax.swing.DefaultComboBoxModel.addElement(DefaultComboBoxModel.java:126)
at javax.swing.JComboBox.addItem(JComboBox.java:690)
at undefined.QuestionEditor.getJComboBox(QuestionEditor.java:247)
at undefined.QuestionEditor.getJContentPane(QuestionEditor.java:132)
at undefined.QuestionEditor.initialize(QuestionEditor.java:114)
at undefined.QuestionEditor.(QuestionEditor.java:51)
at undefined.Alypaa.(Alypaa.java:18)
at undefined.Alypaa.main(Alypaa.java:25)

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