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

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via Oracle Community by 807546, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at undefined.TestError3.access$000(TestError3.java:4)
at javax.swing.AbstractButton.init(AbstractButton.java:1930)
at javax.swing.JButton.(JButton.java:109)
at javax.swing.JButton.(JButton.java:64)
at undefined.TestError3$MyButton.(TestError3.java:9)
at undefined.TestError3.(TestError3.java:7)
at undefined.TestError3.main(TestError3.java:16)

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