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

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via Oracle Community by 807553, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at undefined.Test.columnHeaderWidth(Test.java:59)
at undefined.Test.getPreferredWidthForColumn(Test.java:51)
at undefined.Test.(Test.java:35)
at undefined.Test.main(Test.java:83)

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