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

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via Coderanch by Shay Gaghe, 1 year ago
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via Oracle Community by 807596, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at java.awt.Container.addImpl(Container.java:345)
at java.awt.Container.add(Container.java:228)
at undefined.GUIManager.(GUIManager.java:20)
at undefined.GUIManager.main(GUIManager.java:26)

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