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via Coderanch by Iain Palmer, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at java.awt.Polygon.(Polygon.java:122)	at java2dgraphics.TriangleTest.(TriangleTest.java:27)	at java2dgraphics.TriangleTest.main(TriangleTest.java:31)