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via Stack Overflow by Fryon Alexandra
, 1 year ago
This exception has no message.
via Google Groups by Jan Bösenberg, 7 months ago
via Google Groups by Norbert, 8 months ago
java.lang.NullPointerException: 	at javax.swing.ImageIcon.(Unknown Source)	at JonsCalc.(JonsCalc.java:18)	at JonsCalc.main(JonsCalc.java:38)