java.lang.NumberFormatException: null

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You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

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Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

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via Oracle Community by 807593, 1 year ago
via Oracle Community by 807605, 3 months ago
via Oracle Community by 807605, 3 months ago
via Google Groups by Gordon Hollenbeck, 1 month ago
java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:382)
at java.lang.Integer.parseInt(Integer.java:463)
at undefined.assignment2.paint(assignment2.java:13)
at sun.awt.RepaintArea.paint(RepaintArea.java:298)
at sun.awt.windows.WComponentPeer.handleEvent(WComponentPeer.java:196)
at java.awt.Component.dispatchEventImpl(Component.java:2663)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)

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