NumberFormatException « Development « Java Swing Q&A

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1. Why does this Java code throw a NumberFormatException?    stackoverflow.com

I'm playing around with a GUI Sudoku solver that uses an array of JTextFields (gridArray) for display and an int array (sudokuGrid) for the actual solving. When I run it ...

2. NumberFormatException    coderanch.com

3. NumberFormatException in swings    forums.oracle.com

You get a number format exception when you try and find the numeric value that a String names but the String is invalid for some reason. For instance you might use Integer.parseInt("-1.5"). This will give you a NumberFormatException because this particular method will not work with strings with a dot in them. There are other constructors and methods in Integer, Double, ...