Collapse Debugging FAQ

COLLAPSE CONSOLE DEBUGGING FAQ

Q: How do I interpret this stack trace?
symptom: java.lang.NumberFormatException: For input string: "n"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:492)
at java.lang.Integer.parseInt(Integer.java:527)
at CollapseConsole.promptUser(CollapseConsole.java:143)
at CollapseConsole.updateScreen(CollapseConsole.java:174)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.updateScreen(CollapseConsole.java:175)
at CollapseConsole.run(CollapseConsole.java:97)
at CollapseConsoleTest.play(CollapseConsoleTest.java:37)
... 12 more omitted
A: The test data has won the game and said "n" it did not want to enter a high score,
but your program didn't recognize the win condition and was interpreting the input
as a move.

Also note, the repeated calls to updateScreen() indicate an infinite recursion,
which will eventually overflow the heap.