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Jan Satsatin
422 PointsWhy do we put zero "0" on the "System.exit(0);" statement? Is 0 means yes and 1 is no?
Usage of zero
1 Answer
Steven Parker
231,269 Points
0 means normal. Anything else is a code indicating what kind of error occurred.
Declaration
public static void exit(int status)
Parameters
status -- This is the exit status. By convention, a nonzero status code indicates abnormal termination.
Jan Satsatin
422 PointsJan Satsatin
422 PointsAnything else means we can assign return value to state what error occurred?
A X
12,842 PointsA X
12,842 PointsSteven Parker : Wouldn't we potentially forcing a normal status on something that might be running abnormally otherwise by placing System.exit(0) within our code? Wouldn't it be better to run it and determine what, if any, errors emerge?
Steven Parker
231,269 PointsSteven Parker
231,269 PointsYou would only call exit and pass 0 if you intend for the program to end at that point. That means it's a normal ending.
If the program exits because of some error, it will not reach your normal exit call, and the system will give it a non-zero return code automatically.