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617: Mainline

If you want a program to stop when an exception is thrown, you use exit—a class method of the System class, to which you supply an argument of 0:

catch (IOException e) { 
 System.exit(0); 
} 

When executed, the exit statement terminates the program and returns its argument either to the calling program or, if there is no calling program, to the operating system. By general convention, an argument of 0 is taken by the calling program or the operating system to mean that no special action is to be taken.