Difference between System.exit(int code) and Runtime.getRuntime().exit(int code)

Question

I'm working on the Java batch program that should exit with different codes based on various conditions. The program will be triggered and monitored by CA7 scheduler which will use exit code to trigger other jobs.

Apparently there are couple of ways to exit:

System.exit(int code) 

and

Runtime.getRuntime().exit(int code)

Both of these methods will work, but which one is more appropreate to use?

Answer 1

Look at the source. System calls Runtime:

public static void exit(int status) {
  Runtime.getRuntime().exit(status);
}

Answer 2

There is no real difference, however it is just convention to use System.exit();

Source

The System.exit method is the conventional and convenient means of invoking this method.