Is there a replacement for EXIT_SUCCESS and EXIT_FAILURE in Java?

问题

In a C program, I generally use EXIT_SUCCESS or EXIT_FAILURE in exit() function to improve clarity and understandability of the program.

But in System.exit() I couldn't use these MACROS.

I can define my own interface as

public interface ReturnValues {
  public int EXIT_SUCCESS = 0;
  public int EXIT_FAILURE = 1;
}

Other than my own implementation, is there any other way in java to use these Macros? (like using predefined library class variables or by implementing predefined interface etc..)

回答1:

No, there is no predefined constants in Java for SUCCESS and FAILURE. Certainly because there might be several different kinds of failures, depending on each specific application.

回答2:

There are no macros in Java. System.exit(0) and System.exit(-1) are plenty readable without getting overly complicated.

回答3:

In java, use enums for this kind of thing:

public enum ReturnValue {
    SUCCESS(0),
    FAILURE(-1);

    private int returnCode;

    private ReturnValue(int returnCode) {
        this.returnCode = returnCode;
    }

    public int getReturnCode() {
        return returnCode;
    }
}

To use:

System.exit(ReturnCode.FAILURE.getReturnCode());

来源：https://stackoverflow.com/questions/7056498/is-there-a-replacement-for-exit-success-and-exit-failure-in-java