In Java, how to iterate on the constants of an interface?

Question

in an interface, I store constants in this way (I\'d like to know what you think of this practice). This is just a dummy example.

interface HttpConstants {
    /         


        

Answer 1

I'd like to know what you think of this practice

Consider using an enum instead of an interface with constants.

enum HttpResultCode {
    HTTP_OK(200),
    HTTP_CREATED(201),
    HTTP_ACCEPTED(202),
    HTTP_NOT_AUTHORITATIVE(203),
    HTTP_NO_CONTENT(204),
    HTTP_RESET(205),
    HTTP_PARTIAL(206);

    private final int code;

    private HttpResultCode(int code) {
        this.code = code;
    }

    public int getCode(int code) {
        return code;
    }

    public static HttpResultCode forCode(int code) {
        for (HttpResultCode e : HttpResultCode.values()) {
            if (e.code == code) {
                return e;
            }
        }

        throw new IllegalArgumentException("Invalid code: " + code);
    }
}