Can I make a parameter of a method null by default?

Question

I want to manage my exceptions like this :

protected String displayException(Exception e, String specificMessage) {
        String message = (specificMessage == null) ? e.getMessage() : specificString;
        return message;
    }

Do I have an annotation that would allow me to do so (example @Nullable or @Optional)? And if yes, in which library can I find it (example @Nullable is in the Spring library and in the Jetbrains library)

In Java single way is using method overloading. protected String displayException(String specificMessage){displayException(null,specificMessage);} — KreminT, Nov 13 '20 at 17:02

score 1 · Answer 1 · answered Nov 13 '20 at 16:59

1

You can overload your method:

protected String displayException(Exception e) {
    return displayException(e, null)
}

answered Nov 13 '20 at 16:59

Jens

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Yes it's my second option I was just wondering if java 8 had an annotation for this kind of problem. – Guillaume Gaujac Nov 13 '20 at 17:04
@GuillaumeGaujac No there isn't. And I think there is no need for it. – Jens Nov 13 '20 at 17:05

Can I make a parameter of a method null by default?

1 Answers1