Constant methods in Java

[Raffaello Giulietti]

Hello,

I don't get why the author of myMethod() would/should be interested in 
forcing the caller of the method to declare the variable b to be final.
Stated otherwise, what is the problem addressed by this suggestion?
Have you some specific case in mind?


Greetings
Raffaello


On 2022-02-02 20:27, Alberto Otero Rodríguez wrote:
> I have a suggestion. I think it would be interesting creating constant methods in Java.
> 
> I mean methods declared like this:
> 
> public const String myMethod() {
>    String a = "a";
>    a = a + "b";
>    return a;
> }
> 
> So that the response of the method is forced to be assigned to a final variable.
> 
> This would be ok:
> final String b = myMethod();
> 
> But this would throw a compilation error:
> String c = myMethod();
> 
> What do you think? It's just an idea.