Question

I have this getResult() with slight variation in Input parameter. one Mapvalue as string array for one and string for anor .

But I am seeing a error:
Wont overloading support generics?

public class App 
{

public void getResult(Map<String, String[]> map) {

}
public void getResult(Map<String, String> map) {

}

}

I am seeing this error:Method getResult(Map) has the same erasure getResult(Map) as another method in type App
I guess java is treating both as just Maps and so is this error.

what is best approach to mimic this behaviour?

Thanks

Answer 1

One of the rules of overloading is that methods with type parameters cannot have the same signature after erasure. See the Java Language Specification, §8.4.8.3. The relevant text from the spec is:

It is a compile-time error if a type declaration T has a member method m₁ and there exists a method m₂ declared in T or a supertype of T such that: . . . The signature of m₁ or some method m₁ overrides (directly or indirectly) has the same erasure as the signature of m₂ or some method m₂ overrides (directly or indirectly).