CODEWITHSUNDEEP
javagenerics
Abs
Abs

Reputation: 478

How can I implement generic method which has generic return type and generic parameter?

I have a generic interface Service:

public interface Service {
    public <T> T callService(T request);
}

I want to modify the callService method such that it can accept a generic parameter and return an instance of a different generic return type. How do I do that, either with the above declaration or by modifying it?

Upvotes: 0

Views: 74

Answers (1)

Evan Frisch
Evan Frisch

Reputation: 1374

A generic is defined in the same way you have that example there, just have a placeholder for the type name. If you are looking to define it to have a generic input parameter type and a different generic return type then you can comma separate them.

public <T, R> R callService(T request);

Upvotes: 3

Related Questions