Generics

Type parameters that let classes and methods work safely with different reference types.

What is Generics in Java?

Generics — Type parameters that let classes and methods work safely with different reference types.

import java.util.List;

class ListReader {
    static <T> T first(List<T> items) {
        return items.get(0);
    }
}

Level: Freelancer · More Java terms at this level

Updated September 27, 2026