Question

Which of these is an correct way of defining generic class?

(a) class name(T1, T2, …, Tn) { /* … */ }

(b) class name<T1, T2, …, Tn> { /* … */ }

(c) class name[T1, T2, …, Tn] { /* … */ }

(d) class name{T1, T2, …, Tn} { /* … */ }

This question was posed to me during an interview for a job.

Asked question is from Type Interface in section Interfaces & Packages of Java

Answer 1

The correct choice is (b) class name<T1, T2, …, Tn> { /* … */ }

The best I can explain: The type parameter section, delimited by angle brackets (<>), follows the class name. It specifies the type parameters (also called type variables) T1, T2, …, and Tn.