Get App

Java: Which statement about Generics and Wildcards is the strongest interview answer?

Difficulty:

Easy

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

Which statement about Generics and Wildcards is the strongest interview answer?

  1. Generics and Wildcards is mostly a naming style choice and has little effect on runtime or design.
  2. Generics add compile-time type safety and reduce unsafe casting.
  3. Generics and Wildcards exists mainly to reduce the number of Java files in a project.
  4. Generics and Wildcards matters only for frontend frameworks, not for core Java applications.

Hint

Start with the core rule behind Generics and Wildcards.

Answer and rationale

Correct answer: B. Generics add compile-time type safety and reduce unsafe casting.

Generics add compile-time type safety and reduce unsafe casting. This is the base concept interviewers commonly test first.

Track: Java