Lambda and Functional Interfaces

Question 1

Supplier<T> is a functional interface in Java 17.</T>

Answer 1

True

Question 2

The return type of the get() method in Supplier<T> is always void.</T>

Answer 2

False – The return type is T, representing a value of any type.

Question 3

The get() method in Supplier<T> requires exactly one parameter.</T>

Answer 3

False – The get() method takes zero parameters.

Question 4

Supplier<T> can be used to supply values on demand.</T>

Answer 4

True

Question 5

Supplier<T> was introduced in Java 17.</T>

Answer 5

False – Supplier<T> was introduced in Java 8.</T>