Java · Question 21 · Medium
Which of the following statements about interfaces is true in Java 8 and later?
- An interface can have instance fields that each object gets its own copy of
- An interface can contain default methods that have a body
- An interface can have a public constructor
- A class can implement only one interface
Answer and explanation
Answer: B. An interface can contain default methods that have a body
Explanation: Since Java 8, interfaces may define default and static methods with bodies. Interface fields are implicitly public static final, interfaces cannot have constructors, and a class can implement many interfaces.
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