Java — Which is a valid declaration within an interface?

Question

Solve this multiple-choice question and choose the correct option.

Accepted Answer

Introduction / Context:This question checks the rules for declarations inside an interface in Java. Concept / Approach:Inside interfaces: Variables must be public, static, and final implicitly (even if not written). Methods must be abstract (before Java 8) or default/static (Java 8+). Access modifiers like protected and transient are invalid here. Step-by-Step: Option A: Legal. Interfaces can contain constants (public static final short stop = 23;).Option B: protected not allowed inside interface variables.Option C: transient is not valid for constants.Option D: final void madness(...) is invalid because interface methods cannot be final (they must be overridden unless default/static). Final Answer:public static short stop = 23;

Java — Which is a valid declaration within an interface?

More Questions from Declarations and Access Control

Discussion & Comments