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which three can be included in an interface declaration?

A.	void showmessage(); public void showmessage(); private void showmessage();	B.	public void showmessage(); static void showmessage(); abstract void showmessage();
C.	void showmessage(); public void showmessage(); abstract void showmessage();	D.	static void showmessage(); private void showmessage(); abstract void showmessage();

Answer and Explanation

Answer:void showmessage();
public void showmessage();
abstract void showmessage();

Explanation:
all the methods in an interface are by default public abstract, even if you don’t specify by default it will be public abstract

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