public abstract interface Frobnicate { public void twiddle(String s); } Which is a correct class? - Study24x7
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public abstract interface Frobnicate { public void twiddle(String s); } Which is a correct class?

A

public abstract class Frob implements Frobnicate { public abstract void twiddle(String s) { } }

B

public abstract class Frob implements Frobnicate { }

C

public class Frob extends Frobnicate { public void twiddle(Integer i) { } }

D

public class Frob implements Frobnicate { public void twiddle(Integer i) { } }

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