Which three are valid method signatures in an interface? private int getArea(); public float getVol(float x); public void main(String [] args); public static void main(String [] args); boolean setFlag(Boolean [] test); ?->(Show Answer!)

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1. Which three are valid method signatures in an interface? private int getArea(); public float getVol(float x); public void main(String [] args); public static void main(String [] args); boolean setFlag(Boolean [] test);

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By: guest on 02 Jun 2017 01.25 am

(2), (3), and (5). These are all valid interface method signatures. (1), is incorrect because an interface method must be public; if it is not explicitly declared public it will be made public implicitly. (4) is incorrect because interface methods cannot be static.

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