You want to create a method that takes in three Mike My OCA Mock

Question 47 / 90: You want to create a method that takes in three character parameters and returns a string.

Which declaration is valid?

A public void doMethod (char a, char b, char c) {String s = null; return s;}

B public String doMethod (Char a, Char b, Char c) {String s = null; return s;}

C public String doMethod (char a, char b, char c) {String s = null; return s;}

D public string doMethod (char a, char b, char c) {String s = null; return s;}

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Explanation:

C. This is a perfectly formed method declaration.

A, B, and D are incorrect.

A is incorrect because the declaration states that no value (void) is to be returned, but a string is.

B is incorrect because the wrapper class for character is Character and not Char.

D is incorrect because the return type of String does not start with a capital letter as it should.

That is, "public string doMethod" should read "public String doMethod".

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Mike Wolf

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