I need some help with some computer science problems. I have the questions and the answers listed below. I also bolded what I think the answer is but I just want to double check. If you can also give me a brief explanation, that would be greatly appreciated. Thanks so much in advance!!

1. Given the following code, what is output by the method call, mystery(6 * 8)?

public static void mystery (int x[]) {

System.out.println("A");

}

public static void mystery (int x) {

System.out.println("B");

}

public static void mystery (String x) {

System.out.println("C");

}

A

B (<-bolded, it's a little hard to see)

C (<-bolded, it's a little hard to see)

CA

CB

-------------------------------------------

Which of the following is true about overloaded methods?

Java cannot use a method's return type to tell two overloaded methods apart.

Java cannot use a method's parameters to tell two overloaded methods apart.

You can only overload methods that have parameters.

All overloaded methods must have different names.

None of the above

---------------------------------

Consider the following methods:

public static double doStuff(int a) { return a/2; } public static double doStuff(double val) { return val/10; }

What is output by the following?

System.out.println(doStuff(5) + doStuff(5.0));

2.00.5

2.50.5

22.5

2.5

5

--------------------------------

Consider the following three classes: Clothing, Socks, and Sweater.

Which of the following keywords allows a child class to access the overridden methods in a parent class?

extends

new

super

this

None of the above

-------------------------------------

Which of the following is true about interfaces:

All methods in an interface must be abstract.

A class can only implement one interface.

An interface can have only non-abstract methods.

Can not contain constants but can have variables.

None of the above.

--------------------------