Question

I have this question on a homework assignment:

The method foo() defined in the class Quiz has the following signature: public static double foo(double f). What can you say about foo()?

1. It is a class method

2. It is an instance variable

3. It is an instance method

4. It is a class attribute

I am thinking it is a class method because foo() is declared in a class. Is the answer as straight-forward as I think?

Answer 1

The answer is that its a class method

a field or a method declared with static is always an attribute or behavior of the class respectively.

Non-static variables are one per object, where as static variables are one per
class.

static method do NOT have access to the Non-static variables or methods.

static methods and variables can be called using the Class_Name with "." (dot) operator.

Though if the class do NOT have private constructor (Math class has private constructor), then you can also create an instance to class to call the static methods or variables, but thats not the legal way to do it.

You should also remember that, you can call static methods or variables using a null Reference of the class in which they reside…. Yes and it works….