Question

In a file Problem1.java implement a static method with the signature:
public static int pow(int x, int n);
Your method should recursively calculate the value of x^n (x raised to the n power). You may assume that x and n are both positive integers and you do not have to error check the parameters.
Write a main method within Problem1.java that tests the method out on a few different values of x and n.

Answer 1

An interface is implemented with the implements keyword. A particular kind of class that only has abstract methods is declared using the interface keyword.

Why implements is used in Java?

The implements keyword in Java can be used to implement an interface. A special form of class called an interface implements a complete abstraction and only includes abstract methods.

The word implements refers to the implementation of an interface. The term interface is used to declare a special type of class that only includes abstract methods. To use an interface's methods, another class must "implement" the interface using the implements keyword (instead of extends ).

A static method in Java is an exclusive method to the class rather than the instance, and it is also referred to as a class method. So you may call the method directly through the class rather to first creating an instance and invoking the function on it.

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