Question

1) ALL IN JAVA THANK YOU

Design and implement a method that invokes other methods (either predefined in the Java API, or your own helper methods). This is method decomposition.

2)

Write or evaluate a comment for a method. Each method should have comments that include its purpose, description of its parameters and return (if any) including data types, and any assumptions.

Answer 1

public class MethodDecompositionExample {

    /**
     * given radius of circle, this method calculates and returns the area of circle
     *
     * @param radius of circle
     * @return area of circle
     */
    public static double circleArea(double radius) {
        // Here we are using method composition by calling Math.pow to calculates radius raised to the power of 2.
        return Math.PI * Math.pow(radius, 2);
    }

    public static void main(String[] args) {
        System.out.println(circleArea(10)); // find and print the area of circle with radius of 10.
    }
}