Area Calculator

areaCalculator.java

/**
Area Calculator
Write a method named area with one double parameter named radius.

The method needs to return a double value that represents the area of a circle.

If the parameter radius is negative then return -1.0 to represent an invalid value.

Write another overloaded method with 2 parameters x and y (both doubles), where x and y represent the sides of a rectangle.

The method needs to return an area of a rectangle.

If either or both parameters is/are a negative return -1.0 to indicate an invalid value.

For formulas and PI value please check the tips below.

Examples of input/output:

area(5.0); should return 78.53981633974483 or 78.53981

area(-1);  should return -1 since the parameter is negative

area(5.0, 4.0); should return 20.0 (5 * 4 = 20)

area(-1.0, 4.0);  should return -1 since first the parameter is negative



NOTE: All methods need to be defined as public static ​like we have been doing so far in the course.
NOTE: Do not add a  main method to solution code.

**/

public class AreaCalculator {
    // write code here
    public static double area(double radius) {
        return (radius >= 0) ? Math.PI * radius * radius : -1.0;
    }
    
    public static double area(double x, double y) {
        return (x >=0 && y >=0 ) ? x * y : -1.0;
    }
}