Question

Write a method named area with one double parameter name 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 present an invalid value

Write another overload method with 2 parameters side1 and side2 (both double) where side1 and side2 represent the sides of a rectangle. The method needs to return an area of a rectangle . If either or both parameters is/ are negative return -1.0 indicate an invalid value.

Example output:

area(5.0) should return 78.53975

area(-1) should return -1 since the parameter is nagative

area(5.0, 6.0) should return 30.0 (5 * 6 = 30)

All method need to be defined as public static

Add a main method to your solution code

Please write in Java

Answer 1

Explanation:

Here is the code which has 2 methods, both having the same name area() but different number of parameters.

Code:

public class Main
{
public static double area(double radius)
{
if(radius<0)
return -1.0;
  
return Math.PI*radius*radius;
}
  
public static double area(double side1, double side2)
{
if(side1<0 || side2<0)
return -1.0;
  
return side1*side2;
}
   public static void main(String[] args) {
      
       System.out.println(area(5.0));
       System.out.println(area(-1.0));
       System.out.println(area(5.0, 6.0));
   }
}

Output:

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