Question

Need Help a Intro to Java Programming assignment

Design a Area class that has three overloaded static methods areaComputing to calculate the areas of circles, rectangles, and cylinders. Assume that data for circles and cylinders are all doubles and data for rectangles are integers. Code a test program AreaApp by creating at least two objects for each geometric shapes with different hard coded data at your choice for testing.

Answer 1

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Note : - check output images

Program :

Area Class :- Define and declare three areaComputing function to calculate area of rectangle,circle,cylinders

AreaApp main class : -which have main method to call function of Area class

Program : Area.java

class Area
{   //over loading function should have same return type
   public static double areaComputing(double Radius) //Area of Circle
{
double Area=3.14*Radius*Radius; //pi*RadiusRadius
       return Area;
}
public static double areaComputing(int a ,int b) //area of rectangle
{
return a*b;
}
  
   public static double areaComputing(double height ,double radius) //area of cylinder 2*pi*r*(r+h) total surface area
   {
       double Area=2*3.14*radius*(height+radius);
      
       return Area;
   }
  

}

AreaApp.java

class AreaApp //main class
{
   public static void main(String args[])
   {
      
       Area A=new Area(); //first object
       Area B=new Area(); //second objet
      
       System.out.println(A.areaComputing(1.32));
       System.out.println(A.areaComputing(10,20));
       System.out.println(A.areaComputing(10.1,20.9));
      
       System.out.println(B.areaComputing(1.32));
       System.out.println(B.areaComputing(10,20));
       System.out.println(B.areaComputing(10.1,20.9));
      
      
      
   }
}

Output