Question

Please answer with a Java code.

Every circle has a center and a radius. Given the radius, we can determine the circle’s area and circumference. Given the center, we can determine its position in the x-y plane. The center of a circle is a point in the x-y plane. Design the class Circle that can store the radius and center of the circle. Because the center is a point in the x-y plane and you designed the class to capture the properties of a point in Programming Exercise 3, you must derive the class Circle from the class Point. You should be able to perform the usual operations on a circle, such as setting the radius, printing the radius, calculating and printing the area and circumference, and carrying out the usual operations on the center.

Thank you!!

Answer 1

//circle.java

import java.util.Scanner;

public class circle extends point {

   public int radius;
   /**
   * @param args
   */
   public static void main(String[] args) {
       // TODO Auto-generated method stub
      
       circle c=new circle();
       Scanner in = new Scanner(System.in);
      
       System.out.println("Enter the x,y coordinate of the Circle ");
       c.x=in.nextInt();
       c.y=in.nextInt();
      
       System.out.println("Enter the radius of the Circle ");
       c.radius=in.nextInt();
      
       double area= 3.14*(c.radius)*(c.radius);
       double circumference=6.28*(c.radius);
      
       System.out.println("Area of Circle = "+area+" sq.unit");
       System.out.println("Circumference of Circle = "+circumference+" unit");
      
       System.out.println("Centre of Circle is x="+c.x+" y="+c.y);
       System.out.println("Radius of Circle r ="+c.radius);
      
      
   }

}

//point.java

public class point {

   /**
   * @param args
   */
  
   public int x;
   public int y;
  
}

//output