Question

1: (Passing Objects to Methods) From the following UML Class Diagram, define the Circle class in Java. Circle Circle Radius: double Circle() Circle(newRadius: double) getArea(): double setRadius(newRadius: double): void getRadius(): double After creating the Circle class, you should test this class from the main() method by passing objects of this class to a method “ public static void printAreas(Circle c, int times)” You should display the area of the circle object 5 times with different radii.

Answer 1

ANSWER :-

GIVEN THAT :-

public class Circle {

   private double radius;

   public Circle() {

   }

   public Circle(double radius) {
       this.radius = radius;
   }

   public double getArea() {
       return Math.PI * radius * radius;
   }

   public double getRadius() {
       return radius;
   }

   public void setRadius(double radius) {
       this.radius = radius;
   }
   public static void printAreas(Circle c, int times) {
       for (int i = 0; i < times; i++) {
           System.out.println(c.getArea());
       }
   }
   public static void main(String[] args) {
       Circle c1 = new Circle(2.5);
       Circle.printAreas(c1, 1);
       Circle c2 = new Circle(1.5);
       Circle.printAreas(c2, 1);
       Circle c3 = new Circle(2.0);
       Circle.printAreas(c3, 1);
       Circle c4 = new Circle(1.8);
       Circle.printAreas(c4, 1);
       Circle c5 = new Circle(1.0);
       Circle.printAreas(c5, 1);

   }

}

OUTPUT SCREENSHOT :-