public class Circle private static int instance..nt= 0; private double radius; p

Question

public class Circle private static int instance..nt= 0; private double radius; public static int getInstanceCnt() return Circle.instanceCnt: private static void setInstanceCnt(int insCnt) SArcle.instance..nt. ns.cns.; public Circle() public Circle(double newRadius) Circle.setInstanseCnt (Cirsle.getInstanceCnt) this.setRadius (newRadius); 1); public Circle(Circle guest) public double getRadius () return this.radius; private void setRadius (double radius) if (radius 0) this. radius = radius; else this.radius0 public void resize(double newRadius) this.setRadius (newRadius); public Circle clone ) return new Circle(this.getRadius )) public boolean equals (Circle guest) return guest.getRadius ( this.getRadius); public void print System.out.print ("The circle's radius is "+ this.getRadius));

Explanation / Answer

Note : Could you please check the output .If you required any changes Just intimate.I will modify it.Thank You.

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Circle.java

public class Circle {
//Declaring constants
private final double PI = 1.14159;
private final String UNITS = "cm";

//Declaring instance variables
private double radius;

//Zero argumented constructor
public Circle() {
this(0.0);
}

//Parameterized constructor
public Circle(double radius) {
setRadius(radius);
}

//Copy Constructor
public Circle(Circle c) {
this(c.getRadius());
}

//getters and setters
public double getRadius() {
return radius;
}

public void setRadius(double radius) {
if (radius > 0.0)
this.radius = radius;
else
this.radius = radius;
}

//This method will calculate the area of the circle
public double area() {
return PI * radius * radius;
}

//This method will display the area of the circle along with the units
public void print() {

System.out.println("The radius of the circle is " + radius + UNITS);
}

}

_____________________

CircleDriver.java

import java.util.Scanner;

public class CircleDriver {

public static void main(String[] args) {

// Declaring variables
double radius;

/*
* Creating an Scanner class object which is used to get the inputs
* entered by the user
*/
Scanner sc = new Scanner(System.in);

// Getting the input entered by the user
System.out.print("Enter the radius of Circle#1:");
radius = sc.nextDouble();

//Creating an Circle class object the user entered input as argument
Circle c = new Circle(radius);

// Displaying the output
c.print();

System.out.printf("The Area of Circle#1:%.2f ", c.area());

// Getting the input entered by the user
System.out.print("Enter the radius of Circle#2:");
radius = sc.nextDouble();

//Creating an Circle class object the user entered input as argument
Circle c1 = new Circle(radius);

//calling the copy constructor
Circle c2 = c1;

// Displaying the output
c2.print();

System.out.printf("The Area of Circle#2:%.2f ", c.area());

}

}

___________________

Output:

Enter the radius of Circle#1:3.5
The radius of the circle is 3.5cm
The Area of Circle#1:13.98
Enter the radius of Circle#2:4.5
The radius of the circle is 4.5cm
The Area of Circle#2:13.98

________________Thank You

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