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dylan
more circles
1 Answer(s)      4 years and 5 months ago
Posted in : Java Beginners


Write an application that uses Circle class you created in the previous assignment.
? The program includes a static method createCircle() that
o reads a radius of a circle from the user
o creates a circle object, and
o returns the object.
? The program creates a circle object by using the above method.
? The program passes the circle object to a static method that prints the circumference and the area of the circle object by using the methods in the object.

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August 17, 2010 at 4:17 PM


Hi Friend,

Try the following code:

import java.util.*;
class Circle{
static double pi=3.14;
double radius;
Circle(){
}
Circle(double radius){
this.radius=radius;
}
public double getRadius(){
return radius;
}
public static Circle createCircle(){
System.out.println("Enter Radius");
Scanner input=new Scanner(System.in);
double r=input.nextDouble();
Circle c=new Circle(r);
return c;
}
public static void calculate(Circle c){
double r=c.getRadius();
double area=pi*r*r;
double circumference=2*pi*r;
System.out.println("Area: "+area);
System.out.println("Circumference: "+circumference);
}
public static void main(String[] args)
{

Circle c=createCircle();
calculate(c);
}
}import java.util.*;
class Circle{
static double pi=3.14;
double radius;
Circle(){
}
Circle(double radius){
this.radius=radius;
}
public double getRadius(){
return radius;
}
public static Circle createCircle(){
System.out.println("Enter Radius");
Scanner input=new Scanner(System.in);
double r=input.nextDouble();
Circle c=new Circle(r);
return c;
}
public static void calculate(Circle c){
double r=c.getRadius();
double area=pi*r*r;
double circumference=2*pi*r;
System.out.println("Area: "+area);
System.out.println("Circumference: "+circumference);
}
public static void main(String[] args)
{

Circle c=createCircle();
calculate(c);
}
}

Thanks


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