title: Asking for user input with java setters and getters
body: <p>how would i ask the user for the radius? I'm pretty sure it will be an easy fix but i'm just not sure how to do it. Here is my code so far.</p>
  
  <pre><code>import java.util.Scanner;
  public class CircleDriver
  {
  
  
      public static void main(String[] args)
      {
          Scanner input = new Scanner(System.in);
  
  
          Circle circle1 = new Circle();
          circle1.setRadius(20);
          System.out.println("Enter the radius of a circle " + circle1.getRadius());
          System.out.println("Area = " + circle1.calculateArea());
          System.out.println("Diameter = " + circle1.calculateDiameter());
          System.out.println("Circumference = " + circle1.calculateCircumference());
  
  
      }
  
  }
  </code></pre>
  
  <p>Circle class : </p>
  
  <pre><code>public class Circle
  {
  
      private double radius;
      private final double PI = 3.14159;
  
      /**
       * this method calculates the area of the given radius
       * @return
       */
      public double calculateArea() {
  
          double area;
  
          area = (PI * radius * radius);
  
          return area;
      }
      /**
       * this method calculates the diameter of the given radius
       * @return
       */
      public double calculateDiameter() {
  
          double diameter;
  
          diameter = (radius * 2);
  
          return diameter;
  
      }
      /**
       * this method calculates the circumference of the given radius
       * @return
       */
      public double calculateCircumference() {
  
          double circumference;
  
          circumference = (2 * PI * radius);
  
          return circumference;
  
      }
  
      /**
       * this method sets the radius of the object
       * @param radius
       */
  
      public void setRadius(double radius) {
  
          this.radius = radius;
      }
  
      /**
       * this radius returns the radius given
       * @return
       */
      public double getRadius() {
  
          return radius;
      }
  
  }
  </code></pre>