title: how do I use System.out.printf?
body: <p>My teacher wants us to display our values in the format method (at the very bottom) but the problem is we had a sub and she didn't show us how to use it and my teacher is being less than helpful. Any advice or help would be greatly appreciated.</p>
  
  <pre><code>public class SphereCalculations
  {
  public static void main(String[] args)
  {
     //define variables
     double circumference = 0;
     double area = 0;
     double volume = 0;
     double surfacearea = 0;
     double radius = 0;
     Scanner scan = new Scanner (System.in);
     DecimalFormat dFmt = new DecimalFormat("0.0000");
  
     //prompt for radius
     System.out.println("Enter the sphere's radius: ");
     radius = scan.nextDouble();
  
     //calculate values
     circumference = 2 * Math.PI * radius;
     area = Math.PI * (Math.pow(radius, 2));
     volume = ((4 / 3) * Math.PI) * Math.pow(radius, 3);
     surfacearea = (4 * Math.PI) * Math.pow(radius, 2);
  
     //Display values with println and DecimalFormat
     System.out.println("Using Println");
     System.out.println("The radius: " + radius);
     System.out.println("Circumference: " + dFmt.format(circumference));
     System.out.println("Area: " + dFmt.format(area));
     System.out.println("Volume: " + dFmt.format(volume));
     System.out.println("Surface Area: " + dFmt.format(surfacearea));
  
     //Display values with format method
     System.out.printf();
  </code></pre>