title: Method cannot be applied to given types Program09
body: <p>I made this program as a project for one of my classes, and upon compiling it, I get this error: </p>
  
  <blockquote>
    <p>Program09.java:21: error: method calculateCelsius in class Program09 cannot be applied to given types;
               double cTemp = calculateCelsius();
                              ^
      required: int
      found: no arguments
      reason: actual and formal argument lists differ in length
    Program09.java:24: error: method calculateCelsius in class Program09 cannot be applied to given types;
              calculateCelsius();
              ^
      required: int
      found: no arguments
      reason: actual and formal argument lists differ in length
    Program09.java:25: error: method displayResults in class Program09 cannot be applied to given types;
              displayResults();
              ^
      required: int,double
      found: no arguments
      reason: actual and formal argument lists differ in length
    3 errors</p>
  </blockquote>
  
  <p>This is the program below.  Any help would be greatly appreciated!     </p>
  
  <pre><code>import java.util.Scanner;
  
  public class Program09
  {
     public static void main(String[] args)
     {
         int fTemp = getFarenheit();
         double cTemp = calculateCelsius();
        displayInstructions();
        getFarenheit();
        calculateCelsius();
        displayResults();
     }
     public static void displayInstructions()
     {
         System.out.println("This program will convert farenheit to celsius");
         System.out.println("after you enter a farenheit temperature");
     }
     public static int getFarenheit()
     {
         System.out.println("Please enter your temperature below");
         Scanner keyboard = new  Scanner(System.in);
         return keyboard.nextInt();
     }
     public static double calculateCelsius(int farenheit)
     {
         return (5 * (farenheit - 32) / 9.0);
     }
     public static void displayResults(int fTemp, double cTemp)
     {
         System.out.println("Your farenheit temperature is " + fTemp);
         System.out.printf("Your celsius temperature is ", + cTemp);
         System.out.println("Thank you for using the program!");
         System.out.println("The rest of the world needs to conform to imperial measurments, cuz 'merica");
         return;
  
     }       
  }
  </code></pre>