Please help me with my program

Hi, I'm new to programming and I have a simple Java program I am trying to run where I convert Celsius to Fahrenheit and vice versa. My program compiles using jgrasp, but I do not get the correct figures. Can anyone help me out? Below is my driver and class respectively.

Code :

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   import java.util.Scanner;
 
    public class Driver
   {
       public static void main(String args[])
      {
      // Declare variables for user input
 
         double degrees;
         double Celsius;
         String scale;
         String endScale;
         double getCelsius;
         double getFahrenheit;
      // Create a Scanner object to read from the keyboard
         Scanner keyboard = new Scanner (System.in);
 
      // Get the temperature and scale from user
         System.out.print("Enter the temperature: ");
         degrees = keyboard.nextDouble();
         scale = keyboard.nextLine().trim();
 
      // Declare and instantiate an object reference variable
 
         Temperature outsideTemp = new Temperature();
 
      // Set the outside temperature based on the user input
         if (scale.equalsIgnoreCase("C"))
            outsideTemp.setCelsius(degrees);
         else
            outsideTemp.setFahrenheit(degrees);
 
         System.out.print("How would you like the temperature displayed (C or F)?");
         endScale = keyboard.nextLine();
      // Get the scale to display the temperature from the user
 
         if (endScale.equalsIgnoreCase("C"))
            System.out.print("The temperature is " + outsideTemp.getCelsius());
         else
            System.out.print("The temperature is " + outsideTemp.getFahrenheit());
 
      // Display the temperature based on the user's desired scale
         System.out.print(" degrees " + endScale);
      }
 
   }

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Code :

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    public class Temperature
   {
   // Instance variable
      private double degreesKelvin;      // degrees in Kelvin
      double Celsius;      // degrees in Celsius    
      double Fahrenheit;
 
   // Constructor method: initialize degreesKelvin to zero
       public Temperature()
      {
         degreesKelvin = 0;
 
      }
 
   // Convert and save degreesCelius in the Kelvin scale
       public void setCelsius(double Celsius)
      {
         degreesKelvin = Celsius + 273.16;
      }
 
   // Convert degreesKelvin to Celsius and return the value
       public double getCelsius()
      {
         Celsius = degreesKelvin - 273.16;
         return Celsius;
      }
 
   // Convert and save degreesFahrenheit in the Kelvin scale
       public void setFahrenheit(double Fahrenheit)
      {
         degreesKelvin = (( 5 / 9 ) * (Fahrenheit - 32)) + 273.16;
      }
 
   // Convert degreesKelvin to Fahrenheit and return the value
 
       public double getFahrenheit()
      {
         Fahrenheit    = ((degreesKelvin - 273.16) * (9 / 5 )) + 32;
         return Fahrenheit;
      }
 
   }

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It' not necessary to keep track of 3 different temparatures, you only need to keep track of one of them and then you can compute the rest.

Code :

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private double degreesKelvin;
 
public Temperature()
{
     degreesKelvin = 0;
}
 
public void setFahrenheit(double degrees)
{
    degreesKelvin = 5*(degrees - 32)/9 + 273.16;
}
 
public void setCelsius(double degrees)
{
     degreesKelvin = degrees + 273.16;
}
 
public double getFahrenheit()
{
     return 9*(degreesKelvin-273.16)/5+32;
}
 
public double getCelsius()
{
     return degreesKelvin - 273.16;
}

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helloworlds modified code works around this, but based upon your original code make sure to add decimals or casts to all your numbers, otherwise its doing integer math and not floating point math...for example, the following code will print this:
0.0
0.55555

Code :

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	double test = 5/9;
	System.out.println(test);
	test = 5.0/9.0;
	System.out.println(test);

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