A method that performs the Fahrenheit-to-Celsius conversion

[niloufar]

Hi i have wrote java for my homework, but wanna make sure everything is exactly as my professor requested!
here is his requirements:

- Define a constant for the decimal value used in the meters conversion equation (2 points)
- Define a constant for the decimal value used in the kilograms conversion equation (2 points)
- Define a method that performs the Fahrenheit-to-Celsius conversion (6 points)
o The method should receive the Fahrenheit value as an input
o The method should return the converted Celsius value
o Update your program code to call the method

Additional Notes
- Use only one variable for each value (there are 6 variables in this project)
- Assume the user enters valid data (don't worry about verifying the input values for errors)
- Do not use methods (all statements must be located in the main() method)
- Ensure your source code conforms to the commenting standards for the class

AND here is my Codes:

import java.util.Scanner;
public class UnitConversionTool {
	
	/**
	 * Main method
	 * @param args
	 */
public static void main (String[] args ) {
		
		/**
		 * Create a Scanner
		 */
		Scanner input = new Scanner(System.in);
			
		
		System.out.println("\nAuthor: ");
		System.out.println("Project 1 – Unit Conversion Tool");
		
		/**
		 * Coverts from fahrenheit
		 */
		System.out.print("\nEnter a Fahrenheit temperature: ");
		int Fahrenheit = input.nextInt();
		final double Celsius = FahrenheitToCelsius(Fahrenheit);
		
		/**
		 * Converts from Feet to meters
		 */
		System.out.print("\nEnter a distance in feet: ");
		int Distance = input.nextInt();
		final double Meters = (Distance * 0.3048 );
		
		/**
		 * Converts from Pound to Kilogram
		 */
		System.out.print("\nEnter a weight in pounds: ");
		int Weight = input.nextInt();
		final double Kilograms = (Weight * 0.4536);	
		
		/**
		 * Print the result
		 */
		System.out.println(Fahrenheit +" Fahrenheit is  " +Celsius + " Celsius");
		System.out.println("\n"+Distance +" Distance is "+ Meters+ " Meters");
		System.out.println(Weight + " Weight is "+ Kilograms+ " Kilograms");
				
		}
		
	/**
	 * Converts from Fahrenheit to Celsius
	 * @param temp the temperature in Fahrenheit
	 * @return the temperature in Celsius
	 */
		public static double FahrenheitToCelsius(double temp)
		{
			return (temp - 32 )*5/9;
			
		}
	}

[bob 6]

So... What is your question?

[niloufar]

So... What is your question?

As I said, i'm pretty new to JAVA and need to know if I did all my professor requirements right? His requirements is foreign language to me and not sure if i did what he wanted!!!

I just needed somebody to check my codes with his requirement to make sure i did everything he needed?!!! """ of course to receive full grade :D ""

[Tolls]

You have no constants.

Other than that, does it work?
That's my usual criteria for successful coding.

[niloufar]

You have no constants.

Other than that, does it work?
That's my usual criteria for successful coding.

Yes thanx , it's working....
this doesn't consider as constant? : final double Celsius = FahrenheitToCelsius(Fahrenheit);
or
final double Meters = (Distance * 0.3048 ); ?

[Tolls]

That 0.3048 is what is known in the industry as a Magic Number.
A defined constant (as intended by your task) would be a named attribute that represents that number, which you would then use in place of the number.

[niloufar]

Thank you for all your help; please check my codes and let me know what you think and if the constants are defined correctly!

Thank you agian!

import java.util.Scanner;
public class UnitConversionTool {
	
	/**
	 * Constant Declaration
	 */
	public static final double Meter_To_Feet = 0.3048; // a constant for the decimal value used in the meters
	public static final double Kilogram_TO_Pound = 0.4536; // a constant for the decimal value used in the kilograms
	
	
	/**
	 * Main method
	 * @param args
	 */
public static void main (String[] args ) {
	Scanner input = new Scanner(System.in);  // Create a Scanner
			
		
		System.out.println("\nAuthor: ");
		System.out.println("Project 1 – Unit Conversion Tool");
		
		/**
		 * Converts from fahrenheit
		 */
		System.out.print("\nEnter a Fahrenheit temperature: ");
		int Fahrenheit = input.nextInt();
		double Celsius = FahrenheitToCelsius(Fahrenheit);  //invoke FahrenheitToCelsius method
		
		/**
		 * Converts from Feet to meters
		 */
		System.out.print("\nEnter a distance in feet: ");
		int Distance = input.nextInt();
		double Meters = (Distance * Meter_To_Feet );
		
		/**
		 * Converts from Pound to Kilogram
		 */
		System.out.print("\nEnter a weight in pounds: ");
		int Weight = input.nextInt();
		double Kilograms = (Weight * Kilogram_TO_Pound);	
		
		/**
		 * Print the result
		 */
		System.out.println("\n"+Fahrenheit +" Fahrenheit is  " +Celsius + " Celsius");
		System.out.println(Distance +" Distance is "+ Meters+ " Meters");
		System.out.println(Weight + " Weight is "+ Kilograms+ " Kilograms");
			
		input.close(); // Close Scanner		
		}
		
	/**
	 * Converts from Fahrenheit to Celsius
	 * @param temp the temperature in Fahrenheit
	 * @return the temperature in Celsius
	 */
		public static int FahrenheitToCelsius(int temp)
		{
			return (temp - 32 )*5/9;
			
		}
	}