Calling a method within Main

Question

I'm trying to call a method from outside of the main method and I'm stumped on how to go about doing it. I may be going about this the wrong way. For instance, I'd like the user to enter in a temperature in Fahrenheit and then call the fahrenheitToCelsius method to do the conversion and return the converted temperature.

Here is what I have so far:

import java.util.Scanner;

public class Converter {

// conversions
private static final double GRAMS_PER_OUNCE = 28.3495;
private static final double CENTIMETERS_PER_FEET = 30.48;

public static double fahrenheitToCelsius (double f) {

    return (f - 32) / 1.8;
}

public static double feetToCentimeters (double feet) {

    return feet * CENTIMETERS_PER_FEET;
}

public static double ouncesToGrams (double ounces) {

    return ounces * GRAMS_PER_OUNCE;
}

public static void main(String[] args) {

    Scanner in = new Scanner(System.in);

    System.out.println("Enter a number in Fahrenheit: ");
    System.out.print(in.nextDouble());

}
}

I've tried what Bejasc has suggested but it's throwing a "cannot find symbol" error on var. — Matt Coombs, Sep 21 '17 at 00:38
@ScaryWombat I suggest you give this page a read https://stackoverflow.com/help/be-nice — Bejasc, Sep 21 '17 at 00:58
@Bejasc Yes you are right, but I also suggest that you not waste peoples time by posting wrong answers when there are adequate correct duplicate answers — Scary Wombat, Sep 21 '17 at 01:00
@ScaryWombat thanks for the tips, I'll keep that in mind for future questions. — Bejasc, Sep 21 '17 at 01:05

score 1 · Answer 1 · edited Sep 21 '17 at 01:20

1

public static void main(String[] args) {

   Scanner in = new Scanner(System.in);

   System.out.println("Enter a number in Fahrenheit: ");
   double far = in.nextDouble();
   double cel = fahrenheitToCelsius (far); 
   System.out.println (cel); 
}

Like this?

edited Sep 21 '17 at 01:20

Scary Wombat

44,617
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answered Sep 21 '17 at 00:27

Kattie.S

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This is effectively a duplicate of my earlier answer above. Could you explain what your answer does differently? – Bejasc Sep 21 '17 at 00:34
@Bejasc I guess it compiles for a start – Scary Wombat Sep 21 '17 at 00:49
1

@Bejasc i believe you do not need the System.out.print(in.nextDouble()); .... but could be wrong :) – Kattie.S Sep 21 '17 at 00:56
1

@ScaryWombat You might find this helpful https://stackoverflow.com/help/be-nice – Bejasc Sep 21 '17 at 00:58
@Kattie Not only *not needed* but will not even compile – Scary Wombat Sep 21 '17 at 01:07
@ScaryWombat thanks – Kattie.S Sep 21 '17 at 01:08

Calling a method within Main

1 Answers1