ZCW-MetricConversions-BlueJ/ConversionTool.java

public class ConversionTool {

    public static void main(String[] args){}

    public static float CentimetersToInches(float centimeters){
        if (centimeters < 0) {
            return 0;
        } else {
            return (float) (centimeters * 0.3937);
        }
    }

    public static float InchesToCentimeters(float inches){

        if (inches < 0) {
            return 0;
        } else {
            return (float) (inches * 2.54);
        }
    }

    public static float FeetToMeters(float feet){
        if (feet < 0) {
            return 0;
        } else {
            return (float) (feet * 0.3048);
        }
    }

    public static float MetersToFeet(float meters){
        if (meters < 0) {
            return 0;
        } else {
            return (float) (meters * 3.28084);
        }
    }

    public static float CelsiusToFahrenheit(float celsius){
        return celsius * 9 / 5 + 32;
    }

    public static float FahrenheitToCelsius(float fahrenheit){
        return (fahrenheit - 32) * 5 / 9;
    }

    public static float MphToKph(float mph){
        if (mph < 0) {
            return 0;
        } else {
            return (float) (mph * 1.609344);
        }
    }

    public static float KphToMph(float kph){
        if (kph < 0) {
            return 0;
        } else {
            return (float) (kph * 0.6213711922);
        }
    }
}