/*
 * File: TemperatureTest.java
 * Author: Java, Java, Java
 * Description:  An application program to test the Temperature class.
 */

import java.io.*;                  // Import the Java I/O classes

public class TemperatureTest
{

    /**
     *  convertStringTodouble() converts a String of the form "54.87" into
     *  its corresponding double value (54.87).
     *  @param s -- stores the string to be converted
     *  @return A double is returned
     */
    public static double convertStringTodouble(String s)
    {
        Double doubleObject = Double.valueOf(s);
        return doubleObject.doubleValue();
    }


    /**
     *   main() reads temperatures from the keyboard and creates an instance
     *    of the Temperature class to convert from Celsius to Fahrenheit and
     *    vice versa.
     */
    public static void main(String argv[]) throws IOException
    {
        BufferedReader input = new BufferedReader    // Handles console input
            (new InputStreamReader(System.in));
        String inputString;                          // inputString stores the input

        Temperature temperature = new Temperature(); // Create a Temperature object
        double tempIn, tempResult;

        System.out.println("This program will convert Fahrenheit to Celsius and vice versa.");

                     // Convert Fahrenheit to Celsius

        System.out.print("Input a temperature in Fahrenheit > ");   // Prompt for Celsius
        inputString = input.readLine();                             // Get user input
        tempIn = convertStringTodouble(inputString);                // Convert to double
        tempResult = temperature.fahrToCels(tempIn);                // Convert to Celsius
        System.out.println(tempIn + " F = " + tempResult + " C ");  // Report the result

                     // Convert Celsius to Fahrenheit

        System.out.print("Input a temperature in Celsius > ");      // Prompt for Celsius
        inputString = input.readLine();                             // Get user input
        tempIn = convertStringTodouble(inputString);                // Convert to double
        tempResult = temperature.celsToFahr(tempIn);                // Convert to Fahrenheit
        System.out.println(tempIn + " C = " + tempResult + " F ");  // Report the result
    } // main()
} // TemperatureTest