Write a program using Joptionpane windows for input and output that allows the u

Question

Write a program using Joptionpane windows for input and output that allows the user to convert a temperature given in degrees from either Celcius to Farenheit or Fahrenheit to Celcius. Use the following formulas: Degree_C = 5(Degree_f-32)/9 Degree_F= (9(Degree_C/5)+32) Prompt user to enter a temperature and either a C or c for Celcius or an F or f for fahrenheit. Convert the temperature to fahrenheit if celcius is entered, or to celcius if farenheit is entered. Display the result in a readable format. If anything other than C,c,F, or f is entered, print and error message and stop. Do not ask the user to reenter the numeric portion of the temperature again, however. After each conversion ask the user to yes or no for input or output.

Explanation / Answer

import java.util.Scanner;

import javax.swing.JOptionPane;

public class TempConversion {

       public static void main(String[] args){

              double result;

              char degree;

              int input;

              input = new Integer(JOptionPane.showInputDialog("Enter a temperature: ")).intValue();

              degree = JOptionPane.showInputDialog("Celsius or Fahrenheit? ").charAt(0);

              if(degree == 'F' || degree == 'f') {

                     result = 5.0/9.0 * (input - 32);

                     JOptionPane.showMessageDialog(null, input + " Fahrenheit is " + result + " Celsius");

                     System.out.println(input + " Fahrenheit is " + result + " Celsius");

              }

              else if(degree == 'C' || degree == 'c') {

                     result = 9.0/5.0 * input + 32;

                     JOptionPane.showMessageDialog(null, input + " Celsius is " + result + " Fahrenheit");

              }

              else {

                     System.out.println("Invalid entry");

              }

       }

}

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