JAVA PROGRAMMING

The following JAVA program prompts a user to enter temperatures in degrees Fahrenheit or Celsius. It then converts the entered temperature to the other measurement scale and displays both the entered temperature and the equivalent temperature in the other measurement scale.

import java.util.Scanner;

public class TemperatureConversion

{

public static void main( String [] args )

{

int userChoice = 0; // User selection: 1, 2, 3

float temperatureFahrenheit = 0; // Fahrenheit temperature

float temperatureCelsius = 0; // Celsius temperature

Scanner input = new Scanner( System.in ); // Create a Scanner to obtain user input

while( userChoice != 3 )

{

System.out.print( "Enter 1 to convert F->C, 2 to convert C->F, 3 to quit: " );

userChoice = input.nextInt(); // Read user input

switch( userChoice )

{

case 1: // Convert Fahrenheit to Celsius

System.out.print( "Enter a Fahrenheit temperature: " );

temperatureFahrenheit = input.nextFloat();

temperatureCelsius = 5F/9F * ( temperatureFahrenheit - 32F );

System.out.println( temperatureFahrenheit + " degrees Fahrenheit is " + temperatureCelsius + " degrees Celsius" );

break;

case 2: // Convert Celsius to Fahrenheit

System.out.print( "Enter a Celsius temperature: " );

temperatureCelsius = input.nextFloat();

temperatureFahrenheit = 9F/5F * temperatureCelsius + 32F;

System.out.println( temperatureCelsius + " degrees Celsius is " + temperatureFahrenheit + " degrees Fahrenheit" );

break;

case 3: // End Program

System.out.println( "Bye Bye" );

break;

default: // Invalid Data Entered

System.out.println( "Invalid Data: You must enter 1, 2, or 3" );

}

}

}

}

Re-design this program using methods. Explain the justification behind your re-design and why using methods is advantageous