Question 3(7 points) write a Java program that asks the user to enter the curren

Question

Question 3(7 points) write a Java program that asks the user to enter the current temperature from the keyboard. If the entered temperature is in Fahrenheit, then the program should calculate and display the Celsius equivalent to it. If the entered temperature is in Celsius, then your program should calculate and display the Fahrenheit equivalent to it. Your program should have at least two methods, method 1 is called convertToCelsius0, and the other method is called convertToFahrenheit). To convert from Fahrenheit to Celsius, you can use the following equation: celsius 5.0/9.0*(fahrenheit - 32) To convert from Celsius to Fahrenheit, you can use the following equation: Fahrenheit-9.0/5.0 celsius +32

Explanation / Answer

ScreenShot

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Program

//Header file for I/O
import java.text.DecimalFormat;
import java.util.*;
//Converter class
public class Converter {
   //Convert Fahrenheit to Celcius function
   public static double convertToCelcius(double val) {
       return ((5.0/9.0)*(val-32));
   }
   //Convert Celcius to Fahrenheit function
   public static double convertToFahreheit(double val) {
       return ((9.0/5.0)*val)+32;
   }
    //Main method
   public static void main(String[] args) {
       //Scanner to read input
       Scanner sc=new Scanner(System.in);
       //For input
       double in=0;
       //Formatter
       DecimalFormat df=new DecimalFormat("#.##");
       //Prompt user to enter temperature
       System.out.println("Please enter temperature(if fahrenheit put 'k' at the end Otherwise 'c':");
        String input=sc.nextLine();
        //find the last character to detect conversion
        char ch=input.charAt((input.length())-1);
        //convert according to the last character
        if(ch=='f') {
           in=Double.parseDouble(input.replace('f',' '));
           System.out.println(input+"="+df.format(convertToCelcius(in))+"C");
        }
        else if(ch=='F') {
           in=Double.parseDouble(input.replace('F',' '));
           System.out.println(input+"="+df.format(convertToCelcius(in))+"C");
        }
        else if(ch=='c') {
           in=Double.parseDouble(input.replace('c',' '));
           System.out.println(input+"="+df.format(convertToFahreheit(in))+"F");
        }
        else if(ch=='C') {
           in=Double.parseDouble(input.replace('C',' '));
           System.out.println(input+"="+df.format(convertToFahreheit(in))+"F");
        }
        else {
           System.out.println("Entered input is wrong");
        }
      
      
   }

}

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Output

Please enter temperature(if fahrenheit put 'k' at the end Otherwise 'c':
270f
270f=132.22C

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