Créer un convertisseur de température en Java

package delftstack;

import java.util.*;
public class Temprature_Converter {
  static Scanner sc = new Scanner(System.in); // Scanner Class

  // Celcius to Fahrenheit
  static double Celcius_to_Fahrenheit(double Celcius) {
    double Fahrenheit = (Celcius * 9 / 5) + 32;
    return Fahrenheit;
  }
  // Celcius to Kelvin
  static double Celcius_to_Kelvin(double Celcius) {
    double Kelvin = Celcius + 273.15;
    return Kelvin;
  }

  // Fahrenheit to Celcius
  static double Fahrenheit_to_Celcius(double Fahrenheit) {
    double Celcius = (Fahrenheit - 32) * 5 / 9;
    return Celcius;
  }
  // Fahrenheit to Kelvin
  static double Fahrenheit_to_Kelvin(double Fahrenheit) {
    double Kelvin = (Fahrenheit - 32) * 5 / 9 + 273.15;
    return Kelvin;
  }

  // Kelvin to Celcius
  static double Kelvin_to_Celcius(double Kelvin) {
    double Celcius = Kelvin - 273.15;
    return Celcius;
  }
  // Kelvin to Fahrenheit
  static double Kelvin_to_Fahrenheit(double Kelvin) {
    double Fahrenheit = (Kelvin - 273.15) * 9 / 5 + 32;
    return Fahrenheit;
  }

  // Read the value of temperature given by the user
  static double Input_Temperature(String Temperature) {
    System.out.println("Enter the " + Temperature + " value:");
    double val = sc.nextDouble();
    return val;
  }

  // Print converted value of temperature
  static void Output_Temperature(double Value, String Temperature) {
    System.out.println("The " + Temperature + " value is: " + Value);
  }

  // Driver Method
  public static void main(String args[]) {
    System.out.println("Enter 1 for Celcius to Fahrenheit\nEnter 2 for Celcius to Kelvin\n"
        + "Enter 3 for Fahrenheit to Celcius\nEnter 4 for Fahrenheit to Kelvin\n"
        + "Enter 5 for Kelvin to Celcius\nEnter 6 for Kelvin to Fahrenheit\n7. Exit");
    do {
      System.out.println("\nEnter Your Temperature Choice Number: ");
      int Temprature_Choice = sc.nextInt();
      double Choice_Number = 0;
      switch (Temprature_Choice) {
        case 1:
          Choice_Number = Input_Temperature("Celcius");
          Output_Temperature(Celcius_to_Fahrenheit(Choice_Number), "Fahrenheit");
          break;
        case 2:
          Choice_Number = Input_Temperature("Celcius");
          Output_Temperature(Celcius_to_Kelvin(Choice_Number), "Kelvin");
          break;
        case 3:
          Choice_Number = Input_Temperature("Fahrenheit");
          Output_Temperature(Fahrenheit_to_Celcius(Choice_Number), "Celcius");
          break;
        case 4:
          Choice_Number = Input_Temperature("Fahrenheit");
          Output_Temperature(Fahrenheit_to_Kelvin(Choice_Number), "Kelvin");
          break;
        case 5:
          Choice_Number = Input_Temperature("Kelvin");
          Output_Temperature(Kelvin_to_Celcius(Choice_Number), "Celcius");
          break;
        case 6:
          Choice_Number = Input_Temperature("Kelvin");
          Output_Temperature(Kelvin_to_Fahrenheit(Choice_Number), "Fahrenheit");
          break;
        case 7:
          System.exit(0);
          break;
        default:
          System.out.println("Invalid Input");
      }
    } while (true);
  }
}

Enter 1 for Celcius to Fahrenheit
Enter 2 for Celcius to Kelvin
Enter 3 for Fahrenheit to Celcius
Enter 4 for Fahrenheit to Kelvin
Enter 5 for Kelvin to Celcius
Enter 6 for Kelvin to Fahrenheit
7. Exit

Enter Your Temperature Choice Number:
1
Enter the Celcius value:
50
The Fahrenheit value is: 122.0

Enter Your Temperature Choice Number:
2
Enter the Celcius value:
50
The Kelvin value is: 323.15

Enter Your Temperature Choice Number:
3
Enter the Fahrenheit value:
50
The Celcius value is: 10.0

Enter Your Temperature Choice Number:
4
Enter the Fahrenheit value:
50
The Kelvin value is: 283.15

Enter Your Temperature Choice Number:
5
Enter the Kelvin value:
50
The Celcius value is: -223.14999999999998

Enter Your Temperature Choice Number:
6
Enter the Kelvin value:
50
The Fahrenheit value is: -369.66999999999996

Enter Your Temperature Choice Number:
7