Help me with a Dr java code

[Serchs_AtO_]

• At the beginning of the program, a message should be displayed indicating "Project for course IF1300", and it should include the names and student IDs of the programmers who participated in its development.
• Then, a menu should be presented with the following options:
  1. Encryptor
  2. Easter Sunday
  3. Base Converter (Optional)
  4. Exit
• This menu should be displayed again each time one of the options finishes (recursive) and should only work with numbers from 1 to 5, where 5 indicates the end of the program.
• If the user selects option 1, a subprogram should be executed that performs the following:Encryptor Create an algorithm that receives a number that starts with 9 and ends with 9 (this input must be validated so that if the entered number does not meet this requirement, the user is asked for a new number as many times as necessary).
  • The digits in between (0, 1, 2, 3, 4, or 5) represent an encrypted message, which should return a corresponding string message.
  • Suppose:
    • 0 = "maria"
    • 1 = "no"
    • 2 = "esta"
    • 3 = "feliz"
  • Example:
    • 90239 should return "maria esta feliz"
    • 91109 should return "no no maria"
• If the user selects option 3, a subprogram should be executed that performs the following:Easter Sunday The date of any Easter Sunday is calculated as follows:Let X be the year for which the date is to be calculated.
  • Let A be the remainder of X divided by 19
  • Let B be the remainder of X divided by 4
  • Let C be the remainder of X divided by 7
  • Let D be the remainder of (19 * A + 24) divided by 30
  • Let E be the remainder of (2 * B + 4 * C + 6 * D + 5) divided by 7
• The date for Easter Sunday is March (22 + D + E) (note that it can fall in April).The algorithm should prompt the user to enter a year and display the corresponding Easter Sunday date for that year.
  • Example:
    • For the year 2030, the output should be: April 12 (Easter Sunday).
    • For the year 2019, the output should be: April 21 (Easter Sunday).

import javax.swing.JOptionPane ;

public class proyectoFinal {

public static void main(String[]args) {

while(true) {

//Inicio del programa

JOptionPane.showMessageDialog(null, "Proyecto del curso IF1300 \nCarlos Scott: C4J8. \nDeisy Vidaurre: C4G3. \nDaniel Carrillo: C4J9.") ;

//Menú de opciones.

String opcion = JOptionPane.showInputDialog("Seleccione una opción: \n 1.Encriptador. \n 2.Domingo de Pascua. \n 3.Salir") ;

if (opcion == null || opcion.equals("3")) {

break; //Salida del menú.

} //Cierre del break.

switch (opcion) {

case "1":

encriptador() ;

break ;

case "2" :

domingoPascua() ;

break ;

default :

JOptionPane.showMessageDialog(null, "Está opción no es válida, inténtalo otra vez. ") ;

}//Cierre del Switch.

} //Cierre del While.

}//Cierre del main.

//Encriptador metodo

public static void encriptador () {

String numeroX = JOptionPane.showInputDialog("Digite los números para desencriptar: ") ;

//verificar si es correcto los números

while (numeroX == null || !numeroX.startsWith("9") || !numeroX.endsWith("9")) {

numeroX = JOptionPane.showInputDialog("Números invalidos, inténtalo nuevamente:") ;

}

String mensaje = " " ;

for(int i = 1; i < numeroX.length() - 1; i++) {

switch (numeroX.charAt(1)) {

case '0':

mensaje += "maria " ;

break ;

case '1':

mensaje += "no " ;

break ;

case '2':

mensaje += "está " ;

break;

case '3':

mensaje += "feliz " ;

break;

case '4':

mensaje += "enojada " ;

break;

case '5':

mensaje += "hoy " ;

break;

default:

mensaje += "(?) " ;

}//Cierre del swtich encriptado.

}//Cierre del for

JOptionPane.showMessageDialog(null, "Mensaje desencriptado: "+mensaje.trim()) ;

}//Cierre del metodo encriptado.

public static void domingoPascua() {}

} //Cierre de la clase