Chapter 7 #9, p. 387; Programming Exercises; JAVA PROGRAMMING; 8th Edition; Joyc

Question

Chapter 7 #9, p. 387; Programming Exercises; JAVA PROGRAMMING; 8th Edition; Joyce Farrell. THANK YOU!!!

use import javax.swing.JOptionPane THANK YOU!

#9. Write a program that inserts parentheses,a space, and a dash into a string of 10 user-entered numbers to format it as a phone number. For example, 5153458912 became (515) 345-8912. If the user does not enter exactly 10 digits, display an error message. Continue to accept user input until the user enters 999. Save the file as PhoneNumberFormat. java

Explanation / Answer

import java.util.Scanner;

public class PhoneNumberFormat {
   public static void main(String args[]) {

       Scanner scanner = new Scanner(System.in);
       do {
           System.out.print(" Enter the Phone Number :");
           String textPhone = scanner.nextLine();
           if (textPhone.contains("999"))
               break;

           if (textPhone.matches("[0-9]+") && textPhone.length() == 10) {
               System.out.println("phoneNumber : " + "("
                       + textPhone.substring(0, 3) + ") "
                       + textPhone.substring(3, 6) + "-"
                       + textPhone.substring(6, 10));

           } else {

               System.out.println("Error message !");
           }
       } while (true);
       scanner.close();

   }
}

OUTPUT:

Enter the Phone Number :5153458912
phoneNumber : (515) 345-8912

Enter the Phone Number :1235897
Error message !

Enter the Phone Number :999

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