Write an application that inputs a telephone number as a string in the form (555) 555-5555. The application should use String method split to extract the area code as a token, the first three digits of the phone number as a token and the last four digits of the phone number as a token. The seven digits of the phone number should be concatenated into one string. Both the area code and the phone number should be printed. Remember that you will have to change deliminator characters during the tokenization process.

See explaination

Explanation:

// File: TelephoneNumber.java

import java.util.Scanner;

public class TelephoneNumber

{

public static void main(String[] args)

{

Scanner input = new Scanner(System.in);

String inputNumber;

String tokens1[];

String tokens2[];

String areaCode;

String firstThree;

String lastFour;

String allSeven;

String fullNumber;

/* input a telephone number as a string in the form (555) 555-5555BsAt4ube4GblQISUVORK5CYII= */

System.out.print("Enter a telephone number as '(XXX) XXX-': ");

inputNumber = input.nextLine();

System.out.println();

/* use String method split */

tokens1 = inputNumber.split(" ");

/* extract the area code as a token */

areaCode = tokens1[0].substring(1, 4);

/* use String method split */

tokens2 = tokens1[1].split("-");

/* extract the first three digits of the phone number as a token */

firstThree = tokens2[0];

/* extract the last four digits of the phone number as a token */

lastFour = tokens2[1];

/* concatenate the seven digits of the phone number into one string */

allSeven = firstThree + lastFour;

/* concatenate both the area code and the seven digits of the phone number into one full string separated by one space */

fullNumber = areaCode + " " + allSeven;

/* print both the area code and the phone number */

System.out.println("Area code: " + areaCode);

System.out.println("Phone number: " + allSeven);

System.out.println("Full Phone number: " + fullNumber);

}

}

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