Answer:
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) 555-5555BsAt4ube4GblQIAAAAASUVORK5CYII= */
 System.out.print("Enter a telephone number as '(XXX) XXX-XXXX': ");
 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);
}
}