Question

1 package project1; 2 3 import java.util.*; 4 5 public class Exercise04_21 { 6 7 public static void main(String[] args) { 8 // TODO Auto-generated method stub 9 Scanner input = new Scanner(System.in); 10 System.out.print("Enter a SSN: "); 11 String social = input.nextLine(); 12 13 if (social.length() == 11 && social.charAt(3) == '-' && social.charAt(6) == '- 14 && Character.isDigit(social.charAt(0)) && Character.isDigit(social.charAt(1)) 15 && Character.isDigit(social.charAt(2)) && Character.isDigit(social.charAt(4)) 16 && Character.isDigit(social.charAt(5)) && Character.isDigit(social.charAt(7)) 17 && Character.isDigit(social.charAt(8)) && Character.isDigit(social.charAt(9)) 18 && Character.isDigit(social.charAt(10))) { 19 System.out.println(social + " is a valid social security number"); 20 } else { 21 System.out.println(social + " is an invalid social security number"); 22 } 23 } 24 25 } 26 27} 28

          1 package project1;
2
3 import java.util.*;
4
5 public class Exercise04_21 {
6
7 public static void main(String[] args) {
8 // TODO Auto-generated method stub
9 Scanner input = new Scanner(System.in);
10 System.out.print("Enter a SSN: ");
11 String social = input.nextLine();
12
13 if (social.length() == 11 && social.charAt(3) == '-' && social.charAt(6) == '-
14 && Character.isDigit(social.charAt(0)) && Character.isDigit(social.charAt(1))
15 && Character.isDigit(social.charAt(2)) && Character.isDigit(social.charAt(4))
16 && Character.isDigit(social.charAt(5)) && Character.isDigit(social.charAt(7))
17 && Character.isDigit(social.charAt(8)) && Character.isDigit(social.charAt(9))
18 && Character.isDigit(social.charAt(10))) {
19 System.out.println(social + " is a valid social security number");
20 } else {
21 System.out.println(social + " is an invalid social security number");
22 }
23 }
24
25 }
26
27}
28

1 package project1;
2
3 import java.util.*;
4
5 public class Exercise0421
6
7 public static void main(String[] args)
8 // TODO Auto-generated method stub
9 Scanner input = new Scanner(System.in);
10 System.out.print("Enter a SSN: ");
11 String social = input.nextLine();
12
13 if (social.length() == 11 social.charAt(3) == '-' social.charAt(6) == '-
14 Character.isDigit(social.charAt(0)) Character.isDigit(social.charAt(1))
15 Character.isDigit(social.charAt(2)) Character.isDigit(social.charAt(4))
16 Character.isDigit(social.charAt(5)) Character.isDigit(social.charAt(7))
17 Character.isDigit(social.charAt(8)) Character.isDigit(social.charAt(9))
18 Character.isDigit(social.charAt(10)))
19 System.out.println(social + " is a valid social security number");
20 else
21 System.out.println(social + " is an invalid social security number");
22
23
24
25
26
27
28

Added by Nancy C.

Question

Please give Ace some feedback