Java Examples: Validate a SSN without using loops

Question:

Looking for a program to validate a SSN without using loops.

A valid input would be: 123-45-6789

Answer:

See example.

Code:

import java.util.*;
 
public class SSN {
   public static void main(String args[]){
 
      boolean valid = false;
 
      System.out.print("Enter SSN: ");
      Scanner sc = new Scanner(System.in);
      String ssn = sc.next();
      System.out.println("Input: "+ssn);
 
      if(ssn.length()==11) {
         if( (ssn.charAt(3)=='-') & (ssn.charAt(6)=='-') ) {
            String str = ssn.replaceAll("-", "");
            if (str.matches("[0-9]+") & str.length()==9) {
               valid = true;
            }
         }
      }
 
      System.out.println("valid: " + valid);
   }
}

Output:

$ java SSN 
Enter SSN: 123-12-1234
Input: 123-12-1234
valid: true

$ java SSN 
Enter SSN: 123-123-123
Input: 123-123-123
valid: false

$ java SSN 
Enter SSN: 123-12-123a
Input: 123-12-123a
valid: false