Question

Create a Java program that uses methods. In the main method, the program must prompt the user for a Social Security Number in the following format: DDD-DD-DDDD, where D is a digit. The program must call a method called “validate” that must receive the inputted SSN from the main method and decide whether the inputted number is valid and return the decision to the main method. Then, the main method must print the decision.

Answer 1

`Hey,

Note: Brother in case of any queries, just comment in box I would be very happy to assist all your queries

import java.util.Scanner;

public class SSNValidator {
public static boolean validate(String ssn) {
int length = ssn.length();
if(length == 9) {
//all characters must be digits, of the form XXXXXXXXX
for (char s: ssn.toCharArray()) {
if(!Character.isDigit(s)) {
return false;
}
}
} else if(length == 11) {
//should be of the format XXX-XX-XXXX
char chars[] = ssn.toCharArray();
for(int i = 0; i<length; i++) {
if (i==3 || i == 6) {
if(chars[i] != '-') {
return false;
}
} else {
if(!Character.isDigit(chars[i])) {
return false;
}
}
}
} else {
return false;
}
return true;
}

public static void main(String[] args) {
String ssn;
Scanner sc = new Scanner(System.in);
boolean isSSN = false;
  
System.out.println("Enter SSN to validate or 'quit' to Quit the program: ");
ssn = sc.next();
  
isSSN = validate(ssn);
if(isSSN) {
System.out.println(ssn + " is a valid SSN");
} else {
System.out.println(ssn + " is not a valid SSN");
}
  
}
}

Kindly revert for any queries

Thanks.