Single Responsability Principle

UserValidator.java

@@ -0,0 +1,33 @@
+
+import bankapplication.UserDetails;
+
+public class UserValidator {
+    boolean flag = false;
+
+    public boolean isValidUserAge(UserDetails usterdetails, int age) {
+
+       flag=true;  // Validating Age
+        while(flag) {
+        System.out.println("Enter your Age :");
+
+        if(age >=18)
+        {
+            usterdetails.setAge(age);
+            flag=false;
+        }
+        else if((age>=1) && (age<=17))
+        {
+            System.out.println("You're in under 18, so not eligible to create Bank Account. please Contact You're nearest branch.\n************ Thank you for using our service! Have a GREAT DAY **************");
+
+        }
+        else
+        {
+            flag=true;
+            //throw new InvalidAgeException("Please provide the correct age.\n");
+        }
+
+
+    }
+    return flag;
+}   
+}