// Simple version of LinkedIntList with the appending add method

public class LinkedIntList {
    
   private ListNode front;
    
   public LinkedIntList() {
      front = null;
   }

    // Adds the given value to the end of the list
   public void add(int value) {
      if (front == null) {
         front = new ListNode(value);
      } else {
         ListNode current = front;
         while(current.next != null) {
            current = current.next;
         }
         current.next = new ListNode(value);
      }
   }
    
   // Prints all the values in the list with each value
   // on its own line
   public void print() {
      ListNode current = front;
      while (current != null) {
         System.out.println(current.data);
         current = current.next;
      }
   }
}