// Jeremy Lipschutz
// Short program showing the flexibility of using interfaces

public class ListClient {
   public static void main(String[] args) {      
      IntList list1 = new ArrayIntList();
      processList(list1);
      
      // Just like an HDMI device we can unplug a TV cable box
      // and plug in a DVDPlayer!
      list1 = new LinkedIntList();
      
      // this line would create an error
      // list1 = new IntList();
            
      IntList list2 = new LinkedIntList();
      processList(list2);
   }
   
   // By creating an IntList interface, we can make a method
   // that can take in either an ArrayIntList or LinkedIntList
   public static void processList(IntList list) {
      list.add(18);
      list.add(27);
      list.add(93);
      System.out.println(list);
      list.remove(1);
      System.out.println(list);
   }
  
}