// Fig. 11.12: QueueInheritance.java
// Class QueueInheritance definition
// Derived from List
package com.deitel.jhtp2.ch17;

public class QueueInheritance extends List {
   public QueueInheritance() { super( "queue" ); }
   public synchronized void enqueue( Object o )
      { insertAtBack( o ); }
   public synchronized Object dequeue()
      throws EmptyListException { return removeFromFront(); }
   public boolean isEmpty() { return super.isEmpty(); }
   public void print() { super.print(); }
}