Example 8.32 ValueListIterator Class

package corepatterns.apps.psa.util;

import java.util.List;

public interface ValueListIterator {
    
  public int getSize() 
    throws IteratorException;
    
  public Object getCurrentElement() 
    throws IteratorException;
    
  public List getPreviousElements(int count) 
    throws IteratorException;
    
  public List getNextElements(int count) 
    throws IteratorException;
    
  public void resetIndex()
    throws IteratorException;

  // other common methods as required
  ...
}