public class HashTable extends AbstractTable implements Function {
	//Data
	private java.util.Hashtable hashtable;

  	//Constructor
  	public  HashTable() {  hashtable = new java.util.Hashtable(); }
  	
  	//Abstract methods implementation
	public Object get(Object key) { return  hashtable.get(key); }
	public Object put(Object key,Object value) { return  hashtable.put(key,value); }
	public Object remove(Object key) { return  hashtable.remove(key); }
	
	public java.util.Iterator keys() {
       	return hashtable.keySet().iterator();
	}
	
	public java.util.Iterator values() {
		throw new UnsupportedOperationException();
	}
	
  	//Function methods - inherited from class AbstractTable
}