/* RetroArrayList.java provides a 1.1 version of ArrayList
 *  it implements some of the Java 1.2 List interface
 * Author: Charles Hoot, for Hands On Java.
 * Date:   July 2000
 *
 * delegates methods to encapsulated vector which uses
 * an array based implementation of a list
 */

import java.util.*;

public class RetroArrayList extends Object {
	
	private Vector data;
	
	public RetroArrayList() {
		data = new Vector();
	}
	
	public RetroArrayList(int initialSize){
		data = new Vector(initialSize);
	}
	
	public void add(int index, Object element) {
		data.insertElementAt( element, index);
	}
	
	public boolean add(Object o) {
		data.addElement(o);
		return true;
	}
	
	public void clear() {
		data.clear();
	}
	
	public Object clone () {
		return data.clone();
	}
	
	public boolean contains(Object elem){
		return data.contains(elem);
	}
	
	public int indexOf(Object elem){
		return data.indexOf(elem);
	}
	
	public int lastIndexOf(Object elem){
		return data.lastIndexOf(elem);
	}
	
	
	public void trimToSize(){
		data.trimToSize();
	}
	
	public void ensureCapacity(int minCapacity){
		data.ensureCapacity(minCapacity);
	}
	
	public int size(){
		return data.size();
	}
	
	public boolean isEmpty(){
		return data.isEmpty();
	}
	
	public Object get(int index){
		return data.elementAt(index);
	}
	
	public Object set(int index, Object element){
		Object previous = data.elementAt(index);
		data.setElementAt( element, index);
		return previous;
	}
                  
    public Object remove(int index){
		Object previous = data.elementAt(index);
		data.removeElementAt( index);
		return previous;
	}
	
	public int capacity() {
		return data.capacity();
	}
	
}