Probleme Java !

package sessions;

import javax.servlet.http.*;
import java.util.Vector;
import java.util.Enumeration;

public class DummyCart
{
	Vector v = new Vector();
	String submit = null;
	String item = null;
	
	private void addItem(String name)
	{
		v.addElement(name);
	}
	
	private void removeItem(String name)
	{
		v.removeElement(name);
	}
	
	public void setItem(String name)
	{
		item = name;
	}
	
	public void setSubmit(String s)
	{
		submit = s;
	}
	
	public String[] getItems()
	{
		String[] s = new String[v.size()];
		v.copyInto(s);
		return s;
	}
	
	public void processRequest(HttpServletRequest request)
	{
		if(submit == null)
			addItem(item);
		if(submit.equals("add"))
			addItem(item);
		else if(submit.equals("remove"))
			removeItem(item);
		
		reset();
	}
	
	private void reset()
	{
		submit = null;
		item = null;
	}
	
	public static void main(String args[])
	{
   		new DummyCart();
	}
	
}