Java Design Patterns Decorator

public abstract class Tea {  
   boolean teaIsSteeped; 
   
   public abstract void steepTea();
}

public class TeaLeaves extends Tea {  
   public TeaLeaves() {
       teaIsSteeped = false;
   }
   
   public void steepTea() {
       teaIsSteeped = true;
       System.out.println("tea leaves are steeping");
   }
}

import java.util.ArrayList;
import java.util.ListIterator;


public class ChaiDecorator extends Tea {
    private Tea teaToMakeChai;
    private ArrayList chaiIngredients = new ArrayList();
    
    public ChaiDecorator(Tea teaToMakeChai) {
        this.addTea(teaToMakeChai);
        chaiIngredients.add("bay leaf");
        chaiIngredients.add("cinnamon stick");
        chaiIngredients.add("ginger");
        chaiIngredients.add("honey");
        chaiIngredients.add("soy milk");
        chaiIngredients.add("vanilla bean");
    }


    private void addTea(Tea teaToMakeChaiIn) {
        this.teaToMakeChai = teaToMakeChaiIn;
    }
    
    public void steepTea() {
        this.steepChai();
    }


    public void steepChai() {
        teaToMakeChai.steepTea();
        this.steepChaiIngredients();
        System.out.println("tea is steeping with chai");
    }    
    
    public void steepChaiIngredients() {
        ListIterator listIterator = chaiIngredients.listIterator();
        while (listIterator.hasNext()) {
            System.out.println(((String)(listIterator.next())) + 
                                         " is steeping");
        }
        System.out.println("chai ingredients are steeping");
    }      
}

class TestChaiDecorator {            
    
   public static void main(String[] args) {
       Tea teaLeaves = new TeaLeaves();
       Tea chaiDecorator = new ChaiDecorator(teaLeaves);
       chaiDecorator.steepTea();
   }
}

tea leaves are steeping
bay leaf is steeping
cinnamon stick is steeping
ginger is steeping
honey is steeping
soy milk is steeping
vanilla bean is steeping
chai ingredients are steeping
tea is steeping with chai