请教大神，如何才能调用集合中的引用对象并使用它啊？代码如下

Question

package cn.model;

import cn.action.Drawable;

import java.util.Iterator;
import java.util.ArrayList;
import java.util.List;

public class CompositeShape extends Shape implements Drawable{
private ArrayList shapes;

    public CompositeShape(String color,ArrayList<Shape> shapes){
                    this.color=color;
                    this.shapes=shapes;
    }
    public double getArea(){
                    return 0;
    }
    public void draw(String penType){
                    Shape.Paint paint=new Paint(penType);
                    Iterator<Shape> it1=shapes.iterator();
                    while(it1.hasNext()){
                                            //我想在这里输出对象图形，但是不会调用对象中的数据
                    }
        }

}

Answer 1

 while(it1.hasNext()){
Shape shp = it1.next();
...
}