在同一个类的对象中迭代相同的方法

// 迭代器接口
interface Iterator {
    boolean hasNext();
    Object next();
}

// 对象集合类
class ObjectCollection {
    private Object[] objects;
    
    public ObjectCollection(Object[] objects) {
        this.objects = objects;
    }
    
    public Iterator createIterator() {
        return new ObjectIterator();
    }
    
    // 具体迭代器实现
    private class ObjectIterator implements Iterator {
        private int index;
        
        public ObjectIterator() {
            index = 0;
        }
        
        public boolean hasNext() {
            return index < objects.length;
        }
        
        public Object next() {
            if (hasNext()) {
                return objects[index++];
            }
            return null;
        }
    }
}

// 测试代码
public class Main {
    public static void main(String[] args) {
        Object[] objects = { "Object 1", "Object 2", "Object 3" };
        ObjectCollection collection = new ObjectCollection(objects);
        Iterator iterator = collection.createIterator();
        
        while (iterator.hasNext()) {
            Object object = iterator.next();
            // 执行相同的方法操作
            System.out.println(object.toString());
        }
    }
}