public Items(int id,String name,String city,int price,int number,String picture)

{

this.id = id;

this.name = name;

this.city = city;

this.picture = picture;

this.price = price;

this.number = number;

}

初始化方法老师那边写了，然后没有显示，java默认是无参的构造方法，然后你要在里面添加一个public Items(int i, String string, String string2, int j, int k, String string3)；方法就可以解决了。