Java 面向对象 之 对象数组

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/**    知识点： 对象数组        1. 对象数组的使用        2. 对象数组的foreach 增强for循环        3. 可变参数    题目：乘客一次只能带2个箱子免费上飞机    思路：        1. 抽象出类 乘客(Customer)  , 箱子(Box)        2. 乘客和箱子的关系  1对2的关系 Box->Customer*/public class  Array {        public static void main(String[] args) {        //实例化一个乘客        Customer c = new Customer("黎明");        //实例化两个箱子一个装衣服, 一个装书        Box clothBox = new Box("装衣服");        clothBox.setId(1);        clothBox.setWeight(20);        Box bookBox = new Box("装书");        bookBox.setId(2);        bookBox.setWeight(30);        //将箱子添加到乘客        c.addBox(clothBox);        c.addBox(bookBox);        //打印该乘客的信息        System.out.println("乘客姓名: " + c.getName());        System.out.println("箱子编号, 箱子重量, 箱子描述");        Box[] boxes = c.getBoxes();        for (Box box : boxes) {            System.out.println(box.getId() + "," + box.getWeight() + "," + box.getDe ion());        }        //测试可变参数        Box[] boxes2 = { clothBox, bookBox };        c.setBoxes();//不传参数        c.setBoxes(clothBox);//传一个参数        c.setBoxes(boxes2);//传一个数组        boxes = c.getBoxes();        for (Box box : boxes) {            System.out.println(box.getId() + "," + box.getWeight() + "," + box.getDe ion());        }    }}class Customer {        private String name;//乘客名字    private Box[] boxes = new Box[2];//箱子属于乘客, 添加箱子引用    public Customer(String name) {        this.name = name;    }    public String getName() {        return this.name;    }    public void setName(String name) {        this.name = name;    }    public Box[] getBoxes() {        return this.boxes;    }    //乘客携带添加的箱子    //返回值: 如果添加成功返回true 否则false    public boolean addBox(Box box) {        for (int i = 0; i < boxes.length; i++) {            if (boxes[i] == null) {                boxes[i] = box;                return true;            }        }        return false;    }    public void setBoxes(Box... boxes) {        this.boxes = boxes;    }}class Box {    private float weight;//箱子的重量    private int id;//箱子的编号    private String de ion;//描述    public Box(String de ion) {        this.de ion = de ion;    }    public String getDe ion() {        return this.de ion;    }    public void setDe ion(String de ion) {        this.de ion = de ion;    }    public int getId() {        return this.id;    }    public void setId(int id) {        this.id = id;    }    public float getWeight() {        return this.weight;    }    public void setWeight(float weight) {        this.weight = weight;    }}

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