6.6 多对多映射转换

class Member {
    private String mid;
    private String name;
    private Product products[];
    public Member(String mid,String name){
        this.mid = mid;
        this.name = name;
    }
    public void setProducts(Product products[]){
        this.products = products;
    }
    public Product[] getProducts(){
        return this.products;
    }
    public String getInfo(){
        return "【用户信息】 mid=" + this.mid + ",name=" + this.name;
    }
}

class Product {
    private long pid;
    private String title;
    private double price;
    private Member members[];
    public Product(long pid,String title,double price){
        this.pid = pid;
        this.title = title;
        this.price = price;
    }
    public void setMembers(Member members[]){
        this.members = members;
    }
    public Member[] getMembers(){
        return this.members;
    }
    public String getInfo(){
        return "【商品信息】pid=" + this.pid + ",title=" + this.title + ",price=" + this.price;
    }
}

public class HelloWorld {
    public static void main(String[] args){
        // 第一步，根据构造设置对象数据
        Member memA = new Member("mldn","张三");
        Member memB = new Member("mldnjava","李四");
        Product proA = new Product(1L,"Java开发图书",79.8);
        Product proB = new Product(2L,"非常大的B的耳机",2309.9);
        Product proC = new Product(3L,"小米手机",3000.9);
        memA.setProducts(new Product[] {proA,proB,proC});
        memB.setProducts(new Product[] {proA});
        proA.setMembers(new Member[] {memA,memB});
        proB.setMembers(new Member[] {memA});
        proC.setMembers(new Member[] {memA});

        // 第二步:根据要求获取数据
        System.out.println("-----------根据用户查看浏览商品信息-----------------------");
        System.out.println(memA.getInfo());
        for(int x = 0;x < memA.getProducts().length;x++){
            System.out.println("\t|-" + memA.getProducts()[x].getInfo());
        }

        System.out.println("-----------根据商品找到被浏览的记录-----------------------");
        System.out.println(proA.getInfo());
        for(int x = 0;x < proA.getMembers().length;x++){
            System.out.println("\t|-" + proA.getMembers()[x].getInfo());
        }
    }

}