【无标题】

package deno;

import java.util.ArrayList;
import java.util.List;
import java.util.SortedMap;

public class Counter {

    Goods[] goods = new Goods[10];
    int num=10;

    //添加值给字段
    public Counter() {
        this.goods[0] = new Goods(1001, "南德方便面", 1, "香甜可口，耐人寻味");
        this.goods[1] = new Goods(1002, "银梅可乐", 1, "闻着上头，喝啦更上头");
    }
    //判断是否为空字段，不为空则输出
    public void show(){
        for (int i = 0; i <10; i++) {
            if (goods[i]!=null) {
                System.out.println(goods[i]);
            }
        }
    }
}

package deno;

public class CounterTest {
    public static void main(String[] args) {

        //调用对象
        Counter c= new Counter();
        c.show();
    }
}

package deno;

public class Goods {
    //设置字段
    private int id;
    private String goodsName;
    private double price;
    private String desc;

    //有参无参构造方法
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getGoodsName() {
        return goodsName;
    }

    public void setGoodsName(String goodsName) {
        this.goodsName = goodsName;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    public Goods(int id,String goodsName,double price,String desc) {
        super();
        this.id=id;
        this.goodsName=goodsName;
        this.price=price;
        this.desc=desc;

    }
    public Goods() {
        super();
    }

    //toString方法
    @Override
    public String toString() {
        return "Goods{" +
                "id=" + id +
                ", goodsName='" + goodsName + ''' +
                ", price=" + price +
                ", desc='" + desc + ''' +
                '}';
    }
}