比较两个对象 取最大值 并返回对象

Posted 2023-02-05 G_whang

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;

/**
 * 比较两个对象 取最大值 并返回对象
 */
public class Test009 


    public static void main(String[] args) 
        List<Goods> goodsList = getGoodsList();
        Goods goods = goodsList.stream().max((o1, o2) -> 
            BigDecimal bigDecimal1 = o1.getAmount();
            BigDecimal bigDecimal2 = o2.getAmount();
            return bigDecimal1.compareTo(bigDecimal2);
        ).get();
        System.out.println(goods.toString());
    

    public static List<Goods> getGoodsList()
        List<Goods> goods = new ArrayList<>();
        goods.add(new Goods("瓜子",new BigDecimal("20"),"5"));
        goods.add(new Goods("辣条",new BigDecimal("13"),"2"));
        goods.add(new Goods("肥仔快乐水",new BigDecimal("30"),"4"));
        return goods;
    


    public static class Goods

        /**
         * 商品名称
         */
        private String name;

        /**
         * 商品价格
         */
        private BigDecimal amount;

        /**
         * 商品数量
         */
        private String num;

        public Goods() 
        

        public Goods(String name, BigDecimal amount, String num) 
            this.name = name;
            this.amount = amount;
            this.num = num;
        

        public String getName() 
            return name;
        

        public void setName(String name) 
            this.name = name;
        

        public BigDecimal getAmount() 
            return amount;
        

        public void setAmount(BigDecimal amount) 
            this.amount = amount;
        

        public String getNum() 
            return num;
        

        public void setNum(String num) 
            this.num = num;
        
        @Override
        public String toString() 
            return "Goods" + "name=" + name +" "+"amount=" +amount+" "+"num=" +num+ "";