package com.hanqi;public class Car {    //属性  成员变量        //车的颜色    String YanSe;        //车的品牌    String PinPai;        //邮箱容量    double YouXiangRongLiang;        //当前油量    double DangQianYouLiang;            //方法      函数   成员函数    public void jiaYou(double youliang)    {        DangQianYouLiang += youliang;                System.out.println("这次给"+YanSe+"的"+PinPai+"车加了"+youliang+"升油");    }        }

package com.hanqi;public class text {    public static void main(String[] args) {                //构建一个Car的实例，对象                Car xiali = new Car();                        xiali.PinPai = "夏利";                xiali.YanSe = "红色";                xiali.jiaYou(40);//加油    }}