20151013知识体系整理，需与20151011相整合

Car car = new Car("骑士","黑色",60);//按对应格式定义汽车的相关内荣

car.Dangqyl = 10;    //引用Dangqyl  并赋值

car.Jiayou(30);
//car.Youh = 20;
car.Kaiche(100);

//定义属性

//品牌
public String Pinpai;

//颜色
public String Yanse;

//油箱容量
int Youxiangrl;

//当前油量
int Dangqyl;

//实例化
//构造方法
public Car(String pinpai,String yanse,int youxiangrl)//为了区分，将属性第一个字母大写，形参第一个字母小写
{

Pinpai = pinpai;        //this.Pinpai  指向外部的Pinpai

Yanse = yanse;

Youxiangrl = youxiangrl;
}

//加油
public void Jiayou(int Jiayl)
{
//实际加油量
int shijjy = Youxiangrl - Dangqyl;
Dangqyl += Jiayl;
if(Dangqyl >= Youxiangrl)
{
System.out.println("油箱已满，请停止加油！");
Dangqyl = Youxiangrl;
}
else
{
shijjy = Jiayl;
}
System.out.println("加油量 = " + shijjy + "当前油量为：" + Dangqyl);
}

//百公里油耗
public int Youh = 10;

//开车        Luc  公里数
public void Kaiche(int Luc)
{

int You = Youh * Luc / 100;
Dangqyl -= You;
//没油了
if(Dangqyl <= 0)
{
System.out.println("没有油了，请加油后再行驶！");
}
System.out.println("行驶路程 = " + You + "当前油量为：" + Dangqyl);
}