重载

package duixiang;

public class Car {
// 品牌
private String pinpai;

// 读
public String getPinpai() {
return pinpai;
}

// 写
public void setPinpai(String pinpai) {
System.out.println("车的品牌设置为" + pinpai);
this.pinpai = pinpai;
}

// 状态
private String zhuangtai = "静止";

public String getzhuangtai() {
return zhuangtai;
}

// 油量
private double youliang = 0;

public double getYouliang() {
return youliang;
}

// 油箱
private double youxiang;

public double getYouxiang() {
return youxiang;
}

public void setYouxiang(double youxiang) {
this.youxiang = youxiang;
}

// 一次加满
public void jiayou() {
System.out.println("一次加满");
double yici = this.youxiang - this.youliang;
jiayou(yici);
}

// 加油
public void jiayou(double youliang) {
// 油箱容量大于0
if (youxiang <= 0) {
System.out.println("你忘了带油箱");
return;
}
// 加油量大于0
else if (youliang < 0) {
System.out.println("不要偷我的油");
return;

}
// 静止状态才能加油
else if (!zhuangtai.equals("静止")) {
System.out.println("车停了再加油");
return;
}
// 不能超过油箱容量
else if (this.youliang + youliang > this.youxiang) {
System.out.println("油箱已将加满了,不要再加了");

double shengyu = this.youliang;
this.youliang = this.youxiang;
System.out.println("这次加了" + (this.youxiang - shengyu) + "升油");
} else {
this.youliang += youliang;
}
System.out.println("这次加了" + youliang + "升油");
}

//发动
public void fadong() {
if (this.getYouliang() <= 0) {
System.out.println("请加油");
} else if (!this.getzhuangtai().equals("静止")) {
System.out.println("已经发动");
} else {
this.zhuangtai = "发动";
System.out.println("车子发动了");
}
}

private double zongli;

public double getZongli() {
return zongli;
}

//行驶
public void xingshi(double lu,double youhao)
{
//车的状态是发动
if (!this.zhuangtai.equals("发动"))
{
System.out.println("请发动汽车");
}
else
{
//行驶
//double zongli=lu*youhao/100;
double lc=this.youliang*100/youhao;
if(lc<lu)
{
System.out.println("最多行驶"+lc+"公里");
this.zongli+=lc;

this.youliang=0;
this.zhuangtai="静止";
}
else
{
System.out.println("行驶了"+lu+"公里");
this.zongli+=lu;

this.youliang-=lu*youhao/100;

}
this.zhuangtai="静止";
}

//计算总油耗,判断油量
}

public Car() {
System.out.println("默认的构造方法");
}

// 重载
public Car(String pinpai) {
System.out.println("实例化车的品牌为" + pinpai);
this.pinpai = pinpai;
}

}

package duixiang;

public class Test3 {

public static void main(String[] args) {
Car car= new Car();//默认构造方法
car.setPinpai("宝马");
car.xingshi(100, 10);
car.fadong();
System.out.println("车的品牌是"+car.getPinpai()+"车的油量是"+car.getYouliang()+"车的状态是"+car.getzhuangtai());
car.setYouxiang(40);
car.jiayou(10);
car.fadong();
car.xingshi(200, 10);
car.jiayou(20);
car.jiayou(10);
System.out.println("车的品牌是"+car.getPinpai()+"车的油量是"+car.getYouliang()+"车的状态是"+car.getzhuangtai());

}

}