                        課程
                    
                        /后端開(kāi)發(fā)
                        
                            /Java
                        
                        /Java入門(mén)第二季

幫忙看一下我寫(xiě)的有沒(méi)有問(wèn)題謝謝

車(chē)類(lèi)

package?com.DiDiCar;

public?abstract?class???Car?{
?????private?String?carName;?????//車(chē)名
?????private?int?carId;?????????????????//車(chē)ID???
?????private?float?price;?????????????????//租價(jià)
?????private?float?carCargo;?????????//載貨量
?????private?int?carPerson;?????????//載客量
?????
?????
?????public?abstract?void?showInfo();????//?顯示車(chē)信息
?????
?????
?????
	public?String?getCarName()?{
		return?carName;
	}
	public?void?setCarName(String?carName)?{
		this.carName?=?carName;
	}
	public?int?getCarId()?{
		return?carId;
	}
	public?void?setCarId(int?carId)?{
		this.carId?=?carId;
	}
	public?float?getPrice()?{
		return?price;
	}
	public?void?setPrice(int?price)?{
		this.price?=?price;
	}
	public?float?getCarCargo()?{
		return?carCargo;
	}
	public?void?setCarCargo(int?carCargo)?{
		this.carCargo?=?carCargo;
	}
	public?int?getCarPerson()?{
		return?carPerson;
	}
	public?void?setCarPerson(int?carPerson)?{
		this.carPerson?=?carPerson;
	}
?????


	
?????
?????
}

汽車(chē)類(lèi)

package?com.DiDiCar;

public?class?Automobile?extends?Car?{
????private?String?carName;?????//車(chē)名
????private?int?carId;?????????????????//車(chē)ID???
????private?float?price;?????????????????//租價(jià)
????private?int?carPerson;?????????//載客量
????
	public?Automobile(String?carName,?int?carId,?int?price,?int?carPerson)?{
		super();
		this.carName?=?carName;
		this.carId?=?carId;
		this.price?=?price;
		this.carPerson?=?carPerson;
	}
	
	

	@Override
	public?void?showInfo()?{
		//?TODO?Auto-generated?method?stub
		System.out.println(getCarId()+"."+'\t'?+?getCarName()?+?'\t'?+getPrice()?+"元/天"?+?'\t'?+?"載人："+getCarPerson()?+"人");
		
	}



	public?String?getCarName()?{
		return?carName;
	}

	public?void?setCarName(String?carName)?{
		this.carName?=?carName;
	}

	public?int?getCarId()?{
		return?carId;
	}

	public?void?setCarId(int?carId)?{
		this.carId?=?carId;
	}

	public?float?getPrice()?{
		return?price;
	}

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

	public?int?getCarPerson()?{
		return?carPerson;
	}

	public?void?setCarPerson(int?carPerson)?{
		this.carPerson?=?carPerson;
	}

????
????
????
}

貨車(chē)類(lèi)

package?com.DiDiCar;

public?class?Truck?extends?Car?{
????private?String?carName;?????//車(chē)名
????private?int?carId;?????????????????//車(chē)ID???
????private?float?price;?????????????????//租價(jià)
????private?float?carCargo;?????????//載貨量
????
	public?Truck(String?carName,?int?carId,?int?price,?int?carCargo)?{
		super();
		this.carName?=?carName;
		this.carId?=?carId;
		this.price?=?price;
		this.carCargo?=?carCargo;
	}
	
	
	
	@Override
	public?void?showInfo()?{
		//?TODO?Auto-generated?method?stub
		System.out.println(getCarId()+"."+'\t'?+?getCarName()?+?'\t'?+getPrice()?+"元/天"?+?'\t'?+?"載貨："+getCarCargo()?+"噸");
	}



	public?String?getCarName()?{
		return?carName;
	}
	public?void?setCarName(String?carName)?{
		this.carName?=?carName;
	}
	public?int?getCarId()?{
		return?carId;
	}
	public?void?setCarId(int?carId)?{
		this.carId?=?carId;
	}
	public?float?getPrice()?{
		return?price;
	}
	public?void?setPrice(int?price)?{
		this.price?=?price;
	}
	public?float?getCarCargo()?{
		return?carCargo;
	}
	public?void?setCarCargo(int?carCargo)?{
		this.carCargo?=?carCargo;
	}
????
????

????
}

皮卡車(chē)類(lèi)

package?com.DiDiCar;

public?class?Pickup?extends?Car?{

????private?String?carName;?????//車(chē)名
????private?int?carId;?????????????????//車(chē)ID???
????private?float?price;?????????????????//租價(jià)
????private?float?carCargo;?????????//載貨量
????private?int?carPerson;?????????//載客量
????
????
	public?Pickup(String?carName,?int?carId,?int?price,?int?carCargo,
			int?carPerson)?{
		super();
		this.carName?=?carName;
		this.carId?=?carId;
		this.price?=?price;
		this.carCargo?=?carCargo;
		this.carPerson?=?carPerson;
	}
	
	
	
	@Override
	public?void?showInfo()?{
		//?TODO?Auto-generated?method?stub
		System.out.println(getCarId()+"."+'\t'?+?getCarName()?+?'\t'?+getPrice()?+"元/天"?+?'\t'?+?"載人："+getCarPerson()?+"人"+"載貨："+getCarCargo()?+"噸");
	}



	public?String?getCarName()?{
		return?carName;
	}
	public?void?setCarName(String?carName)?{
		this.carName?=?carName;
	}
	public?int?getCarId()?{
		return?carId;
	}
	public?void?setCarId(int?carId)?{
		this.carId?=?carId;
	}
	public?float?getPrice()?{
		return?price;
	}
	public?void?setPrice(int?price)?{
		this.price?=?price;
	}
	public?float?getCarCargo()?{
		return?carCargo;
	}
	public?void?setCarCargo(int?carCargo)?{
		this.carCargo?=?carCargo;
	}
	public?int?getCarPerson()?{
		return?carPerson;
	}
	public?void?setCarPerson(int?carPerson)?{
		this.carPerson?=?carPerson;
	}
????
????
}

實(shí)現(xiàn)

package?com.DiDiCar;

import?java.util.Scanner;

public?class?Realize?{

	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub
		
		//創(chuàng)建車(chē)輛對(duì)象數(shù)組，分別指向不同類(lèi)型車(chē)輛
		Car[]?car?={new?Automobile("奧迪A4",1,500,4),new?Automobile("馬自達(dá)6",2,400,4),new?Pickup("皮卡雪6",3,450,2,4),new?Automobile("金龍??",4,800,20),new?Truck("松花江",5,400,4),new?Truck("依維河",6,1000,20)};
		Scanner?input?=?new?Scanner(System.in);
		System.out.println("*******************歡迎使用滴滴租車(chē)系統(tǒng)：*******************");
		
	//顯示租車(chē)信息	
		while?(true)
		{
			System.out.println("您是否要租車(chē)：1?是?0?否");
			int?choise?=?input.nextInt();
			if?(choise?==?0)
			{
				System.out.println("感謝您使用滴滴租車(chē)系統(tǒng)，再見(jiàn)！");?
				break;
			}
			else?if?(choise?==?1)????????????????????????????????????//進(jìn)入系統(tǒng)
			{
				System.out.println("您可租車(chē)的類(lèi)型及其價(jià)目表：");
????????????????System.out.println("序號(hào)"?+?'\t'?+?"汽車(chē)名稱(chēng)"?+?'\t'?+?"租金"?+?'\t'?+"容量");
				for(int?i=0;i<car.length;i++)
				{
					car[i].showInfo();???????????????????????????????//顯示車(chē)的信息
				}
		????????break;		
			}
			else???//輸入錯(cuò)誤，從新輸入
			{
				System.out.println("您的輸入信息有誤，請(qǐng)從新輸入：");
			}
		}
			
	//輸入租車(chē)數(shù)量、種類(lèi)、日期	
			System.out.println("請(qǐng)輸入您要租汽車(chē)的數(shù)量：");
			int?num?=?input.nextInt();?????????????????????????//租車(chē)數(shù)量
			if(num>10||num<1)
			{
				System.out.println("超出租車(chē)數(shù)量范圍，請(qǐng)從新輸入：");
				?num?=?input.nextInt();?
			}
			Car[]?carChoice?=?new?Car[num];????????//客戶(hù)選擇的車(chē)輛對(duì)象數(shù)組
			for(int?i=0;i<carChoice.length;i++)
			{
				System.out.println("請(qǐng)輸入第"+(i+1)+"輛車(chē)的序號(hào)：");
				int?carNum?=?input.nextInt();????????????//客戶(hù)選擇的車(chē)序號(hào)
				if(carNum>6||carNum<1)
				{
????????????????????System.out.println("輸入有誤，請(qǐng)從新輸入：");
?????????????????????carNum?=?input.nextInt();
				}
				carChoice[i]?=?car[carNum-1];
			}
			System.out.println("請(qǐng)輸入租車(chē)天數(shù)：");
			int?Day?=?input.nextInt();????????????????????//租車(chē)天數(shù)
			if(Day>30||Day<1)
			{
				System.out.println("輸入有誤，請(qǐng)從新輸入：");
				?Day?=?input.nextInt();??
			}
		
		
	//計(jì)算并顯示賬單
		int?totalCarPerson=0;????????//總的載客量
		float?totalCarCargo=0;????????//總的載貨量
		float?dayPrice=0;?????????????????????//每天的租金
		float?totalPrice=0;?????????????????//總價(jià)
		System.out.println("*******************您的賬單：*******************");
		System.out.println("*******可載人車(chē)有：");
		for(int?i=0;i<carChoice.length;i++)
		{
			if(carChoice[i]?instanceof?Automobile||carChoice[i]?instanceof?Pickup)
			{
				System.out.print('\t'+carChoice[i].getCarName());
				totalCarPerson?+=?carChoice[i].getCarPerson();
			}
			
			dayPrice?+=?carChoice[i].getPrice();
			
		}
		System.out.println('\t'+"共載人："+totalCarPerson+"人");
		
		System.out.println("*******可載貨車(chē)有：");
		for(int?i=0;i<carChoice.length;i++)
		{
			if(carChoice[i]?instanceof?Truck||carChoice[i]?instanceof?Pickup)
			{
				System.out.print('\t'+carChoice[i].getCarName());
				totalCarCargo?+=?carChoice[i].getCarCargo();
			}
		}
		System.out.println('\t'+"共載貨："+totalCarCargo+"噸");
		
		totalPrice?=?dayPrice*Day;
		System.out.println("********租車(chē)總價(jià)格："+totalPrice+"元");
		input.close();

	}

}