//Car package?com.Car; public??class?Car?{ String?name; double?rent; public?void?Car(String?name,double?rent){}; public?String?getName()?{ return?name; } public?void?setName(String?name)?{ this.name?=?name; } public?double?getRent()?{ return?rent; } public?void?setRent(double?rent)?{ this.rent?=?rent; } } //PassengerCar package?com.Car; public?class?PassengerCar?extends?Car?{ private?double?peopleC; public?PassengerCar(String?name,double?rent,double?peopleC){ this.name?=?name; this.rent?=?rent; this.peopleC?=?peopleC; } public?double?getPeopleC()?{ return?peopleC; } public?void?setPeopleC(double?peopleC)?{ this.peopleC?=?peopleC; } } //Pickup? package?com.Car; public??class?Pickup?extends?Car{ private?double?peopleC; private?double?cargoC; public?Pickup(String?name,double?rent,double?cargoC,double?peopleC)?{ this.name?=?name; this.rent?=?rent; this.cargoC?=?cargoC; this.peopleC?=?peopleC; } public?double?getCargoC()?{ return?cargoC; } public?void?setCargoC(double?cargoC)?{ this.cargoC?=?cargoC; } public?double?getPeopleC()?{ return?peopleC; } public?void?setPeopleC(double?peopleC)?{ this.peopleC?=?peopleC; } } //Truck? package?com.Car; public?class?Truck?extends?Car?{ private?double?cargoC; public?Truck(String?name,double?rent,double?cargoC)?{ this.name?=?name; this.rent?=?rent; this.cargoC?=?cargoC; } public?double?getCargoC()?{ return?cargoC; } public?void?setCargoC(double?cargoC)?{ this.cargoC?=?cargoC; } } package?com.Car; import?java.util.Scanner; public?class?Test?{ public?static?void?main(String[]?args)?{ Car[]?cars?=?{?new?PassengerCar("金龍大巴",?1000,?40), new?PassengerCar("奧迪A6",?500,?4),?new?Pickup("小皮卡",?300,?5,?4), new?Truck("大卡車",?800,?25)?}; Scanner?Type?=?new?Scanner(System.in); System.out.println("歡迎使用答答租車系統"); System.out.println("您是否要租車：1是?0否"); String?input?=?Type.next(); if?(input.equals("1"))?{ System.out.println("您可租車的類型及價目表："); System.out.println("序號\t汽車名稱\t租金\t\t容量"); int?i?=?1;//?車輛序號 for?(Car?Allcars?:?cars)?{ if?(Allcars?instanceof?PassengerCar)?{ System.out.println(i?+?"\t"?+?Allcars.getName()?+?"\t" +?Allcars.getRent()?+?"/天\t載人：" +?((PassengerCar)?Allcars).getPeopleC()?+?"/人"); i?+=?1; } if?(Allcars?instanceof?Pickup)?{ System.out.println(i?+?"\t"?+?Allcars.getName()?+?"\t" +?Allcars.getRent()?+?"/天\t載人：" +?((Pickup)?Allcars).getPeopleC()?+?"/人?載貨：" +?((Pickup)?Allcars).getCargoC()?+?"噸"); i?+=?1; } if?(Allcars?instanceof?Truck)?{ System.out.println(i?+?"\t"?+?Allcars.getName()?+?"\t" +?Allcars.getRent()?+?"/天\t載貨：" +?((Truck)?Allcars).getCargoC()?+?"噸"); i?+=?1; } } System.out.println("請輸入您要租車的數量："); int?num?=?Type.nextInt(); double?rentsum?=?0;//?租車總金額 double?Peosum?=?0;//?載人總數 double?CargoCsum?=?0;//?載貨總數 String[]?PassengerName?=?new?String[4];//?存放可載人車輛的name的數組 String[]?CargoCars?=?new?String[4];//?存放可載貨車輛的name的數組 int?p?=?0; int?c?=?0; for?(int?n?=?1;?n?<=?num;?n++)?{ System.out.println("輸入第"?+?n?+?"輛車的序號："); int?x?=?Type.nextInt(); rentsum?+=?cars[x?-?1].rent;//?計算租車金額 switch?(x?-?1)?{ case?0: if?(cars[x?-?1]?instanceof?PassengerCar)?{ PassengerName[p]?=?cars[x?-?1].name; Peosum?+=?((PassengerCar)?cars[x?-?1]).getPeopleC(); p?+=?1; } if?(cars[x?-?1]?instanceof?Pickup)?{ PassengerName[p]?=?cars[x?-?1].name; CargoCars[c]?=?cars[x?-?1].name; Peosum?+=?((Pickup)?cars[x?-?1]).getPeopleC(); CargoCsum?+=?((Pickup)?cars[x?-?1]).getCargoC(); p?+=?1; c?+=?1; } if?(cars[x?-?1]?instanceof?Truck)?{ CargoCars[c]?=?cars[x?-?1].name; CargoCsum?+=?((Truck)?cars[x?-?1]).getCargoC(); c?+=?1; } break; case?1: if?(cars[x?-?1]?instanceof?PassengerCar)?{ PassengerName[p]?=?cars[x?-?1].name; Peosum?+=?((PassengerCar)?cars[x?-?1]).getPeopleC(); p?+=?1; } if?(cars[x?-?1]?instanceof?Pickup)?{ PassengerName[p]?=?cars[x?-?1].name; CargoCars[c]?=?cars[x?-?1].name; Peosum?+=?((Pickup)?cars[x?-?1]).getPeopleC(); CargoCsum?+=?((Pickup)?cars[x?-?1]).getCargoC(); p?+=?1; c?+=?1; } if?(cars[x?-?1]?instanceof?Truck)?{ CargoCars[c]?=?cars[x?-?1].name; CargoCsum?+=?((Truck)?cars[x?-?1]).getCargoC(); c?+=?1; } break; case?2: if?(cars[x?-?1]?instanceof?PassengerCar)?{ PassengerName[p]?=?cars[x?-?1].name; Peosum?+=?((PassengerCar)?cars[x?-?1]).getPeopleC(); p?+=?1; } if?(cars[x?-?1]?instanceof?Pickup)?{ PassengerName[p]?=?cars[x?-?1].name; CargoCars[c]?=?cars[x?-?1].name; Peosum?+=?((Pickup)?cars[x?-?1]).getPeopleC(); CargoCsum?+=?((Pickup)?cars[x?-?1]).getCargoC(); p?+=?1; c?+=?1; } if?(cars[x?-?1]?instanceof?Truck)?{ CargoCars[c]?=?cars[x?-?1].name; CargoCsum?+=?((Truck)?cars[x?-?1]).getCargoC(); c?+=?1; } break; case?3: if?(cars[x?-?1]?instanceof?PassengerCar)?{ PassengerName[p]?=?cars[x?-?1].name; Peosum?+=?((PassengerCar)?cars[x?-?1]).getPeopleC(); p?+=?1; } if?(cars[x?-?1]?instanceof?Pickup)?{ PassengerName[p]?=?cars[x?-?1].name; CargoCars[c]?=?cars[x?-?1].name; Peosum?+=?((Pickup)?cars[x?-?1]).getPeopleC(); CargoCsum?+=?((Pickup)?cars[x?-?1]).getCargoC(); p?+=?1; c?+=?1; } if?(cars[x?-?1]?instanceof?Truck)?{ CargoCars[c]?=?cars[x?-?1].name; CargoCsum?+=?((Truck)?cars[x?-?1]).getCargoC(); c?+=?1; } break; default: break; } } System.out.println("請輸入租車天數："); int?y?=?Type.nextInt(); System.out.println("您的賬單："); System.out.println("***可載人的車有："); for?(String?pn?:?PassengerName)?{ System.out.print(pn?+?"\t"); } System.out.println("載人總數："?+?Peosum?+?"人"); System.out.println("***可載貨的車有："); for?(String?cc?:?CargoCars)?{ System.out.print(cc?+?"\t"); } System.out.println("載貨總數："?+?CargoCsum?+?"噸"); rentsum?=?rentsum?*?y; System.out.println("***租車總金額："?+?rentsum); }?else?if?(input.equals("2"))?{ System.out.println("歡迎您訪問答答租車系統，再見。"); }?else?{ System.out.println("輸入錯誤！"); main(null);//?再次調用主函數 } } }