Ⅰ java習題定義一個交通工具類Vehicle,包含屬性(speed,name,color)和方法(start,stop,run)
publicabstractclassVehicle{
publicintspeed;
publicStringname;
publicStringcolor;
publicvoidstart(){}
publicvoidstop(){}
publicvoidrun(){}
}
{}
{}
publicclassJetextendsAircraft{}
Ⅱ (用C++)定義一個交通工具類
#include <iostream>
using namespace std;
class Vehicle
{
public:virtual Display();
};
Vehicle::Display()
{cout<<"Vehicle message\n";}
class Car:public Vehicle
{
public:Display();
};
Car::Display(){cout <<"Car message\n";}
class Truck:public Vehicle
{
public:Display();
};
Truck::Display()
{cout <<"Truck message\n";}
main()
{
Vehicle vehicle, *ptr;
Car car;
Truck truck;
ptr = &vehicle;
ptr->Display();
ptr = &car;
ptr->Display();
ptr = &truck;
ptr->Display();
}
Ⅲ android studio 自定義工具類放在什麼目錄下
工具類一般放到自己建立的util包裡面,比如你新建工程包名為com.example.,可以在這個下面再new一個pakage,命名為util,所有的工具類都放進去。
Ⅳ 闂錛 20 瀹氫箟浜ら氬伐鍏風被Vehicle錛屽寘鍚鉶氬嚱鏁癙rintinfo錛堬級銆傜敱鍏朵綔涓哄熀綾繪淳鐢熷皬杞
#include "stdafx.h"
#include <iostream>
using namespace std;
class Vehicle
{
public:
virtual void Printinfo()
{
cout << "This is Vehicle" << endl;
}
};
class Car : public Vehicle
{
public:
virtual void Printinfo()
{
cout << "This is Car" << endl;
}
};
class Truck : public Vehicle
{
public:
virtual void Printinfo()
{
cout << "This is Truck" << endl;
}
};
class Boat : public Vehicle
{
public:
virtual void Printinfo()
{
cout << "This is Boat" << endl;
}
};
int _tmain(int argc, _TCHAR* argv[])
{
Car car;
Truck truck;
Boat boat;
Vehicle& rVehicle1 = car;
rVehicle1.Printinfo();
Vehicle& rVehicle2 = truck;
rVehicle2.Printinfo();
Vehicle& rVehicle3 = boat;
rVehicle3.Printinfo();
return 0;
}
Ⅳ 1、定義一個交通工具類,並定義介面,說明交通工具可以移動。繼承交通工具而產生汽車、飛機、輪船,並實
你定義一個交通工具借口、裡面有一個移動方法、再定義一個類實現交通工具借口、你在實例化的時候就可以實例化出汽車飛機之類的l
Ⅵ java工具類怎麼定義
工具類的定義是以util或utils結尾,裡麵包含的變數和方法都必須要是靜態的static方法,這樣才能提供別人調用。