Ⅰ java习题定义一个交通工具类Vehicle,包含属性(speed,name,color)和方法(start,stop,run)
publicabstractclassVehicle{
publicintspeed;
publicStringname;
publicStringcolor;
publicvoidstart(){}
publicvoidstop(){}
publicvoidrun(){}
}
{}
{}
publicclassJetextendsAircraft{}
Ⅱ (用C++)定义一个交通工具类
#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 自定义工具类放在什么目录下
工具类一般放到自己建立的util包里面,比如你新建工程包名为com.example.,可以在这个下面再new一个pakage,命名为util,所有的工具类都放进去。
Ⅳ 闂锛 20 瀹氫箟浜ら氬伐鍏风被Vehicle锛屽寘鍚铏氬嚱鏁癙rintinfo锛堬級銆傜敱鍏朵綔涓哄熀绫绘淳鐢熷皬杞
#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、定义一个交通工具类,并定义接口,说明交通工具可以移动。继承交通工具而产生汽车、飞机、轮船,并实
你定义一个交通工具借口、里面有一个移动方法、再定义一个类实现交通工具借口、你在实例化的时候就可以实例化出汽车飞机之类的l
Ⅵ java工具类怎么定义
工具类的定义是以util或utils结尾,里面包含的变量和方法都必须要是静态的static方法,这样才能提供别人调用。