编写一个Java应用程序，该程序有2个类：Vehicle(机动车)和User(主类)。

Vehicle类的成员变量有：speed(速度)、power(功率)。成员方法有：speedUp(int s)—加速，speedDown(int d)—减速，setPower(int p)—设置功率，getPower()—获取功率-Write a Java application, the program has two categories: Vehicle (vehicle) and User (master class). Vehicle class member variables are: speed (Speed), power (power). Members of the methods are: speedUp (int s)- acceleration, speedDown (int d)- deceleration, setPower (int p)- setting power, getPower ()- Get Power