上机作业4
实验1 机动车
public class Vehicle {
double speed;
int power;
void speedUp(int s){
speed=speed+s;
}
void speedDown(int d){
speed=speed-d;
}
void setPower(int p){
power=p;
}
int getPower(){
return power;
}
double getSpeed(){
return speed;
}
}
public class Vehicle {
