public class Vehicle {
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public double speed;
public int power;
public void setSpeed(double speed) {
this.speed = speed;
}
public double getSpeed() {
return speed;
}
public void speedUp(int speedup){
System.out.println("汽车正在加速行驶中!");
}
public void speedDown(int speedDown){
System.out.println("汽车正在减速中!");
}
public void setPower(int power) {
this.power = power;
}
public int getPower() {
return power;
}
}
为什么代码没有错误但运行不出来啊 这个是我发布的问题的第一个题