面向对象编程练习之一
class EXP3_1 {
private String ownerName; //车主姓名
private float curSpeed; //当前车速
private float curDirInDegree; //当前方向盘转向角度
public EXP3_1(String ownerName){
this.ownerName=ownerName;
}
public EXP3_1(String ownerName, float speed, float dirInDegree){
this(ownerName);
this.curSpeed=speed;
this.curDirInDegree=dirInDegree;
}
public String getOwnerName() { //提供对车主姓名的访问
return ownerName;
}
public float getCurDirInDegree() { //提供对当前方向盘转向角度的访问
return curDirInDegree;
}
public float getCurSpeed() { //提供对当前车速的访问
return curSpeed;
}
public void changeSpeed(float curSpeed) { //提供改变当前的车速
this.curSpeed = curSpeed;
}
public void stop(){ //提供停车
this.curSpeed=0;
}
}

public class EXP3_2 {
public static void main(String[] args){
EXP3_1 car=new EXP3_1("成龙",200f,25f);
System.out.println("车主姓名: "+car.getOwnerName());
System.out.println("当前车速: "+car.getCurSpeed());
System.out.println("当前转向角度: "+car.getCurDirInDegree());
car.changeSpeed(80);
System.out.println("在调用changeSpeed(80)后,车速变为: " + car.getCurSpeed());
car.stop();
System.out.println("在调用stop()后, 车速变为: "+car.getCurSpeed());
}
}
运行结果：
--------------------Configuration: <Default>--------------------
车主姓名: 成龙
当前车速: 200.0
当前转向角度: 25.0
在调用changeSpeed(80)后,车速变为: 80.0
在调用stop()后, 车速变为: 0.0

Process completed.