1． 编写一个Java应用程序，设计一个汽车类Vehicle，包含的成员属性有：车轮个数wheels和车重weight。

Posted 2023-03-29

1． 编写一个Java应用程序，设计一个汽车类Vehicle，包含的成员属性有：车轮个数wheels和车重weight。小车类Car是Vehicle的子类，其中包含属性载人数passenger_load。卡车Truck是Vehicle的子类，其中包含载人数passenger_load和载重量payload。要求每个类都有相关数据的输出方法。
2． 运行程序，理解成员变量的继承与隐藏。

classVehicleprivateintwheels；privatefloatweight；protectedVehicle(intwheels，floatweight)this。wheels=wheels；this。weight=weight。是普通的除号，即10/2=5。

编写java程序的注意事项：

大小写敏感：Java是大小写敏感的，这就意味着标识符Hello与hello是不同的。

类名：对于所有的类来说，类名的首字母应该大写。如果类名由若干单词组成，那么每个单词的首字母应该大写，例如 MyFirstJavaClass。

方法名：所有的方法名都应该以小写字母开头。如果方法名含有若干单词，则后面的每个单词首字母大写，例如myFirstJavaClass。

参考技术A /*
*编译运行均已通过
*直接复制黏贴即可
*文件名为：Test.java
*/
class Vehicle
private int wheels;
private float weight;
protected Vehicle(int wheels, float weight)
this.wheels = wheels;
this.weight = weight;

public int getWheels()
return wheels;

public float getWeight()
return weight;

public void print()
System.out.println("汽车：");
System.out.println("共有"+this.getWheels()+"个轮子");
System.out.println("重量为"+this.getWeight()+"吨");


class Car extends Vehicle
private int passenger_load;
public Car(int wheels, float weight, int passenger_load)
super(wheels, weight);
this.passenger_load = passenger_load;

public int getPassenger_load()
return passenger_load;

public void print()
System.out.println("小车：");
System.out.println("共有"+this.getWheels()+"个轮子");
System.out.println("重量为"+this.getWeight()+"吨");
System.out.println("载人数为"+this.getPassenger_load()+"人");



class Truck extends Vehicle
private int passenger_load;
private float payload;
public Truck(int wheels, float weight, int passenger_load, float payload)
super(wheels, weight);
this.passenger_load = passenger_load;
this.payload = payload;

public int getPassenger_load()
return passenger_load;

public float getPayload()
return payload;

public void print()
System.out.println("卡车：");
System.out.println("共有"+this.getWheels()+"个轮子");
System.out.println("重量为"+this.getWeight()+"吨");
System.out.println("载人数为"+this.getPassenger_load()+"人");
System.out.println("载重量为"+this.getPayload()+"吨");



public class Test
public static void main(String args[])
Vehicle car = new Car(4, 3, 4);
Vehicle truck = new Truck(6, 6, 2, 10);
System.out.println("*****************************");
car.print();
System.out.println("*****************************");
truck.print();




/*
*output:
*****************************
小车：
共有4个轮子
重量为3.0吨
载人数为4人
*****************************
卡车：
共有6个轮子
重量为6.0吨
载人数为2人
载重量为10.0吨
*/本回答被提问者采纳

Java基础-继承-编写一个Java应用程序，设计一个汽车类Vehicle，包含的属性有车轮个数 wheels和车重weight。小车类Car是Vehicle的子类，其中包含的属性有载人数 loade

#29．编写一个Java应用程序，设计一个汽车类Vehicle，包含的属性有车轮个数

wheels和车重weight。小车类Car是Vehicle的子类，其中包含的属性有载人数

loader。卡车类Truck是Car类的子类，其中包含的属性有载重量payload。每个

类都有构造方法和输出相关数据的方法。最后，写一个测试类来测试这些类的功

能。

package hanqi;

public class Vehicle {
    
    private int wheels;
    private int weight;
    public int getWheels() {
        return wheels;
    }
    public void setWheels(int wheels) {
        this.wheels = wheels;
    }
    public int getWeight() {
        return weight;
    }
    public void setWeight(int weight) {
        this.weight = weight;
    }
    
    //构造
    public Vehicle(int wheels,int weight)
    {
        this.weight=weight;
        this.wheels=wheels;
    }
    
}

package hanqi;

public class Car extends Vehicle{
    
    private int loader;

    public int getLoader() {
        return loader;
    }

    public void setLoader(int loader) {
        this.loader = loader;
    }
    
    //构造
    public Car(int wheels, int weight,int loader)
    {
        super(wheels,weight);
        this.loader=loader;
    }

}

package hanqi;

public class Truck extends Car{
    private int payload;

    public int getPayload() {
        return payload;
    }

    public void setPayload(int payload) {
        this.payload = payload;
    }
    
    //构造
    public Truck(int wheels, int weight, int loader, int payload)
    {
        super(wheels,weight,loader);
        this.payload=payload;
    }

}

package hanqi;

public class TestVehicle {

    public static void main(String[] args) {
        
        Vehicle a = new Vehicle(4,3);
        System.out.println("a有："+a.getWheels()+"个轮子\t："+a.getWeight()+"吨重");
    
        
        Car  b= new Car(4,3,4);
        System.out.println("b有："+b.getWheels()+"个轮子\t："+b.getWeight()+"吨重\t可以坐"+b.getLoader()+"个人");
    
        Truck  c= new Truck(6,10,5,10);
        System.out.println("c有："+c.getWheels()+"个轮子\t："+c.getWeight()+"吨重\t可以坐"+c.getLoader()+"个人\t载重"+c.getPayload()+"吨");

        
}
}