java - 如何将来自多个接口(interface)和父类的对象存储在一个数组中

Question

我被作业问题困住了。

它要求我设计界面 Drawable、Rotatable、Resizable 和 Sounds。开发一个执行以下操作的程序。

一个 Animal 类，它将具有名称属性和名称的 setter/getter 方法。 Animal 可以发出声音，并且可以绘制、旋转和调整大小。具有名称和年龄属性以及名称和年龄的 setter/getter 方法的 Vehicle 类。车辆还可以发出声音，并且可以绘制、旋转和调整大小。创建存储在同一数组中的 2 辆汽车和 2 只动物的集合。

我已经创建了接口(interface):

interface Drawable
{
    void drawObject();
}
interface Rotatable
{
    void rotateObject();
}
interface Resizable
{
    void resizeObject();
}
interface Sounds
{
    void playSound();
}

父类(动物和车辆)和子类(动物的 Pandas 和老虎，车辆的本田和丰田)。

abstract class Animal implements Drawable, Rotatable, Resizable, Sounds
{
    String name;
    public abstract void setName();
    public abstract String getName();
    public abstract void drawObject();
    public abstract void rotateObject();
    public abstract void resizeObject();
    public abstract void playSound();
}

class Panda extends Animal
{
    public void setName()
    {
        System.out.println("Panda's name is Bao Bao");
    }
    public String getName()
    {
        return name;
    }
    public void drawObject()
    {
        System.out.println("Drawing a Panda");
    }
    public void rotateObject()
    {
        System.out.println("Rotating a Panda");
    }
    public void resizeObject()
    {
        System.out.println("Resizing a Panda");
    }
    public void playSound()
    {
        System.out.println("Panda sound");
    }
}

class Tiger extends Animal
{
    public void setName()
    {
        System.out.println("Tiger's name is Si Si");
    }
    public String getName()
    {
        return name;
    }
    public void drawObject()
    {
        System.out.println("Drawing a Tiger");
    }
    public void rotateObject()
    {
        System.out.println("Rotating a Tiger");
    }
    public void resizeObject()
    {
        System.out.println("Resizing a Tiger");
    }
    public void playSound()
    {
        System.out.println("Tiger sound");
    }
}

abstract class Vehicle implements Drawable, Rotatable, Resizable, Sounds
{
    String name;
    int age;
    public abstract void setName();
    public abstract String getName();
    public abstract void setAge();
    public abstract int getAge();
    public abstract void drawObject();
    public abstract void rotateObject();
    public abstract void resizeObject();
    public abstract void playSound();
}

class Honda extends Vehicle
{
    public void setName()
    {
        System.out.println("Honda's name is Civic");
    }
    public String getName()
    {
        return name;
    }
    public void setAge()
    {
        System.out.println("Honda is 10 years old");
    }
    public int getAge()
    {
        return age;
    }
    public void drawObject()
    {
        System.out.println("Drawing a Honda");
    }
    public void rotateObject()
    {
        System.out.println("Rotating a Honda");
    }
    public void resizeObject()
    {
        System.out.println("Resizing a Honda");
    }
    public void playSound()
    {
        System.out.println("Honda sound");
    }
}

class Toyota extends Vehicle
{
    public void setName()
    {
        System.out.println("Toyota's name is Camry");
    }
    public String getName()
    {
        return name;
    }
    public void setAge()
    {
        System.out.println("Honda is 1 year old");
    }
    public int getAge()
    {
        return age;
    }
    public void drawObject()
    {
        System.out.println("Drawing a Toyota");
    }
    public void rotateObject()
    {
        System.out.println("Rotating a Toyota");
    }
    public void resizeObject()
    {
        System.out.println("Resizing a Toyota");
    }
    public void playSound()
    {
        System.out.println("Toyota sound");
    }
}

在我的主要方法中，我能够创建 2 个数组并循环遍历每个数组以显示输出。我的问题是如何将 2 个不同的类组合到一个数组中并运行循环。

import java.util.Arrays;

public class ManipulateAnimals
{
    public static void main(String[] args)
    {
        Animal[] animal = {new Panda(), new Tiger()};
        Vehicle[] vehicle = {new Honda(), new Toyota()};

        for(int i = 0; i < animal.length; i++)
        {
            animal[i].setName();
            animal[i].getName();
            animal[i].drawObject();
            animal[i].rotateObject();
            animal[i].resizeObject();
            animal[i].playSound();
            System.out.println(" ");
        }


        for(int i = 0; i < vehicle.length; i++)
        {
            vehicle[i].setName();
            vehicle[i].getName();
            vehicle[i].setAge();
            vehicle[i].getAge();
            vehicle[i].drawObject();
            vehicle[i].rotateObject();
            vehicle[i].resizeObject();
            vehicle[i].playSound();
            System.out.println(" ");
        }
    }
}

Answer 1

通常这类问题是通过引入一个新的上层接口(interface)来解决的。

因此，您将拥有 Drawable extends Editable、Rotatable extends Editable 等等。

之后您将能够创建一个Editable 数组。