（一）功能和效果

（二）代码实现

（1）披萨父类

public class Pizza {
    //属性
    private String name;//名称
    private int size;//大小
    private int price;//价格
    //方法
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getSize() {
        return size;
    }
    public void setSize(int size) {
        this.size = size;
    }
    public int getPrice() {
        return price;
    }
    public void setPrice(int price) {
        this.price = price;
    }
    //展示匹萨信息：
    public String showPizza(){
        return "匹萨的名字是："+name+"\n匹萨的大小是："+size+"寸\n匹萨的价格："+price+"元";
    }
    //构造器
    public Pizza() {
    }
    public Pizza(String name, int size, int price) {
        this.name = name;
        this.size = size;
        this.price = price;
    }
}

（2）培根披萨

public class BaconPizza extends Pizza {
    //属性：
    private int weight;
    public int getWeight() {
        return weight;
    }
    public void setWeight(int weight) {
        this.weight = weight;
    }
    //构造器：
    public BaconPizza() {
    }
    public BaconPizza(String name, int size, int price, int weight) {
        super(name, size, price);
        this.weight = weight;
    }
    //重写父类showPizza方法：
    @Override
    public String showPizza() {
        return super.showPizza()+"\n培根的克数是："+weight+"克";
    }
}

（3）水果披萨

public class FruitsPizza extends Pizza{
    //属性：
    private String burdening;
    public String getBurdening() {
        return burdening;
    }
    public void setBurdening(String burdening) {
        this.burdening = burdening;
    }
    //构造器：
    public FruitsPizza() {
    }
    public FruitsPizza(String name, int size, int price, String burdening) {
        super(name, size, price);
        this.burdening = burdening;
    }
    //重写父类showPizza方法：
    @Override
    public String showPizza() {
        return super.showPizza()+"\n你要加入的水果："+burdening;
    }
}

（4）工厂类

public class PizzaStore {
    public static Pizza getPizza(int choice){
        Scanner sc = new Scanner(System.in);
        Pizza p = null;
        switch (choice){
            case 1:
                {
                    System.out.println("请录入培根的克数：");
                    int weight = sc.nextInt();
                    System.out.println("请录入匹萨的大小：");
                    int size = sc.nextInt();
                    System.out.println("请录入匹萨的价格：");
                    int price = sc.nextInt();
                    //将录入的信息封装为培根匹萨的对象：
                    BaconPizza bp = new BaconPizza("培根匹萨",size,price,weight);
                    p = bp;
                }
                break;
            case 2:
                {
                    System.out.println("请录入你想要加入的水果：");
                    String burdening = sc.next();
                    System.out.println("请录入匹萨的大小：");
                    int size = sc.nextInt();
                    System.out.println("请录入匹萨的价格：");
                    int price = sc.nextInt();
                    //将录入的信息封装为水果匹萨的对象：
                    FruitsPizza fp = new FruitsPizza("水果匹萨",size,price,burdening);
                    p = fp;
                }
                break;
        }
        return p;
    }
}

（5）测试类

```
public class Test {
    public static void main(String[] args) {
        //选择购买匹萨：
        Scanner sc = new Scanner(System.in);
        System.out.println("请选择你想要购买的匹萨（1.培根匹萨 2.水果匹萨）:");
        int choice = sc.nextInt();//选择
        //通过工厂获取匹萨：
        Pizza pizza = PizzaStore.getPizza(choice);
        System.out.println(pizza.showPizza());
    }
}
```
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