• 本项目锻炼技能：面向对象 （ 继承 封装 多态 简单工厂模式）

• 项目需求：

  
  
  image.png

• 源代码：

//父类的pizza
public class Pizza {

    //父类共有的属性
    //名称
    private String name;
    //尺寸
    private int size;
    //价格
    private int price;

    //父类的构造器
    public Pizza(String name, int size, int price) {
        this.name = name;
        this.size = size;
        this.price = price;
    }

    public Pizza() {
    }

    //getter setter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;
    }

    public void showInformation(){
        System.out.println("名称:"+this.name+"\n"+"价格："+this.price+"元\n"+"大小："+this.size+"寸");
    }
}

//子类：培根pizza
public class BacconPizza extends Pizza {
    //子类特有的属性
    //克数
    private int kg;

    //构造方法

    public BacconPizza(String name, int size, int price, int kg) {
        super(name, size, price);
        this.kg = kg;
    }

    public BacconPizza() {
    }

    //getter setter方法

    public int getKg() {
        return kg;
    }

    public void setKg(int kg) {
        this.kg = kg;
    }

    //对父类显示方法的重写

    @Override
    public void showInformation() {
        super.showInformation();
        System.out.println("培根克数："+this.kg+"g");
    }
}

//子类：fruit类
public class FruitPizza extends Pizza {
    //水果pizza特有的属性
    //想要加入的水果
    private String conponent;

    //构造器


    public FruitPizza(String name, int size, int price, String conponent) {
        super(name, size, price);
        this.conponent = conponent;
    }

    public FruitPizza() {
    }

    //getter,setter方法

    public String getConponent() {
        return conponent;
    }

    public void setConponent(String conponent) {
        this.conponent = conponent;
    }

    //重写父类展示的方法


    @Override
    public void showInformation() {
        super.showInformation();
        System.out.println("水果配料："+conponent);
    }
}

//制造pizza的工厂类
public class PizzaStory {

    public static Pizza producePizza(int select){
        Pizza p=null;
        Scanner sc=new Scanner(System.in);
        switch (select){
            case 1:
                System.out.print("请输入培根的克数：");
                int kg = sc.nextInt();
                System.out.print("请输入披萨的大小：");
                int size = sc.nextInt();
                System.out.print("请输入披萨的价格：");
                int price = sc.nextInt();

                p=new BacconPizza("培根披萨",size,price,kg);
                break;
            case 2:
                System.out.print("请输入你想要加入的水果：");
                String conponent = sc.next();
                System.out.print("请输入披萨的大小：");
                int size1 = sc.nextInt();
                System.out.print("请输入披萨的价格：");
                int price1 = sc.nextInt();

                p=new FruitPizza("水果披萨",size1,price1,conponent);
                break;

                default:
                    break;
        }
        return p;
    }
}

//test测试类
public class Test {
    public static void main(String[] args) {
        System.out.print("请选择要制作的披萨：1.培根披萨 2.水果披萨：");
        Scanner sc=new Scanner(System.in);
        int select=sc.nextInt();//选择披萨
        //提出需求，披萨工厂开始制作披萨。
        Pizza pizza = PizzaStory.producePizza(select);
        pizza.showInformation();
    }

}

• 运行结果：

  
  
  运行结果1.png
  
  
  运行结果2.png