使用Java语言面向对象实现蛋糕店 1.定义抽象蛋糕类(Cake)（1.成员变量（名称、尺寸、价格）2.构造方法 3.get/set方法 4.show（）方法用来展示信息 5.写一个抽象方法suggest（））； 2.定义水果蛋糕类(FruitCake)，继承抽象蛋糕类(Cake)，定义变量水果材料Material； 3. 定义巧克力蛋糕类(ChocolateCake)，继承抽象蛋糕类(Cake)， 定义变量巧克力重量weight 4. 定义测试类，编写主界面，用Scanner输入数据，用switch进行选择判断，编写俩个方法进行调用。

好的，让我来解答一下你的问题。

以下是Java语言面向对象实现蛋糕店的代码：

1.定义抽象蛋糕类(Cake)

public abstract class Cake {
    private String name;
    private double size;
    private double price;

    public Cake(String name, double size, double price) {
        this.name = name;
        this.size = size;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getSize() {
        return size;
    }

    public void setSize(double size) {
        this.size = size;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public void show() {
        System.out.println("名称：" + name + "，尺寸：" + size + "，价格：" + price);
    }

    public abstract void suggest();
}

2.定义水果蛋糕类(FruitCake)

public class FruitCake extends Cake {
    private String material;

    public FruitCake(String name, double size, double price, String material) {
        super(name, size, price);
        this.material = material;
    }

    public String getMaterial() {
        return material;
    }

    public void setMaterial(String material) {
        this.material = material;
    }

    @Override
    public void suggest() {
        System.out.println("该蛋糕推荐搭配" + material + "水果");
    }
}

3.定义巧克力蛋糕类(ChocolateCake)

public class ChocolateCake extends Cake {
    private double weight;

    public ChocolateCake(String name, double size, double price, double weight) {
        super(name, size, price);
        this.weight = weight;
    }

    public double getWeight() {
        return weight;
    }

    public void setWeight(double weight) {
        this.weight = weight;
    }

    @Override
    public void suggest() {
        System.out.println("该蛋糕推荐使用" + weight + "g的巧克力");
    }
}

4.定义测试类，编写主界面，用Scanner输入数据，用switch进行选择判断，编写俩个方法进行调用。

import java.util.Scanner;

public class CakeTest {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.println("欢迎来到蛋糕店！");
        System.out.println("请选择您要购买的蛋糕类型：");
        System.out.println("1. 水果蛋糕");
        System.out.println("2. 巧克力蛋糕");

        int choice = input.nextInt();

        switch (choice) {
            case 1:
                FruitCake fruitCake = new FruitCake("水果蛋糕", 20, 88.88, "草莓");
                fruitCake.show();
                fruitCake.suggest();
                break;
            case 2:
                ChocolateCake chocolateCake = new ChocolateCake("巧克力蛋糕", 18, 99.99, 200);
                chocolateCake.show();
                chocolateCake.suggest();
                break;
            default:
                System.out.println("输入错误，请重新选择！");
        }

        input.close();
    }
}

以上就是Java语言面向对象实现蛋糕店的代码，希望对你有所帮助！