12.13日作业

接口

Fruit.java

package com.neuedu.fruit;

public interface Fruit {
	
}

Apple.java

package com.neuedu.fruit;

public class Apple {

	public Apple() {
		System.out.println("创建了一个苹果类的对象");
	}
	
}

Banana.java

package com.neuedu.fruit;

public class Banana implements Fruit {
	public Banana(){
		System.out.println("创建了一个香蕉对象");
	}
}

Gardener.java

package com.neuedu.fruit;

import java.util.Scanner;

public class Gardener {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
		
		if(str.equals("苹果")){
			new Apple();
		}else if(str.equals("香蕉")){
			new Banana();
		}else if(str.equals("葡萄")){
			new Grape();
		}else{
			System.out.println("请输入正确水果：");
		}
		
	}
}

Grape.java

package com.neuedu.fruit;

public class Grape implements Fruit{
	public Grape() {
		System.out.println("创建了一个葡萄对象");
	}
}