В чем ошибка?
package com.javarush.task.task13.task1303;
/*
Пиво с колой не мешать
*/
public class Solution {
public static void main(String[] args) throws Exception {
print(new Beer());
print(new Cola());
}
private static void print(Drink drink) {
System.out.println(drink.getClass().getSimpleName());
}
public interface Drink {
boolean isAlcoholic();
}
public static class Beer implements Drink {
boolean isAlcoholic(){return true;};
}
public static class Cola implements Drink {
boolean isAlcoholic(){return false;}
}
}