用Java模拟鸭子打字

public class DuckTypingSimulation {
    public static void main(String[] args) {
        Duck duck = new Duck();
        duck.quack();
        duck.type();
    }
}

interface Typing {
    void type();
}

class Duck implements Typing {
    @Override
    public void type() {
        System.out.println("鸭子在打字...");
    }

    public void quack() {
        System.out.println("鸭子在嘎嘎叫...");
    }
}