日期:2014-05-20 浏览次数:20719 次
class Meal { Meal() { print("Meal()"); } } class Bread { Bread() { print("Bread()"); } } class Cheese { Cheese() { print("Cheese()"); } } class Lettuce { Lettuce() { print("Lettuce()"); } } class Lunch extends Meal { Lunch() { print("Lunch()"); } } class PortableLunch extends Lunch { PortableLunch() { print("PortableLunch()");} } public class Sandwich extends PortableLunch { private Bread b = new Bread(); private Cheese c = new Cheese(); private Lettuce l = new Lettuce(); public Sandwich() { print("Sandwich()"); } public static void main(String[] args) { new Sandwich(); } }