<<教室>>ClassRoom
<<人类>>Person
🔐 <<姓名>> name : String
Animal
实线箭头表示：通过Customer可以找到Order，Customer对象中有一个Order的属性。public class Customer {Order order}public class Order{}
+friend
<<人类>>Human
🔐 <<姓名>> name : String🔐 <<性别>> sex : String
1
<<生物>>LivingBeings
🧼<<呼吸>> breath(air:Air)
1
1 +wife
Cat
<<Interface>>FoodMenu
🧼<<西红柿炒鸡蛋>>Food1() : void
<<消费者>>Customer
<<车轮>>Wheel
public interface FoodMenu {}public class Cooker implements FoodMenu{}
class Animal {}class Cat extends Animal{}
+husband 1
<<订单>>Order
Cooker
public class Human { Human wife; Human husband; String name; String sex;}
public class ClassRoom { List<Student> students;}public class Student {}
public class LivingBeings { public void breath(Air air) { }}public class Air {}
<<空气>>Air
<<汽车>>Car
public class Person { Person friend;}
public class Car { List<Wheel> wheels;}public class Wheel {}
<<学生>>Student
4
