2.接口:UML类图符号中接口使用两层矩形框表示,与类图的区别主要是顶端有interface显示。第一行是接口名称。第二行是接口方法. 3.继承类(extends):用空心三角形+实线来表示。 4.实现接口(implements):用空心三角形+虚线来表示 5.关联(Association):用实线箭头来表示,例如:燕子与气候 6.聚合(Aggregation):用空心的...
UML里面所说的interface是协议的另一种说法,并不是指COM的interface,CORBA的interface,Java的interface,Delphi的interface,人机界面的interface或NIC的interface。 在具体实现中,是可以把UML的interface实现为语言的interface,分布式对象环境的interface或其它什么 interface,但就理解UML的interface而言,指的是系统每部分的实现和...
implements Interface1, ... ,InterfaceN{ …… } 1. 2. 3. 4. 5. 6. 7. 8. 利用关键字extends, 接口可以继承其他接口。这样的接口称为子接口。 interfaceNewInterface extendsInterface1, ... ,InterfaceN{ …… } 1. 2. 3. 4. 5. 6. 7. 8. 所有的类共享同一个根类Object , 但是接口没有...
关键字implements声明该类实现一个或多个接口。如:class A implements Printable,Addable 重写接口中的方法:如果非抽象类实现了某个接口,那么必须重写这个接口的所有方法。注意接口中的方法一定是public abstract方法,所以类重写方法时去掉abstract修饰符、给出方法体、访问权限一定要用public来修饰 接口的UML层:第一层为...
interface Command{//抽象命令类 void on(); void off(); }; class RemoteController{ //遥控器类 protected Command []commands=new Command[4]; //遥控器有4个按钮,按照编号分别对应4个Command对象 public void onPressButton(int button){ //按钮被按下时执行命令对象中的命令 ...
There is an additional diagram type within UML 2.x versions—composite structure diagram. It shows the internal structure of a class or collaboration and uses interface, component, port, and connector to show the internal structure. The difference between components and composite structure is tiny....
From the tester's perspective, “MyClass implements My Interface” is very similar to “MyClass extends MySuperclass.” The first difference is that an interface does not come with an implementation, thus we can derive only specification-based test cases from it. Second, the parallel test hier...
class SuperSonicFly implements FlyBehavior{ public void fly(){ System.out.println("超音速飞行!" ); } }; interface TakeOffBehavior { public void takeOff(); }; class VerticalTakeOff implements TakeOffBehavior { public void takeOff (){ System.out.println("垂直起飞!" ); } ...
@FunctionalInterfacepublicinterfaceCondition{/** * 决定条件是否通过 *@paramcontext - 条件上下文 *@parammetadata - 元数据,里面标注该注解的类或方法 *@returntrue-通过,false-不通过 **/booleanmatches(ConditionContext context, AnnotatedTypeMetadata metadata); ...
15RealizationThe class implements the operations and attributes defined by the interface. Use theInheritancetool to create a realization between a class and an interface. 16RealizationAn alternative presentation of the same relationship. The label on the lollipop symbol identifies the interface. ...