uml

问题 I am designing a class diagram for scrabble game. In one of the classes, I have final variable declared. Can anybody tell me, how can I indicate a variable as final in the UML class diagram? 回答1: Constant (i.e. final) fields are indicated via naming convention: constants should be in ALL_CAPS Source 回答2: There are different notions of final that are all represented in different ways: final definition , i.e. it cannot be overridden in sub-classes - this corresponds to the isLeaf property of

问题 This question already has answers here : How to represent the nested class of C++ in UML? (3 answers) Closed 7 months ago . Say I have a class name A. Within this class I define enum B by public enum B {AA,BB,CC} . Now I want to draw a uml to reflect this relation ship, how should I do this? 回答1: In a class class diagram the representation uses (+)---- , for instance : 来源： https://stackoverflow.com/questions/62608571/how-to-draw-java-uml-class-diagram-with-enum-being-created-within-another

问题 I'm not sure how to represent something like the following in a sequence diagram (in Ruby): class FirstClass def process thing = SecondClass.new('string argument', third_class, 2) end def third_class ThirdClass.new('another string argument',) end end The first message in the sequence is a call to an instance of FirstClass, and the part that's tripping me up is how to represent the ThirdClass.new being passed as an argument to the SecondClass initializer. 回答1: Basically you just show how and

问题 I am using PlantUML to make simple class diagrams and the tool is awesome, but I couldn't find any way to align classes with each other except putting them into packages or using relationships like Alice -left-* Bob. What I need is something like: @startuml class Bob class Alice class Dan **Dan aligned Alice: horizontally** 'or using a grid? **Bob at grid (2, 3)** @enduml Is there a way? 回答1: Using a -[hidden] relation can do the job : @startuml class Bob class Alice class Dan class Foo class

问题 I'm making a use case diagram for a new system. I'm wondering when a system should be included as an actor in use case diagram? Thanks. 回答1: As stated in another answer, an actor is a system or role interacting with the system under development. You should include a system as an actor in a use case if it is outside the system you are developing, and if it directly interacts with the system you are developing. This is important because you need to define the boundary of your system, which

问题 I'm studying the GoF design patterns, in particular the Facade pattern. I understand its use and implementation, but I have a doubt about its UML model. The solution proposed by my professor, summarized, is the following: public class Facade{ private ClassA c1; private ClassB c2; private ClassC c3; public Facade(){ this.c1 = new ClassA; this.c2 = new ClassB; this.c3 = new ClassC; } public void FacadeMethod(){ ... c1.operationA(); c2.operationB(); c3.operationC(); ... } } The UML model

问题 I am very new to the concept of use case diagrams and I am a little confused, I have a use case diagram "Monthly Report Archiving" and I want to ask if the use of << include >> of a case must pass login? and Is the use case that I made correct? so in my case right now it's about "Monthly Report Archiving". The flow is: public relations receives a proposal from the community, then the proposal data will be stored by the community relations into the system to be later seen by Division X and

问题 Here's the use case scenario I have Ever Green Homes PVT Ltd. (EGH) sells houses. People who want to sell their houses sign a contract with EGH and provide information on their house. This information is kept in a database by EGH and a subset of this information is sent to the citywide multiple listing service used by all real estate agents. EGH works with two types of potential buyers. Some buyers have an interest in one specific house. In this case, EGH prints information from its database,

问题 I'm in the process of getting my head around UML state digrams while analysing the states that one of our customers can have. I'm attempting to use a composite state with orthogonal regions in which one state in one reason is the trigger for at least one state change in another orthogonal reason. I realise that I might be trying to use the wrong paradigm to model this, so feel free to correct me on that basis, but there is a simplified but slightly more detailed explanation of the situation

问题 The task: Each field has place for multiple entities and have 1-10 neighbors. The fields are different. Some of them are trapped and if an entity steps on them they will not be able to leave. There are also radioactive fields and if an entity spends too much time on them, they dies. Fields can not be trapped and radioactive at the same time. There are two different entities. Some of them are able to escape from trapped fields (E1) and some of them are immune for radioactivity (E2). Entities