uml diagram java

Object-oriented modelObject-oriented model is a model that uses UML (Unified Modeling Language) to describe the system structure, and it realizes the working state of the system from different angles. These graphs facilitate information exchange between users, managers, system analysts, developers, testers, and other personnel. This article mainly introduces use case diagram, Sequence

Through the static diagram and behavior diagram introduced in previous blogs, we can use UML to describe the static structure and dynamic behavior of a system. At this time, we have alreadyGraphical representation of the entire structure of a typical Surface-to-face object system. At this point, the software development stage has reached the implementation s

the relationships between classes Inheritance Relationship An inheritance relationship is the most understandable relationship. The picture is like this. The object-oriented argument is the is-a relationship. That is to say Class2 is a Class1. In C + + we say that Class2 is a derived class of Class1, or that Class1 is the base class for Class2. Aggregation and Composition Start with a relationship that is easy to understand. There is often a case where a class is a data member of another class.

world to the code realization excessively. ---> such as: The attribute of the class is described in words, and the behavior functionFour: Implement Layer class Diagram---> Implementation layer views that the class is the description of the implementation code, and the classes in the class diagram map directly to the executable code. ---> At this level, classes must explicitly adopt that implementation lang

System Modeling must be described in terms of system structure and behavior,Static diagram based on the previous UML diagramBlog learning, we canDrawStatic structure of software systemsIn this case, how should we deal with its behavior activities? This article will be used hereArticleInvolvedUMLThe behavior graph is displayed. A behavior diagram is used to d

Object-oriented model Object-oriented model is a model that uses UML (Unified Modeling Language) to describe the system structure, which realizes the working state of the system from different angles. These graphics help communicate information between users, managers, system analysts, developers, testers, and others. This article mainly introduces use case diagram, Sequence

make the image easier to read. (For example, the logical process of the model in UML 1.x is too complex and sometimes impossible to complete. Significant progress has been made in serialization logic modeling due to changes in the symbol set of the sequence diagram in UML 2 ).Note the text I mentioned above: "The uml2.0 draft Specification has been adopted ." In

commodity to a product that has an added class, registering a user registration class, and so on. (3) boundary class : The boundary class is used to abstract the interaction objects between the external user and the system, including the interface classes, such as dialog boxes, windows, menus, etc. In the early stages of object-oriented analysis and design, it is common to identify entity classes first, and to draw initial class diagrams, where class diagrams can also be called domain models, i

first, the concept use case diagram (Diagram): Primarily used to describe the behavior of systems and the relationships between functions, is a graph that describes the relationship between participants (Actor) and use cases, and use cases and use cases. Use case diagram = actor + use case + Relationship II, use use case dia