uml class diagram java

Currently the more popular UML modeling tools include Visio, Rational Rose, PowerDesigner, EA, and so on, basically enterprise-class software, powerful, I have only used Visio, so do not add to their characteristics or similarities and differences. For more formal scenarios, such as graphics as part of a project document, the software listed above is recommended. When we encounter more complex code logic or

I haven't studied UML for many days because of the exam, and I feel a little unfamiliar. So hurry up and make up for my inner emptiness. We have to take the test this afternoon, and there is still nearly two hours in the middle. Now I will share with you my understanding of the object diagrams in UML. Of course, I have concluded that I have never drawn any picture, in the future, we will add the picture in

make it clearer. Architecture Modeling Modeling the architecture (ProgramHierarchical) is a more meaningful use of the UML package diagram. Architecture is the core logical structure of a software system. Common architecture modes include hierarchy, MVC, pipeline, blackboard, and microkernel. In application software, hierarchy and MVC A package chart is a tool that keeps the system arc

Activity diagram, her English name is active Diagram, a workflow that describes the implementation of a business use case, which is one of the none of the diagrams used in the UML family to model dynamic aspects of the system. To give a simple example, to build a work flow for example, first of all, we have to select an address, and then commissioned an architec

The activity diagram is another common tool used by UML to model the dynamic behavior of the system. It describes the activity sequence and shows the control flow from one activity to another. An activity chart is essentially a flow chart. The activity diagram focuses on the control flow from one activity to another. It is an internal processing-driven process. T

Class diagrams and sequence diagrams are directly associated with program code in software system design. To be precise, program code is directly generated by class diagrams, A Sequence Chart can define a class chart method. The use case diagram is used to describe system functions and has no direct relationship with t

SummaryThis article briefly analyzes and designs an example of a "Student Course Selection System" to illustrate the two functions and forms of a class diagram in a UML diagram, in order to clarify the misunderstandings and confusions that some friends may have on class diag

This short article is well written. it can be said that using PHP to explain UML (or conversely) is an innovation. through this article, I also found a good site: www.phppatterns.com. I am reading the UML User Guide (TheUnifiedModelingLanguageUserGuide) Synt. This short article is well written. it can be said that using PHP to explain UML (or conversely) is an in

Sequence diagrams are primarily used to show the order in which objects interact with each other.A sequence diagram represents an interaction as a two-dimensional graph. The vertical is the timeline, and the time extends downward along the vertical bar. The horizontal axis represents the meta roles of individual objects in collaboration. The class meta role is represented by a lifeline. When an object is pr

Sequence diagrams are primarily used to show the order in which objects interact with each other.A sequence diagram represents an interaction as a two-dimensional graph. The vertical is the timeline, and the time extends downward along the vertical bar. The horizontal axis represents the meta roles of individual objects in collaboration. The class meta role is represented by a lifeline. When an object is pr

Sequence diagrams are primarily used to show the order in which objects interact with each other.A sequence diagram represents an interaction as a two-dimensional graph. The vertical is the timeline, and the time extends downward along the vertical bar. The horizontal axis represents the meta roles of individual objects in collaboration. The class meta role is represented by a lifeline. When an object is pr

The drink remodeling series has been completed by about 1/3, and in these articles I used a few simple class diagrams to describe refactoring strategies. In a later article, I might use a slightly more complex UML class diagram to introduce. But before I do, I think it's necessary to introduce the 6 major relationships

multiple links1Written by one party1, Write by multiple partiesN; Multiple-to-many relationships are written in the direction of the two physical connections.N, m UML: The first use case diagram (Use Case digoal) The second type is static digraphs, including class graphs, object graphs, and packet graphs. The third type is the behavior

use case diagram. composition: System boundaries. Participants. Case. Relationship. Participant: Actor is not a person, but a role to play when participating in a use case. If the action of one role is done by another role agent, establish a dependency between the role and the other role. How to identify the participants. who is providing information to the system? Who gets information from the system. Who operating system. What external resource sy

At the beginning of the painting is really tangled, at that time was forced to draw under the master, but it is also good, in the strong request of master, I learned how to use the EA, but also for a learning a new software has a better way to find some video, or text materials to help us learn to use the new software.Each time the drawing has a new understanding, after this and the regulation of the consolidation of software requirements have a deeper understanding, we have so many layers is to

This essay is good, the use of PHP to explain the UML (or conversely) can be said to be an innovation, through this article, I also found a good station: www.phppatterns.com. The translation of the UML terms comes from the Unified Modeling Language User Guide, which I am looking at. UML (Unified Modeling Language, Unified Modeling Language) is a mechanism for re

. For this long square lattice, I have never understood what it actually means. I encountered an open-minded explanation on "Baidu Encyclopedia:You can think of activation as a "{}",From the beginning to the end, it can be understood as a method, an action; The lifeline is used to describe the time when an object exists. Add the destroy symbol below to delete the object or recycle the object. It is actually a Roman's dragon nest. When it's done, let's leave. There are four types of messages, but

Preface In Ooa and Ood, UML has been widely used in system analysis and design. In UML's 9 kinds of graphs, the class diagram is one of the most important and most commonly used graphs. However, in the chat with some friends, especially beginners, I found that many friends have some misunderstandings and puzzles about the function and the method of using the

. Proxy modeIntent: Provides a proxy for other objects to control access to this object.21. Single case (Singleton) modeIntent: Ensure that a class has only one instance and provides a global access point to access it.22. Status (State) modeIntent: Allows an object to change its behavior when its internal state changes.23. Policy (strategy) modeIntent: Define a series of algorithms, encapsulate them one by one, and make them interchangeable with each

Use case diagram Structure 1Roles: Personnel roles-people and events; Roles are not necessarily limited to people. They can also be things or things. 2. Use Case: function description; Each use case describes a complete system service. 3System boundaries 4Relationship: the relationship between executors and use cases. Generalization Dependency Association Aggregation and combination Implementation You can read books, roles, system boun