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In software engineering, a class diagram [1] in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects. The class diagram is the main building block of object-oriented modeling.
Visibility - the availability for access of elements in a model. Typically used to limit the visibility of features defined by a Class (e.g., attributes, operations). When applied to features defined by a class, the standard options are: private (-): available only within the Class in which it was defined. This is the most limited visibility
UML provides a standard notation for many types of diagrams which can be roughly divided into three main groups: behavior diagrams, interaction diagrams, and structure diagrams. The creation of UML was originally motivated by the desire to standardize the disparate notational systems and approaches to software design.
The domain chart provides a view of the domain being modeled, and the dependencies it has on other domains. The class diagram defines the classes and class associations for the domain. The statechart diagram defines the states, events, and state transitions for a class or class instance.
PlantUML source code.. @startuml class Example { +Foo #Bar -Baz +Foo() #Bar() -Baz() } note left of Example::Foo This field is public end note note left of Example::Bar This field is protected end note note left of Example::Baz This field is private end note note right of Example::Foo() This method is public end note note right of Example::Bar() This method is protected end note note right of ...
Class diagram – A class diagram is a type of static structure UML diagram that describes the structure of a system by showing the system's classes, its attributes, and the relationships between the classes. The messages and classes identified through the development of the sequence diagrams can serve as input to the automatic generation of ...
A sample UML class and sequence diagram for the Iterator design pattern. [ 4 ] In the above UML class diagram , the Client class refers (1) to the Aggregate interface for creating an Iterator object ( createIterator() ) and (2) to the Iterator interface for traversing an Aggregate object ( next(),hasNext() ).
Figure 6: UML state diagram of the keyboard state machine with internal transitions In the absence of entry and exit actions, internal transitions would be identical to self-transitions (transitions in which the target state is the same as the source state).
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