Use a class diagram to make a general model of the structure of an application that specifies the system's classes, its attributes and methods, and the relationships between objects.Â
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Following are the shapes on the UML Class stencil.
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Shape |
Description |
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Describes a set of objects with similar structure, behavior, and relationships. The name of a class must be unique within its package. The class shape starts as a rectangle with three rows. The name of the class is in the top row. The other two rows are for methods or operations that the class may use. |
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Describes an attribute or operation. |
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Used in a class shape to separate operations from attributes. |
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Specifies the externally visible operations of a class, component, package, or other element without specifying internal structure. |
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Describes a data type consisting of a set of named values. |
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Represents the basic organizing element of a UML model. It provides a namespace for the grouped elements. Each element belongs to only one package, and one package can be nested in another. |
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Represents a package in a process. |
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Used as a diagram comment that has no semantic influence on the model elements. |
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Indicates that the source type inherits from the target type. |
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Indicates that the source type realizes the target interface. |
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Represents a general relationship between instances of the classes. |
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Represents a relationship that flows in only one direction between instances of the classes. |
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Indicates that the object at the end with the diamond shape contains references to the object at the other end. If it contains that object exclusively, use a Composition shape instead. |
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Indicates that the source type depends on the target type. |
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Indicates that the source type has parts of the target type. |
