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A UML editor online. Class Diagram. Use Case Diagram. Sequence Diagram. Activity Diagram. Deployment Diagram. Component Diagram. State Machine Diagram. Package Diagram. Inline editing of shape name e.
Use Case and members e. Attribute Quick shape creation with Resource Catalog Group shapes and move together 1-Click-to-align and distribute shapes Drag-and-drop sequence message creation. Inline editing of class members Class members are selectable and editable compartments managed within a class shape, not free text labels. Associations are typically named using a verb or verb phrase which reflects the real world problem domain.
The figure below shows an example of simple association. The relationship is displayed as a solid line connecting the two classes. The figure below shows an example of aggregation. The relationship is displayed as a solid line with a unfilled diamond at the association end, which is connected to the class that represents the aggregate.
The figure below shows an example of composition. The relationship is displayed as a solid line with a filled diamond at the association end, which is connected to the class that represents the whole or composite.
An object of one class might use an object of another class in the code of a method. If the object is not stored in any field, then this is modeled as a dependency relationship.
The figure below shows an example of dependency. The relationship is displayed as a dashed line with an open arrow. The figure below shows another example of dependency.
The Person class might have a hasRead method with a Book parameter that returns true if the person has read the book perhaps by checking some database. Realization is a relationship between the blueprint class and the object containing its respective implementation level details. This object is said to realize the blueprint class. In other words, you can understand this as the relationship between the interface and the implementing class.
For example, the Owner interface might specify methods for acquiring property and disposing of property. The Person and Corporation classes need to implement these methods, possibly in very different ways. You've learned what a Class Diagram is and how to draw a Class Diagram. It's time to draw a Class Diagram of your own. It's easy-to-use and intuitive. We use cookies to offer you a better experience.
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