How can I draw it using starUml
I am using staruml, I find it difficult to draw a perfect UML class diagram when the relationship is complex. uml diagram
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If your UML diagrams are getting too complex, try breaking digram into multiple diagrams, each covering a smaller subset of classes. You might want to move your classes into separate packages to keep them organized. In Star UML (and other UML tools) classes can appear in more than one diagram, so you can include all classes from the same package plus classes from the differnt package's public interface.
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