Abstract
The observer pattern is a common design pattern used in many applications. It allows an object to notify any number of other objects of changes or other events, without a strong coupling between the subject and the observer. Consider the alternative, where the observee needs to individually call each observer separately. This does not scale well to a large number of observers and strongly couples the subject that is being observed to the observers.
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© 2019 Jan Beernink and Arjan Tijms
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Beernink, J., Tijms, A. (2019). Events. In: Pro CDI 2 in Java EE 8. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-4363-3_5
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DOI: https://doi.org/10.1007/978-1-4842-4363-3_5
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Publisher Name: Apress, Berkeley, CA
Print ISBN: 978-1-4842-4362-6
Online ISBN: 978-1-4842-4363-3
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