#observer pattern implementation in java

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Observer Pattern in Java

Observer Pattern in Java

The Observer pattern defines one to many relationship between a group of objects so that when one objects changes state, all of its dependents are notified.     There two types of actors here :

“Subject and Observers”

The Subject manages some sort of data and the Observers have subscribed to be updated when the data changes.

  Create Subject interface

  For implementing the Subject, we need to…

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