Java™ Platform
Standard Ed. 8

Uses of Interface
java.util.Observer

  • Packages that use Observer 
    Package Description
    java.util
    Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
    • Uses of Observer in java.util

      Methods in java.util with parameters of type Observer 
      Modifier and Type Method and Description
      void Observable.addObserver(Observer o)
      Adds an observer to the set of observers for this object, provided that it is not the same as some observer already in the set.
      void Observable.deleteObserver(Observer o)
      Deletes an observer from the set of observers of this object.
Java™ Platform
Standard Ed. 8

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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