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.