Uses of Interface
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
Methods in java.util with parameters of type Observer Modifier and Type Method Description
addObserver(Observer o)Deprecated.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.
deleteObserver(Observer o)Deprecated.Deletes an observer from the set of observers of this object.