Top Description Methods
java.util

public Interface Observer

Annotations
@Deprecated
since:9

Deprecated

since 9.

This interface has been deprecated. See the Observable class for further information.

A class can implement the Observer interface when it wants to be informed of changes in observable objects.
Author
Chris Warth
Since
1.0
See Also
java.util.Observable

Method Summary

Modifier and TypeMethod and Description
public void
update(Observable
the observable object.
o, Object
an argument passed to the notifyObservers method.
arg)
References Deprecated Observable is deprecated or references (maybe indirectly) at least one deprecated element.

This method is called whenever the observed object is changed.

Method Detail

updateback to summary
public void update(Observable o, Object arg)

References Deprecated

Observable is deprecated or references (maybe indirectly) at least one deprecated element.

See corresponding docs for further information.

This method is called whenever the observed object is changed. An application calls an Observable object's notifyObservers method to have all the object's observers notified of the change.

Parameters
o:Observable

the observable object.

arg:Object

an argument passed to the notifyObservers method.