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Observer<U> Interface

  • Reference
Package:
system.fabric

Type Parameters

U

Observer class template parameter.

public interface Observer

A class can implement the Observer interface when it wants to be informed of changes in observable objects.

Method Summary

Modifier and Type Method and Description
void update(final Object sender, U arg)

This method is called whenever the observed object is changed.

Method Details

update

public void update(final Object sender, U arg)

This method is called whenever the observed object is changed.

Parameters:

sender - Observable object.
arg - an argument passed to the system.fabric.Observable#notifyObservers(Object, Object) method.

Applies to