com.google.gwt.core.client
Interface Callback<T,F>

Type Parameters:

T - The type returned on success

F - The type returned on failure

public interface Callback<T,F>

A callback for any asynchronous call that can result in success or failure.

onFailure

void onFailure(F reason)

Called when an asynchronous call fails to complete normally.

Parameters:

reason - failure encountered

onSuccess

void onSuccess(T result)

Called when an asynchronous call completes successfully.

Parameters:

result - the value returned