public static <T> void addExceptionCallback(ListenableFuture<T> future, Runnable exceptionCallback, Executor executor)
    {
        requireNonNull(exceptionCallback, "exceptionCallback is null");

        addExceptionCallback(future, t -> exceptionCallback.run(), executor);
    }
public static <T> void addExceptionCallback(ListenableFuture<T> future, Runnable exceptionCallback, Executor executor)
    {
        requireNonNull(exceptionCallback, "exceptionCallback is null");

        addExceptionCallback(future, t -> exceptionCallback.run(), executor);
    }
public static < T > void addExceptionCallback ( ListenableFuture < T > future , Runnable exceptionCallback , Executor executor ) { requireNonNull ( exceptionCallback , "exceptionCallback is null" ) ; addExceptionCallback ( future , t -> exceptionCallback . run ( ) , executor ) ; }
Invokes the callback, using the specified executor, if the future fails.
Invokes the callback using the specified executor if the future fails .