From 423f3f0dff21ff2be01d05a327f0524d92fc19ee Mon Sep 17 00:00:00 2001
From: GoToLoop <GoToLoop@users.noreply.github.com>
Date: Mon, 11 Jul 2016 04:51:10 -0300
Subject: [PATCH] Update CallbackListener.java

@FunctionalInterface
---
 src/controlP5/CallbackListener.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/controlP5/CallbackListener.java b/src/controlP5/CallbackListener.java
index f1399ef..e2eb645 100755
--- a/src/controlP5/CallbackListener.java
+++ b/src/controlP5/CallbackListener.java
@@ -34,7 +34,7 @@ package controlP5;
  * @example use/ControlP5callback
  * @see controlP5.ControlP5#addCallback(CallbackListener)
  */
-public interface CallbackListener {
+@FunctionalInterface public interface CallbackListener {
 
 	public void controlEvent( CallbackEvent theEvent );