prevent string concatenation for disabled loggers

1 files changed, 2 insertions, 4 deletions

diff --git a/juick-server/src/main/java/rocks/xmpp/core/session/debug/LogbackDebugger.java b/juick-server/src/main/java/rocks/xmpp/core/session/debug/LogbackDebugger.java
index 4b2da8b7..3da660b2 100644
--- a/juick-server/src/main/java/rocks/xmpp/core/session/debug/LogbackDebugger.java
+++ b/juick-server/src/main/java/rocks/xmpp/core/session/debug/LogbackDebugger.java
@@ -11,22 +11,20 @@ import java.io.OutputStream;
  * Created by vitalyster on 17.11.2016.
  */
 public class LogbackDebugger implements XmppDebugger {
-
     private static final Logger logger = LoggerFactory.getLogger(LogbackDebugger.class);
 
     @Override
     public void initialize(XmppSession xmppSession) {
-
     }
 
     @Override
     public void writeStanza(String s, Object o) {
-        logger.info("OUT: " + s);
+        logger.info("OUT: {}", s);
     }
 
     @Override
     public void readStanza(String s, Object o) {
-        logger.info("IN: " + s);
+        logger.info("IN: {}", s);
     }
 
     @Override