diff --git a/bin/de/hottis/measurementCollector/DatabaseEngine.class b/bin/de/hottis/measurementCollector/DatabaseEngine.class
index fbf930b..aefe6bd 100644
Binary files a/bin/de/hottis/measurementCollector/DatabaseEngine.class and b/bin/de/hottis/measurementCollector/DatabaseEngine.class differ
diff --git a/src/de/hottis/measurementCollector/DatabaseEngine.java b/src/de/hottis/measurementCollector/DatabaseEngine.java
index 9e2c05d..1fe6bbe 100644
--- a/src/de/hottis/measurementCollector/DatabaseEngine.java
+++ b/src/de/hottis/measurementCollector/DatabaseEngine.java
@@ -6,11 +6,9 @@ import java.sql.PreparedStatement;
 import java.sql.SQLException;
 import java.sql.Timestamp;
 import java.time.LocalDateTime;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.Properties;
 import java.util.Timer;
-import java.util.stream.Collectors;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;