Changed error messaging to use logger. Ref #69

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/utils/Copy.java

@@ -18,6 +18,10 @@
  */
 package de.hft.stuttgart.citydoctor2.utils;
 
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -26,6 +30,8 @@ import java.io.ObjectOutputStream;
 
 public class Copy {
 
+	private static final Logger logger = LogManager.getLogger(Copy.class);
+
 	private Copy() {
 	}
 
@@ -41,16 +47,11 @@ public class Copy {
 			ByteArrayInputStream in = new ByteArrayInputStream(byteArray);
 			ObjectInputStream ois = new ObjectInputStream(in);
 			return (T) ois.readObject();
-		} catch (IOException e) {
-			e.printStackTrace();
-		} catch (ClassNotFoundException e) {
-			e.printStackTrace();
+		} catch (IOException | ClassNotFoundException e) {
+			logger.log(Level.ERROR, e.getMessage(), e);
 		}
 		throw new IllegalStateException();
 
-//		CopyHandler handler = new CopyHandler();
-//		return handler.copy(original);
-
 	}
 
 }