diff --git a/APED/app/src/main/java/com/example/aped/MainActivity.java b/APED/app/src/main/java/com/example/aped/MainActivity.java
index f0d567a..74c4c32 100644
--- a/APED/app/src/main/java/com/example/aped/MainActivity.java
+++ b/APED/app/src/main/java/com/example/aped/MainActivity.java
@@ -91,11 +91,9 @@ public class MainActivity extends AppCompatActivity {
             case R.id.nav_favorite_IOs:
                 graph.setStartDestination(R.id.nav_favorite_IOs);
                 break;
-
             case R.id.nav_plots:
                 graph.setStartDestination(R.id.nav_plots);
                 break;
-
             default:
                 graph.setStartDestination(R.id.nav_all_IOs);
                 break;
diff --git a/APED/app/src/main/java/com/example/aped/utils/XMLHandler.java b/APED/app/src/main/java/com/example/aped/utils/XMLHandler.java
index dbeed46..bedb3fc 100644
--- a/APED/app/src/main/java/com/example/aped/utils/XMLHandler.java
+++ b/APED/app/src/main/java/com/example/aped/utils/XMLHandler.java
@@ -71,12 +71,12 @@ public class XMLHandler implements IXML {
     }
 
     /**
-     * reads the buffer size from the XML file
+     * Reads the buffer size from the XML file.
      * @param deviceName the name of the relevant device
      * @return the buffer size as an {@link Integer}
      */
     @Override
-    public int getBufferSize(String deviceName) {
+    public int getBufferSize(final String deviceName) {
         XPathFactory xPathFactory = XPathFactory.newInstance();
         XPath xPath = xPathFactory.newXPath();
         try {