diff --git a/src/main/org/insa/graph/Node.java b/src/main/org/insa/graph/Node.java
index f324e6a..6a93bdc 100644
--- a/src/main/org/insa/graph/Node.java
+++ b/src/main/org/insa/graph/Node.java
@@ -59,6 +59,7 @@ public class Node implements Comparable<Node> {
 
     /*
      * (non-Javadoc)
+     * 
      * @see java.lang.Object#equals(java.lang.Object)
      */
     @Override
@@ -71,6 +72,7 @@ public class Node implements Comparable<Node> {
 
     /*
      * (non-Javadoc)
+     * 
      * @see java.lang.Comparable#compareTo(java.lang.Object)
      */
     @Override
diff --git a/src/main/org/insa/graph/Point.java b/src/main/org/insa/graph/Point.java
index f5920f4..6a0db35 100644
--- a/src/main/org/insa/graph/Point.java
+++ b/src/main/org/insa/graph/Point.java
@@ -4,7 +4,7 @@ package org.insa.graph;
  * Class representing a point on Earth.
  *
  */
-public class Point {
+public final class Point {
 
     // Earth radius, in meters;
     private static final double EARTH_RADIUS = 6378137.0;
@@ -65,6 +65,7 @@ public class Point {
 
     /*
      * (non-Javadoc)
+     * 
      * @see java.lang.Object#toString()
      */
     @Override
diff --git a/src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java b/src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java
index 46ec02e..eb3eea5 100644
--- a/src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java
+++ b/src/main/org/insa/graph/io/BinaryGraphReaderInsa2018.java
@@ -8,8 +8,8 @@ import java.util.EnumMap;
 import org.insa.graph.AccessRestrictions;
 import org.insa.graph.AccessRestrictions.AccessMode;
 import org.insa.graph.AccessRestrictions.AccessRestriction;
-import org.insa.graph.ArcForward;
 import org.insa.graph.ArcBackward;
+import org.insa.graph.ArcForward;
 import org.insa.graph.Graph;
 import org.insa.graph.GraphInformation;
 import org.insa.graph.Node;
@@ -41,7 +41,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
         // the order correspond to the 4 bits value (i.e. FORBIDDEN is 0 or PRIVATE is
         // 2) - UKNOWN is not included because value above 6 (FORESTRY) are all
         // considered unknown.
-        final AccessRestriction[] allRestrictions = new AccessRestriction[]{
+        final AccessRestriction[] allRestrictions = new AccessRestriction[] {
                 AccessRestriction.FORBIDDEN, AccessRestriction.ALLOWED, AccessRestriction.PRIVATE,
                 AccessRestriction.DESTINATION, AccessRestriction.DELIVERY,
                 AccessRestriction.CUSTOMERS, AccessRestriction.FORESTRY };
@@ -49,7 +49,7 @@ public class BinaryGraphReaderInsa2018 extends BinaryReader implements GraphRead
         // The order of values inside this array is VERY IMPORTANT: The order is such
         // that each 4-bits group of the long value is processed in the correct order,
         // i.e. FOOT is processed first (4 lowest bits), and so on.
-        final AccessMode[] allModes = new AccessMode[]{ AccessMode.FOOT, null, AccessMode.BICYCLE,
+        final AccessMode[] allModes = new AccessMode[] { AccessMode.FOOT, null, AccessMode.BICYCLE,
                 AccessMode.SMALL_MOTORCYCLE, AccessMode.AGRICULTURAL, AccessMode.MOTORCYCLE,
                 AccessMode.MOTORCAR, AccessMode.HEAVY_GOODS, null, AccessMode.PUBLIC_TRANSPORT };