Speed optimalisation and fixed the damn thing!

Barometer.java

@@ -1,3 +1,4 @@
+package weerstation;
 import java.util.ArrayList;
 
 public class Barometer extends Grootheid{
@@ -7,21 +8,23 @@ public class Barometer extends Grootheid{
     public Barometer(Measurement measurement1, ArrayList<Measurement> measurement2){
         list = new ArrayList<Double>();
         updateRecent(measurement1);
-        update24Hour(measurement2);
+        updatePeriod(measurement2);
     }
-
     
     public void updateRecent(Measurement measurement1){
         setCurrent(measurement1.getBarometer());
     }
-    public void update24Hour(ArrayList<Measurement> measurement2){
+    public void updatePeriod(ArrayList<Measurement> measurement2){
         createList(measurement2);
-        calculateMaxMinAvg(list);
+        calculateMaxMin(list);
+        setMode(StatisticsCalculator.modus(list));
     }
     
     public void display(){
         super.display();
-        GUIboard.writePageToMatrix("Luchtdruk", "Gemiddelde: " + getAvg(), "");
+		GUIboard.clearLeft();
+		GUIboard.clearRight();
+        GUIboard.writePageToMatrix("Luchtdruk", "Modus: " + getMode(), "");
     }
     
     public void displayGraph()