diff --git a/src/main/java/edu/ntnu/idi/idatt/Controller/exchangePageController.java b/src/main/java/edu/ntnu/idi/idatt/Controller/exchangePageController.java
new file mode 100644
index 0000000..4f8c5cc
--- /dev/null
+++ b/src/main/java/edu/ntnu/idi/idatt/Controller/exchangePageController.java
@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.Controller;
+
+public class exchangePageController {
+}
diff --git a/src/main/java/edu/ntnu/idi/idatt/Controller/mainPageController.java b/src/main/java/edu/ntnu/idi/idatt/Controller/mainPageController.java
new file mode 100644
index 0000000..c1162c7
--- /dev/null
+++ b/src/main/java/edu/ntnu/idi/idatt/Controller/mainPageController.java
@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.Controller;
+
+public class mainPageController {
+}
diff --git a/src/main/java/edu/ntnu/idi/idatt/Observer.java b/src/main/java/edu/ntnu/idi/idatt/Observer.java
new file mode 100644
index 0000000..24b264b
--- /dev/null
+++ b/src/main/java/edu/ntnu/idi/idatt/Observer.java
@@ -0,0 +1,6 @@
+package edu.ntnu.idi.idatt;
+
+public interface Observer {
+
+    void update();
+}
\ No newline at end of file
diff --git a/src/main/java/edu/ntnu/idi/idatt/View/exchangePage.java b/src/main/java/edu/ntnu/idi/idatt/View/exchangePage.java
new file mode 100644
index 0000000..d274afe
--- /dev/null
+++ b/src/main/java/edu/ntnu/idi/idatt/View/exchangePage.java
@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.View;
+
+public class exchangePage {
+}
diff --git a/src/main/java/edu/ntnu/idi/idatt/View/main_page.java b/src/main/java/edu/ntnu/idi/idatt/View/mainPage.java
similarity index 59%
rename from src/main/java/edu/ntnu/idi/idatt/View/main_page.java
rename to src/main/java/edu/ntnu/idi/idatt/View/mainPage.java
index 2ee12f8..733d0cb 100644
--- a/src/main/java/edu/ntnu/idi/idatt/View/main_page.java
+++ b/src/main/java/edu/ntnu/idi/idatt/View/mainPage.java
@@ -1,4 +1,4 @@
 package edu.ntnu.idi.idatt.View;
 
-public class main_page {
+public class mainPage {
 }