diff --git a/src/commandSystem/ElevatorListener.java b/src/commandSystem/ElevatorListener.java
new file mode 100644
index 0000000..9af97ea
--- /dev/null
+++ b/src/commandSystem/ElevatorListener.java
@@ -0,0 +1,8 @@
+package commandSystem;
+
+
+public interface ElevatorListener {
+	public void elevatorCall(int floor);
+	public void floorCall(int floor, Direction direction);
+	public void floorChange(Direction direction);
+}