diff --git a/src/com/rkcsd/apps/demo/main/Logger.java b/src/com/rkcsd/apps/demo/main/Logger.java
new file mode 100644
index 0000000..694f5bf
--- /dev/null
+++ b/src/com/rkcsd/apps/demo/main/Logger.java
@@ -0,0 +1,4 @@
+package com.rkcsd.apps.demo.main;
+
+public class Logger {
+}
diff --git a/src/com/rkcsd/apps/demo/main/Main.java b/src/com/rkcsd/apps/demo/main/Main.java
index eb23868..d942961 100644
--- a/src/com/rkcsd/apps/demo/main/Main.java
+++ b/src/com/rkcsd/apps/demo/main/Main.java
@@ -7,6 +7,7 @@ public class Main {
     public static void main(String[] args) {
 
         MainWindow w = new MainWindow();
+        MainWindow w2 = new MainWindow();
 
     }