diff --git a/src/main/java/proto/Main.java b/src/main/java/proto/Main.java
index 022625e..b064fdc 100644
--- a/src/main/java/proto/Main.java
+++ b/src/main/java/proto/Main.java
@@ -1,4 +1,5 @@
 package proto;
+import javax.swing.JFrame;
 
 public class Main {
 
@@ -7,6 +8,10 @@
 		for (int i = 0; i < 4; i++) {
 			System.out.println(ins[i].get());
 		}
+		JFrame frame=new JFrame("test");
+	    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+	    frame.setSize(400,400);
+	    frame.setVisible(true);
 	}
 
 }