diff --git a/lib/mysql-connector-j-9.3.0.jar b/lib/mysql-connector-j-9.3.0.jar
new file mode 100644
index 0000000..b7f8142
Binary files /dev/null and b/lib/mysql-connector-j-9.3.0.jar differ
diff --git a/src/Main.java b/src/Main.java
index 7ff7d2b..2bb6f82 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,10 +1,19 @@
-import javax.swing.*;
+// Edited by JunRong for Assignment 2
+import javax.swing.*; // Import Swing library for GUI components
 
 public class Main {
     public static void main(String[] args) {
+
+        // Create a new window from the AppGUI class
         AppGUI window = new AppGUI();
+    
+        // Adjust window size to fit components
         window.pack();
+     
+        // Display the window on the screen
         window.setVisible(true);
+    	
+        // Close program when window is closed
         window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     }
 }
\ No newline at end of file