didn't add the gallery, but rather the controls twice. oops

assignments/a3/src/main/java/Main.java

@@ -14,7 +14,7 @@ public class Main
     // create a layout panel to hold the views
     JPanel mainpanel = new JPanel(new BorderLayout(0, 0));
     window.getContentPane().add(mainpanel);
-    mainpanel.add(controls, BorderLayout.CENTER);
+    mainpanel.add(gallery, BorderLayout.CENTER);
     mainpanel.add(controls, BorderLayout.PAGE_START);
 
     // Setup the frame to do frame things