--- a/src/name/blackcap/exifwasher/MainFrame.kt	Wed Apr 08 21:31:30 2020 -0700
+++ b/src/name/blackcap/exifwasher/MainFrame.kt	Thu Apr 09 18:20:34 2020 -0700
@@ -7,12 +7,13 @@
 import java.awt.datatransfer.DataFlavor
 import java.awt.datatransfer.Transferable
 import java.awt.datatransfer.UnsupportedFlavorException
+import java.awt.event.WindowEvent
+import java.awt.event.WindowListener
 import java.io.File
 import java.io.IOException
-import javax.swing.JFrame
-import javax.swing.TransferHandler
-
-class MainFrame: JFrame {
+import java.util.logging.Level
+import java.util.logging.Logger
+import javax.swing.*
 
 /* the main frame itself */
 class MainFrame : JFrame(Application.MYNAME) {
@@ -38,7 +39,7 @@
     }
 
     /* acts on dragged files */
-    private class MyTransferHandler : TransferHandler {
+    private class MyTransferHandler : TransferHandler() {
         override fun canImport(support: TransferHandler.TransferSupport): Boolean {
             return support.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
         }
@@ -48,7 +49,7 @@
                 return false
             }
             val files = try {
-                support.transferable.getTransferData(DataFlavor.javaFileListFlavor) as java.util.List<File>
+                support.transferable.getTransferData(DataFlavor.javaFileListFlavor) as List<File>
             } catch (e: UnsupportedFlavorException) {
                 return false
             } catch (e: IOException) {