--- old/src/java.desktop/windows/classes/sun/print/PrintServiceLookupProvider.java	2020-03-30 06:34:39.779452800 -0700
+++ new/src/java.desktop/windows/classes/sun/print/PrintServiceLookupProvider.java	2020-03-30 06:34:39.345355700 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -356,10 +356,10 @@
         return defaultPrintService;
     }
 
-    class PrinterChangeListener implements Runnable {
-        long chgObj;
-        PrinterChangeListener() {
-            chgObj = notifyFirstPrinterChange(null);
+    private final class PrinterChangeListener implements Runnable {
+        private final long chgObj;
+        private PrinterChangeListener() {
+            chgObj = notifyFirstPrinterChange();
         }
 
         @Override
@@ -446,7 +446,7 @@
 
     private native String getDefaultPrinterName();
     private native String[] getAllPrinterNames();
-    private native long notifyFirstPrinterChange(String printer);
+    private native long notifyFirstPrinterChange();
     private native void notifyClosePrinterChange(long chgObj);
     private native int notifyPrinterChange(long chgObj);
     private native String[] getRemotePrintersNames();