--- old/test/langtools/tools/javac/diags/CheckResourceKeys.java	2018-04-12 12:51:14.912915183 -0700
+++ new/test/langtools/tools/javac/diags/CheckResourceKeys.java	2018-04-12 12:51:14.636903136 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2018, 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
@@ -118,7 +118,8 @@
     void findDeadKeys(Set<String> codeStrings, Set<String> resourceKeys) {
         String[] prefixes = {
             "compiler.err.", "compiler.warn.", "compiler.note.", "compiler.misc.",
-            "javac."
+            "javac.",
+            "launcher.err."
         };
         for (String rk: resourceKeys) {
             // some keys are used directly, without a prefix.
@@ -396,7 +397,7 @@
     Set<String> getResourceKeys() {
         Module jdk_compiler = ModuleLayer.boot().findModule("jdk.compiler").get();
         Set<String> results = new TreeSet<String>();
-        for (String name : new String[]{"javac", "compiler"}) {
+        for (String name : new String[]{"javac", "compiler", "launcher"}) {
             ResourceBundle b =
                     ResourceBundle.getBundle("com.sun.tools.javac.resources." + name, jdk_compiler);
             results.addAll(b.keySet());