--- a/test/sun/security/tools/jarsigner/warnings/Test.java	Tue Oct 11 09:11:34 2016 +0000
+++ b/test/sun/security/tools/jarsigner/warnings/Test.java	Mon Nov 14 10:29:58 2016 -0800
@@ -197,4 +197,21 @@
         cmd.addAll(Arrays.asList(args));
         return ProcessTools.executeCommand(cmd.toArray(new String[cmd.size()]));
     }
+
+    protected OutputAnalyzer keytool(String... cmd) throws Throwable {
+        return tool(KEYTOOL, cmd);
+    }
+
+    protected OutputAnalyzer jarsigner(String... cmd) throws Throwable {
+        return tool(JARSIGNER, cmd);
+    }
+
+    private OutputAnalyzer tool(String tool, String... args) throws Throwable {
+        List<String> cmd = new ArrayList<>();
+        cmd.add(tool);
+        cmd.add("-J-Duser.language=en");
+        cmd.add("-J-Duser.country=US");
+        cmd.addAll(Arrays.asList(args));
+        return ProcessTools.executeCommand(cmd.toArray(new String[cmd.size()]));
+    }
 }