--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	Tue Mar 14 08:19:41 2017 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	Tue Mar 14 10:51:19 2017 +0100
@@ -399,6 +399,30 @@
         }
     },
 
+    DEFAULT_MODULE_FOR_CREATED_FILES("--default-module-for-created-files",
+                                     "opt.arg.default.module.for.created.files",
+                                     "opt.default.module.for.created.files", EXTENDED, BASIC) {
+        @Override
+        public void process(OptionHelper helper, String option, String arg) throws InvalidValueException {
+            String prev = helper.get(DEFAULT_MODULE_FOR_CREATED_FILES);
+            if (prev != null) {
+                throw helper.newInvalidValueException("err.option.too.many",
+                                                      DEFAULT_MODULE_FOR_CREATED_FILES.primaryName);
+            } else if (arg.isEmpty()) {
+                throw helper.newInvalidValueException("err.no.value.for.option", option);
+            } else if (getPattern().matcher(arg).matches()) {
+                helper.put(DEFAULT_MODULE_FOR_CREATED_FILES.primaryName, arg);
+            } else {
+                throw helper.newInvalidValueException("err.bad.value.for.option", option, arg);
+            }
+        }
+
+        @Override
+        public Pattern getPattern() {
+            return Pattern.compile("[^,].*");
+        }
+    },
+
     X("--help-extra -X", "opt.X", STANDARD, INFO) {
         @Override
         public void process(OptionHelper helper, String option) throws InvalidValueException {