--- old/src/java.base/share/classes/java/text/SimpleDateFormat.java	2019-01-16 14:08:51.703003721 -0800
+++ new/src/java.base/share/classes/java/text/SimpleDateFormat.java	2019-01-16 14:08:50.477978048 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2019, 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
@@ -1189,7 +1189,7 @@
             }
             break;
 
-        case PATTERN_MONTH:            // 'M' (context seinsive)
+        case PATTERN_MONTH:            // 'M' (context sensitive)
             if (useDateFormatSymbols) {
                 String[] months;
                 if (count >= 4) {
@@ -2033,7 +2033,7 @@
                         return index;
                     }
                 } else {
-                    Map<String, Integer> map = getDisplayNamesMap(field, locale);
+                    Map<String, Integer> map = getDisplayContextNamesMap(field, locale);
                     if ((index = matchString(text, start, field, map, calb)) > 0) {
                         return index;
                     }
@@ -2449,6 +2449,19 @@
         return map;
     }
 
+    // for 'M' pattern only
+    private Map<String, Integer> getDisplayContextNamesMap(int field, Locale locale) {
+        Map<String, Integer> map = calendar.getDisplayNames(field,
+            Calendar.SHORT_FORMAT | (forceStandaloneForm ? 0x8000 : 0), locale);
+        // Get LONG styles
+        Map<String, Integer> m = calendar.getDisplayNames(field,
+            Calendar.LONG_FORMAT | (forceStandaloneForm ? 0x8000 : 0), locale);
+        if (m != null) {
+            map.putAll(m);
+        }
+        return map;
+    }
+
     /**
      * After reading an object from the input stream, the format
      * pattern in the object is verified.