--- old/src/java.base/share/classes/java/lang/Character.java	2018-12-11 09:57:17.120304704 -0800
+++ new/src/java.base/share/classes/java/lang/Character.java	2018-12-11 09:57:15.805278106 -0800
@@ -681,11 +681,12 @@
      */
     public static final class UnicodeBlock extends Subset {
         /**
-         * 649  - the expected number of entities
+         * 667  - the expected number of entities
          * 0.75 - the default load factor of HashMap
          */
+        private static final int MAP_CAPACITY = (int)(667 / 0.75f + 1.0f);
         private static Map<String, UnicodeBlock> map =
-                new HashMap<>((int)(649 / 0.75f + 1.0f));
+                new HashMap<>(MAP_CAPACITY);
 
         /**
          * Creates a UnicodeBlock with the given identifier name.