8303018: Unicode Emoji Properties

Reviewed-by: prr, erikj, rriggs

src/java.base/share/classes/java/lang/CharacterDataPrivateUse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2023, 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
@@ -60,6 +60,30 @@ class CharacterDataPrivateUse extends CharacterData {
         return false;
     }
 
+    boolean isEmoji(int ch) {
+        return false;
+    }
+
+    boolean isEmojiPresentation(int ch) {
+        return false;
+    }
+
+    boolean isEmojiModifier(int ch) {
+        return false;
+    }
+
+    boolean isEmojiModifierBase(int ch) {
+        return false;
+    }
+
+    boolean isEmojiComponent(int ch) {
+        return false;
+    }
+
+    boolean isExtendedPictographic(int ch) {
+        return false;
+    }
+
     int toLowerCase(int ch) {
         return ch;
     }