Summary

Add @spec tags to Emoji related methods in java.lang.Character class

Problem

These methods in java.lang.Character class:

isEmoji(int)
isEmojiPresentation(int)
isEmojiModifier(int)
isEmojiModifierBase(int)
isEmojiComponent(int)
isExtendedPictographic(int)

implement Unicode Emoji standard, but do not have @spec tag in their method descriptions.

Solution

Add @spec tags that link to Unicode Emoji standard site.

Specification

Add the following @spec tags to each method:

    * @spec https://unicode.org/reports/tr51/ Unicode Emoji