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\uFFFF, where FFFF is the
hexidecimal value of the code point you want to match. For example,
\u6771 matches the Han character for east.
Alternatively, you can specify a code point using Perl-style hex notation,
\x{...}. For example:
String hexPattern = "\x{" + Integer.toHexString(codePoint) + "}";
\p{prop}.
You can match a single character not belonging to a particular
category with the expression \P{prop}.
The three supported property types are scripts, blocks, and a "general" category.
script keyword, or the
sc short form, for example, \p{script=Hiragana}.
Alternatively, you can prefix the script name with the string
Is, such as \p{IsHiragana}.
Valid script names supported by Pattern
are those accepted by
UnicodeScript.forName.
block keyword, or
the blk short form, for example, \p{block=Mongolian}.
Alternatively, you can prefix the block name with the string
In, such as \p{InMongolian}.
Valid block names supported by Pattern are those
accepted by
UnicodeBlock.forName.
Is.
For example, IsL matches the category of Unicode letters.
Categories can also be specified by using the
general_category keyword, or the short form gc.
For example, an uppercase letter can be matched using
general_category=Lu or gc=Lu.
Supported categories are those of
The Unicode Standard in the version specified by the
Character class.
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