U+F81D

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U+F81D is not a valid unicode character.
Encodings
HTML Entity (decimal) 
HTML Entity (hex) 
How to type in Microsoft Windows Alt +F81D
UTF-8 (hex) 0xEF 0xA0 0x9D (efa09d)
UTF-8 (binary) 11101111:10100000:10011101
UTF-16 (hex) 0xF81D (f81d)
UTF-16 (decimal) 63,517
UTF-32 (hex) 0x0000F81D (f81d)
UTF-32 (decimal) 63,517
C/C++/Java source code "\uF81D"
Python source code u"\uF81D"
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Java Data
string.toUpperCase()
string.toLowerCase()
Character.UnicodeBlock PRIVATE_USE_AREA
Character.charCount() 1
Character.getDirectionality() DIRECTIONALITY_LEFT_TO_RIGHT [0]
Character.getNumericValue() -1
Character.getType() 18
Character.isDefined() Yes
Character.isDigit() No
Character.isIdentifierIgnorable() No
Character.isISOControl() No
Character.isJavaIdentifierPart() No
Character.isJavaIdentifierStart() No
Character.isLetter() No
Character.isLetterOrDigit() No
Character.isLowerCase() No
Character.isMirrored() No
Character.isSpaceChar() No
Character.isSupplementaryCodePoint() No
Character.isTitleCase() No
Character.isUnicodeIdentifierPart() No
Character.isUnicodeIdentifierStart() No
Character.isUpperCase() No
Character.isValidCodePoint() Yes
Character.isWhitespace() No