U+10FFFE

previous character

U+10FFFE is not a valid unicode character.
Encodings
HTML Entity (decimal) 
HTML Entity (hex) 
How to type in Microsoft Windows Alt +10FFFE
UTF-8 (hex) 0xF4 0x8F 0xBF 0xBE (f48fbfbe)
UTF-8 (binary) 11110100:10001111:10111111:10111110
UTF-16 (hex) 0xDBFF 0xDFFE (dbffdffe)
UTF-16 (decimal) 56,319 57,342
UTF-32 (hex) 0x0010FFFE (10fffe)
UTF-32 (decimal) 1,114,110
C/C++/Java source code "\uDBFF\uDFFE"
Python source code u"\U0010FFFE"
More...
Java Data
string.toUpperCase() ��
string.toLowerCase() ��
Character.UnicodeBlock SUPPLEMENTARY_PRIVATE_USE_AREA_B
Character.charCount() 2
Character.getDirectionality() DIRECTIONALITY_UNDEFINED [-1]
Character.getNumericValue() -1
Character.getType() 0
Character.isDefined() No
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() Yes
Character.isTitleCase() No
Character.isUnicodeIdentifierPart() No
Character.isUnicodeIdentifierStart() No
Character.isUpperCase() No
Character.isValidCodePoint() Yes
Character.isWhitespace() No