U+F1F1

U+F1F1

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U+F1F1 is not a valid unicode character.
Encodings
HTML Entity (decimal) 
HTML Entity (hex) 
How to type in Microsoft Windows Alt +F1F1
UTF-8 (hex) 0xEF 0x87 0xB1 (ef87b1)
UTF-8 (binary) 11101111:10000111:10110001
UTF-16 (hex) 0xF1F1 (f1f1)
UTF-16 (decimal) 61,937
UTF-32 (hex) 0x0000F1F1 (f1f1)
UTF-32 (decimal) 61,937
C/C++/Java source code "\uF1F1"
Python source code u"\uF1F1"
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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