Unicode Character 'DOWNWARDS TWO HEADED ARROW' (U+21A1)

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Unicode Data
Name DOWNWARDS TWO HEADED ARROW
Block Arrows
Category Symbol, Other [So]
Combine 0
BIDI Other Neutrals [ON]
Mirror N
Old name DOWN TWO HEADED ARROW
Index entries fast cursor down
cursor down, fast
form feed
Comments form feed
fast cursor down
Version Unicode 1.1.0 (June, 1993)
Encodings
HTML Entity (decimal) ↡
HTML Entity (hex) ↡
How to type in Microsoft Windows Alt +21A1
UTF-8 (hex) 0xE2 0x86 0xA1 (e286a1)
UTF-8 (binary) 11100010:10000110:10100001
UTF-16 (hex) 0x21A1 (21a1)
UTF-16 (decimal) 8,609
UTF-32 (hex) 0x000021A1 (21A1)
UTF-32 (decimal) 8,609
C/C++/Java source code "\u21A1"
Python source code u"\u21A1"
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Java Data
string.toUpperCase()
string.toLowerCase()
Character.UnicodeBlock ARROWS
Character.charCount() 1
Character.getDirectionality() DIRECTIONALITY_OTHER_NEUTRALS [13]
Character.getNumericValue() -1
Character.getType() 28
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