The glyph is not a composition. Its East Asian Width is narrow. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+004A forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with 30 other glyphs.
The Wikipedia has the following information about this codepoint:
J, or j, is the tenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its usual name in English is jay (pronounced ), with a now-uncommon variant jy .
When used in the International Phonetic Alphabet for the voiced palatal approximant (the sound of "y" in "yes") it may be called yod or jod (pronounced or ).
Representations
System
Representation (click value to copy)
Nº
74
UTF-8
4A
UTF-16
00 4A
UTF-32
00 00 00 4A
URL-Quoted
%4A
HTML hex reference
J
Encoding: ASCII (hex bytes)
4A
Encoding: BIG5 (hex bytes)
4A
Encoding: BIG5HKSCS (hex bytes)
4A
Encoding: CP037 (hex bytes)
D1
Encoding: CP273 (hex bytes)
D1
Encoding: CP424 (hex bytes)
D1
Encoding: CP437 (hex bytes)
4A
Encoding: CP500 (hex bytes)
D1
Encoding: CP720 (hex bytes)
4A
Encoding: CP737 (hex bytes)
4A
Encoding: CP775 (hex bytes)
4A
Encoding: CP850 (hex bytes)
4A
Encoding: CP852 (hex bytes)
4A
Encoding: CP855 (hex bytes)
4A
Encoding: CP856 (hex bytes)
4A
Encoding: CP857 (hex bytes)
4A
Encoding: CP858 (hex bytes)
4A
Encoding: CP860 (hex bytes)
4A
Encoding: CP861 (hex bytes)
4A
Encoding: CP862 (hex bytes)
4A
Encoding: CP863 (hex bytes)
4A
Encoding: CP864 (hex bytes)
4A
Encoding: CP865 (hex bytes)
4A
Encoding: CP866 (hex bytes)
4A
Encoding: CP869 (hex bytes)
4A
Encoding: CP874 (hex bytes)
4A
Encoding: CP875 (hex bytes)
D1
Encoding: CP932 (hex bytes)
4A
Encoding: CP949 (hex bytes)
4A
Encoding: CP950 (hex bytes)
4A
Encoding: CP1006 (hex bytes)
4A
Encoding: CP1026 (hex bytes)
D1
Encoding: CP1125 (hex bytes)
4A
Encoding: CP1140 (hex bytes)
D1
Encoding: CP1250 (hex bytes)
4A
Encoding: CP1251 (hex bytes)
4A
Encoding: CP1252 (hex bytes)
4A
Encoding: CP1253 (hex bytes)
4A
Encoding: CP1254 (hex bytes)
4A
Encoding: CP1255 (hex bytes)
4A
Encoding: CP1256 (hex bytes)
4A
Encoding: CP1257 (hex bytes)
4A
Encoding: CP1258 (hex bytes)
4A
Encoding: EUC_JP (hex bytes)
4A
Encoding: EUC_JIS_2004 (hex bytes)
4A
Encoding: EUC_JISX0213 (hex bytes)
4A
Encoding: EUC_KR (hex bytes)
4A
Encoding: GB2312 (hex bytes)
4A
Encoding: GBK (hex bytes)
4A
Encoding: GB18030 (hex bytes)
4A
Encoding: HZ (hex bytes)
4A
Encoding: ISO2022_JP (hex bytes)
4A
Encoding: ISO2022_JP_1 (hex bytes)
4A
Encoding: ISO2022_JP_2 (hex bytes)
4A
Encoding: ISO2022_JP_2004 (hex bytes)
4A
Encoding: ISO2022_JP_3 (hex bytes)
4A
Encoding: ISO2022_JP_EXT (hex bytes)
4A
Encoding: ISO2022_KR (hex bytes)
4A
Encoding: LATIN_1 (hex bytes)
4A
Encoding: ISO8859_2 (hex bytes)
4A
Encoding: ISO8859_3 (hex bytes)
4A
Encoding: ISO8859_4 (hex bytes)
4A
Encoding: ISO8859_5 (hex bytes)
4A
Encoding: ISO8859_6 (hex bytes)
4A
Encoding: ISO8859_7 (hex bytes)
4A
Encoding: ISO8859_8 (hex bytes)
4A
Encoding: ISO8859_9 (hex bytes)
4A
Encoding: ISO8859_10 (hex bytes)
4A
Encoding: ISO8859_11 (hex bytes)
4A
Encoding: ISO8859_13 (hex bytes)
4A
Encoding: ISO8859_14 (hex bytes)
4A
Encoding: ISO8859_15 (hex bytes)
4A
Encoding: ISO8859_16 (hex bytes)
4A
Encoding: JOHAB (hex bytes)
4A
Encoding: KOI8_R (hex bytes)
4A
Encoding: KOI8_T (hex bytes)
4A
Encoding: KOI8_U (hex bytes)
4A
Encoding: KZ1048 (hex bytes)
4A
Encoding: MAC_CYRILLIC (hex bytes)
4A
Encoding: MAC_GREEK (hex bytes)
4A
Encoding: MAC_ICELAND (hex bytes)
4A
Encoding: MAC_LATIN2 (hex bytes)
4A
Encoding: MAC_ROMAN (hex bytes)
4A
Encoding: MAC_TURKISH (hex bytes)
4A
Encoding: PTCP154 (hex bytes)
4A
Encoding: SHIFT_JIS (hex bytes)
4A
Encoding: SHIFT_JIS_2004 (hex bytes)
4A
Encoding: SHIFT_JISX0213 (hex bytes)
4A
Encoding: CP037 (hex bytes)
D1
Encoding: CP1025 (hex bytes)
D1
Encoding: CP1047 (hex bytes)
D1
Encoding: CP1097 (hex bytes)
D1
Encoding: CP1112 (hex bytes)
D1
Encoding: CP1122 (hex bytes)
D1
Encoding: CP1123 (hex bytes)
D1
Encoding: CP1140 (hex bytes)
D1
Encoding: CP1141 (hex bytes)
D1
Encoding: CP1142 (hex bytes)
D1
Encoding: CP1143 (hex bytes)
D1
Encoding: CP1144 (hex bytes)
D1
Encoding: CP1145 (hex bytes)
D1
Encoding: CP1146 (hex bytes)
D1
Encoding: CP1147 (hex bytes)
D1
Encoding: CP1148 (hex bytes)
D1
Encoding: CP1148MS (hex bytes)
D1
Encoding: CP1149 (hex bytes)
D1
Encoding: CP273 (hex bytes)
D1
Encoding: CP277 (hex bytes)
D1
Encoding: CP278 (hex bytes)
D1
Encoding: CP280 (hex bytes)
D1
Encoding: CP284 (hex bytes)
D1
Encoding: CP285 (hex bytes)
D1
Encoding: CP290 (hex bytes)
D1
Encoding: CP297 (hex bytes)
D1
Encoding: CP420 (hex bytes)
D1
Encoding: CP424 (hex bytes)
D1
Encoding: CP500 (hex bytes)
D1
Encoding: CP500MS (hex bytes)
D1
Encoding: CP833 (hex bytes)
D1
Encoding: CP838 (hex bytes)
D1
Encoding: CP870 (hex bytes)
D1
Encoding: CP871 (hex bytes)
D1
Encoding: CP875 (hex bytes)
D1
AGL: Latin-1
J
AGL: Latin-2
J
AGL: Latin-3
J
AGL: Latin-4
J
AGL: Latin-5
J
Adobe Glyph List
J
digraph
J
RFC 5137
\u'004A'
Bash and Zsh inside echo -e
\u004A
C and C++
\u004A
C#
\u004A
CSS
\00004A
Excel
=UNICHAR(74)
Go
\u004A
JavaScript
\u004A
Modern JavaScript since ES6
\u{4a}
JSON
\u004A
Java
\u004A
Lua
\u{4A}
Matlab
char(74)
Perl
"\x{4A}"
PHP
\u{4a}
PostgreSQL
U&'\004A'
PowerShell
`u{4A}
Python
\u004A
Ruby
\u{4a}
Rust
\u{4a}
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