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Java's Modified UTF-8 is CESU-8 with a special overlong encoding of the NUL character (U+0000) as the two-byte sequence C0 80. [7] The Oracle database uses CESU-8 for its "UTF8" character set. Standard UTF-8 can be obtained using the character set "AL32UTF8" (since Oracle version 9.0). [8]
A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the format &#nnnn; or &#xhhhh; where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form.
Java internally uses Modified UTF-8 (MUTF-8), in which the null character U+0000 uses the two-byte overlong encoding 0xC0, 0x80, instead of just 0x00. [60] Modified UTF-8 strings never contain any actual null bytes but can contain all Unicode code points including U+0000 , [ 61 ] which allows such strings (with a null byte appended) to be ...
A character set is a collection of elements used to represent text. [9] [10] For example, the Latin alphabet and Greek alphabet are both character sets. A coded character set is a character set mapped to a set of unique numbers. [10] For historical reasons, this is also often referred to as a code page. [9]
Declared character set for the 10 million most popular websites since 2010 UTF-8 has been the most common encoding for the World Wide Web since 2008. [ 2 ] As of January 2025 [update] , UTF-8 is used by 98.5% of surveyed web sites (and 99.2% of top 100,000 pages and 98.8% of the top 1,000 highest-ranked web pages), the next most popular ...
The Unicode Consortium and the ISO/IEC JTC 1/SC 2/WG 2 jointly collaborate on the list of the characters in the Universal Coded Character Set.The Universal Coded Character Set, most commonly called the Universal Character Set (abbr. UCS, official designation: ISO/IEC 10646), is an international standard to map characters, discrete symbols used in natural language, mathematics, music, and other ...
The category of character sets includes articles on specific character encodings (see the article for a precise definition). It includes those used in computer science (coded character sets (also known as character sets (this term should not be used anymore [according to whom?]) or code pages), character encoding forms, character encoding schemes) and those that use non-numeric, pre-digital ...
The term DBCS traditionally refers to a character encoding where each graphic character is encoded in two bytes.. In an 8-bit code, such as Big-5 or Shift JIS, a character from the DBCS is represented with a lead (first) byte with the most significant bit set (i.e., being greater than seven bits), and paired up with a single-byte character-set (SBCS).