utf-16

What is the Java’s internal represention for String? Modified UTF-8? UTF-16?

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Java uses UTF-16 for the internal text representation The representation for String and StringBuilder etc in Java is UTF-16 https://docs.oracle.com/javase/8/docs/technotes/guides/intl/overview.html How is text represented in the Java platform? The Java programming language is based on the Unicode character set, and several libraries implement the Unicode standard. The primitive data type char in the Java programming … Read more

How to solve “unable to switch the encoding” error when inserting XML into SQL Server

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This question is a near-duplicate of 2 others, and surprisingly – while this one is the most recent – I believe it is missing the best answer. The duplicates, and what I believe to be their best answers, are: Using StringWriter for XML Serialization (2009-10-14) https://stackoverflow.com/a/1566154/751158 Trying to store XML content into SQL Server 2005 … Read more

Unicode in C++11

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Is the above analysis correct Let’s see. you can’t validate an array of bytes as containing valid UTF-8 Incorrect. std::codecvt_utf8<char32_t>::length(start, end, max_lenght) returns the number of valid bytes in the array. you can’t find out the length Partially correct. One can convert to char32_t and find out the length of the result. There is no … Read more

Java Unicode String length

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Found a solution to your problem. Based on this SO answer I made a program that uses regex character classes to search for letters that may have optional modifiers. It splits your string into single (combined if necessary) characters and puts them into a list: import java.util.*; import java.lang.*; import java.util.regex.*; class Main { public … Read more

Difference between Big Endian and little Endian Byte order

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Big-Endian (BE) / Little-Endian (LE) are two ways to organize multi-byte words. For example, when using two bytes to represent a character in UTF-16, there are two ways to represent the character 0x1234 as a string of bytes (0x00-0xFF): Byte Index: 0 1 ——————— Big-Endian: 12 34 Little-Endian: 34 12 In order to decide if … Read more

Why does .net use the UTF16 encoding for string, but uses UTF-8 as default for saving files?

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If you’re happy ignoring surrogate pairs (or equivalently, the possibility of your app needing characters outside the Basic Multilingual Plane), UTF-16 has some nice properties, basically due to always requiring two bytes per code unit and representing all BMP characters in a single code unit each. Consider the primitive type char. If we use UTF-8 … Read more

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