Java-String with Codepoints

Java-String with Codepoints

String with Codepoints The String, StringBuffer, and StringBuilder classes also have contructors and methods that work with supplementary characters. String, StringBuffer, and StringBuilder represents a string in the UTF-16 format in which supplementary characters are represented by surrogate pairs. Index values refer to char code units, so a supplementary character uses two positions in the String, StringBuffer, and … Read more…

CodePointCount and OffsetByCodePoints

Java-CodePointCount and OffsetByCodePoints Methods

[accordion] [toggle title=”CodePointCount and OffsetByCodePoints Methods” state=”closed”] Method Description static int codePointCount​(CharSequence seq, int beginIndex, int endIndex) Returns the number of Unicode code points in the text range of the specified char sequence. The text range begins at the specified beginIndex and extends to the char at index endIndex – 1. Thus the length (in … Read more…

Supplementary Character Handling Methods

Java-Supplementary Character Handling Methods

Supplementary Character Handling Methods The Character class encapsulates the char data type. For the J2SE release 5, many methods were added to the Character class to support supplementary characters. The following table lists some of the commonly used methods. [accordion] [toggle title=”Supplementary Character Handling Methods” state=”closed”] Method Description static char[] toChars​(int codePoint) Converts the specified character … Read more…

utf-16

Java-Supplementary Characters and UTF-16 Encoding

Supplementary Characters and UTF-16 Encoding In the past, all Unicode characters could be held by 16 bits, which is the size of a char (2 bytes), because those values ranged from 0 to FFFF(0 to 65,535). When the unification effort started in the 1980s, a fixed 2-byte width code was more than sufficient to encode … Read more…