Jun 25, 2026 · Fundamentals

A Programmer’s Intro to Unicode

This guide walks programmers through Unicode’s massive code space, its diverse scripts, encoding schemes like UTF‑8 and UTF‑16, combining marks, canonical equivalence, normalization forms, and grapheme clusters, explaining why the system is complex yet essential for global text handling.

UTF-16Unicodecharacter encoding

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Programmer DD

Jul 22, 2020 · Fundamentals

Why Java’s char Can’t Represent All Unicode Characters – Understanding UTF‑16 and Code Points

This article explains how Java’s char type stores Unicode code units in UTF‑16, why its range of \u0000 to \uffff limits direct representation of newer Unicode characters, and how methods like String.length, getBytes, and code‑point APIs help handle multi‑byte characters such as emojis and rare Chinese glyphs.

UTF-16Unicodechar

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Why Java’s char Can’t Represent All Unicode Characters – Understanding UTF‑16 and Code Points

code points

A Programmer’s Intro to Unicode

Why Java’s char Can’t Represent All Unicode Characters – Understanding UTF‑16 and Code Points