Java — What is the numerical range of a char (primitive type)?

Introduction / Context:
Unlike C/C++, Java's char is a 16-bit unsigned integer type designed to hold UTF-16 code units. Knowing its range is useful when performing conversions and arithmetic involving characters.

Given Data / Assumptions:

• Java char is fixed-width and unsigned.
• The question asks for the numeric range.

Concept / Approach:
char uses 16 bits and is unsigned, so it ranges from 0 to 2^16 - 1 = 65535. This is independent of platform or CPU architecture (Java's types are platform-independent).

Step-by-Step Solution:

Verification / Alternative check:
Review the Java Language Specification: char is an unsigned 16-bit integer representing UTF-16 code units.

Why Other Options Are Wrong:

• -128..127 and signed 16-bit ranges describe byte and short, not char.
• 0..32767 is 15-bit; char is 16-bit.
• “Depends on the platform” contradicts Java's fixed type sizes.

Common Pitfalls:
Confusing char with C/C++ char (which may be signed/unsigned 8-bit depending on compiler), or equating it with short.

Final Answer:
0 to 65535