String.strip() vs trim()

Code Comparison

// trim() only removes ASCII whitespace
// (chars <= U+0020)
String clean = str.trim();

// strip() removes all Unicode whitespace
String clean = str.strip();
String left  = str.stripLeading();
String right = str.stripTrailing();

Why the modern way wins

🌐

Unicode-correct

Handles all whitespace characters from every script.

🎯

Directional

stripLeading() and stripTrailing() for one-sided trimming.

🛡️

Fewer bugs

No surprise whitespace left behind in international text.

JDK Support

String.strip() vs trim()

Available

Widely available since JDK 11 (Sept 2018)

How it works

trim() only removes characters ≤ U+0020 (ASCII control chars and space). strip() uses Character.isWhitespace() which handles Unicode spaces like non-breaking space, ideographic space, etc.