{

"id": 30,

"slug": "string-strip",

"title": "String.strip() vs trim()",

"category": "strings",

"difficulty": "beginner",

"jdkVersion": "11",

"oldLabel": "Java 8",

"modernLabel": "Java 11+",

"oldApproach": "trim()",

"modernApproach": "strip()",

"oldCode": "// trim() only removes ASCII whitespace\n// (chars <= U+0020)\nString clean = str.trim();",

"modernCode": "// strip() removes all Unicode whitespace\nString clean = str.strip();\nString left = str.stripLeading();\nString right = str.stripTrailing();",

"summary": "Use Unicode-aware stripping with strip(), stripLeading(), stripTrailing().",

"explanation": "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.",

"whyModernWins": [

{

"icon": "🌐",

"title": "Unicode-correct",

"desc": "Handles all whitespace characters from every script."

},

{

"icon": "🎯",

"title": "Directional",

"desc": "stripLeading() and stripTrailing() for one-sided trimming."

},

{

"icon": "🛡️",

"title": "Fewer bugs",

"desc": "No surprise whitespace left behind in international text."

}

],

"support": {

"state": "available",

"description": "Widely available since JDK 11 (Sept 2018)"

},

"prev": "strings/string-isblank",

"next": "strings/string-repeat",

"related": [

"strings/string-formatted",

"strings/string-indent-transform",

"strings/string-chars-stream"

]

}