{
"id": "java-string-concat-in-loop",
"language": "java",
"group": "performance",
"listingTitle": "Avoid Java String concatenation in loops",
"title": "Avoid Java String concatenation in loops",
"mvvm": false,
"defaultSeverity": "warn",
"legacyGroup": "core",
"why": "Repeated immutable String concatenation can copy the growing prefix on every iteration.",
"suggestion": "Accumulate with StringBuilder and convert to String after the loop.",
"version": 1,
"semanticMaturity": "token",
"securityKind": "none",
"taxonomy": [
"performance"
],
"requirements": [
"sourceText"
],
"packs": [
"java"
],
"implementation": "src/languages/java/rules.rs",
"languages": [
"java"
],
"frameworks": [],
"languageVersions": [],
"limitations": [
"Only explicitly declared String variables whose nearest declaration precedes a braced loop are checked."
]
}