{

"id": 86,

"slug": "string-lines",

"title": "String.lines() for line splitting",

"category": "strings",

"difficulty": "beginner",

"jdkVersion": "11",

"oldLabel": "Java 8",

"modernLabel": "Java 11+",

"oldApproach": "split(\"\\\\n\")",

"modernApproach": "lines()",

"oldCode": "String text = \"one\\ntwo\\nthree\";\nString[] lines = text.split(\"\\n\");\nfor (String line : lines) {\n System.out.println(line);\n}",

"modernCode": "String text = \"one\\ntwo\\nthree\";\ntext.lines().forEach(System.out::println);",

"summary": "Use String.lines() to split text into a stream of lines without regex overhead.",

"explanation": "String.lines() returns a Stream<String> of lines split by \\n, \\r, or \\r\\n. It is lazier and more efficient than split(), avoids regex compilation, and integrates naturally with the Stream API for further processing.",

"whyModernWins": [

{ "icon": "⚡", "title": "Lazy streaming", "desc": "Lines are produced on demand, not all at once like split()." },

{ "icon": "🔧", "title": "Universal line endings", "desc": "Handles \\n, \\r, and \\r\\n automatically without regex." },

{ "icon": "🔗", "title": "Stream integration", "desc": "Returns a Stream for direct use with filter, map, collect." }

],

"support": {

"state": "available",

"description": "Available since JDK 11 (September 2018)."

},

"prev": "strings/string-chars-stream",

"next": "streams/stream-of-nullable",

"related": [

"strings/string-isblank",

"strings/string-strip",

"strings/string-indent-transform"

]

}