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Strings beginner

Multiline JSON/SQL/HTML

Write SQL, JSON, and HTML as they actually look.

Code Comparison
✕ Java 8 
String sql =
    "SELECT u.name, u.email\n" +
    "FROM users u\n" +
    "WHERE u.active = true\n" +
    "ORDER BY u.name";
✓ Java 15+ 
String sql = """
    SELECT u.name, u.email
    FROM users u
    WHERE u.active = true
    ORDER BY u.name""";
Why the modern way wins
📋

Copy-paste

Paste SQL/JSON directly from other tools.

📖

Readable

The string looks like the actual SQL/JSON output.

🔧

Maintainable

Easy to edit — no hunting for \n and + operators.

Old Approach
Escaped Strings
Modern Approach
Text Blocks
Since JDK
15
Difficulty
beginner
JDK Support
Multiline JSON/SQL/HTML
Available

Widely available since JDK 15 (Sept 2020)

How it works

Text blocks make embedded languages readable. Copy SQL from your database tool and paste it directly. The closing delimiter position controls indentation stripping.

Related patterns
Strings beginner

String.formatted()

Java 8
String msg = String.format(
    "Hello %s, you are %d",
    name, age
);
Java 15+
String msg =
    "Hello %s, you are %d"
    .formatted(name, age);
Hover to see modern ➜
JDK 15+ →
Strings beginner

String.repeat()

Java 8
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 3; i++) {
    sb.append("abc");
}
String result = sb.toString();
Java 11+
String result = "abc".repeat(3);
// "abcabcabc"
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JDK 11+ →
Strings beginner

String.strip() vs trim()

Java 8
// trim() only removes ASCII whitespace
// (chars <= U+0020)
String clean = str.trim();
Java 11+
// strip() removes all Unicode whitespace
String clean = str.strip();
String left  = str.stripLeading();
String right = str.stripTrailing();
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JDK 11+ →
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