Records: a local record is a lightweight tuple

Records can be declared inside a method, which is the tidy way to carry an intermediate pair through a stream without a throwaway top-level class.

Code

var words = List.of("java", "sql", "hibernate", "kafka");

record Scored(String word, int length) {}

List<String> report = words.stream()
        .map(w -> new Scored(w, w.length()))
        .sorted(Comparator.comparingInt(Scored::length).reversed())
        .map(s -> s.word() + "(" + s.length() + ")")
        .toList();

System.out.println(report);

Output

[hibernate(9), kafka(5), java(4), sql(3)]

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Published 2026-07-30