java.util · java.base · since Java 1.1

Locale

declaration

public final class Locale implements Cloneable, Serializable

Language + region (+ script) identifier driving all locale-sensitive behavior: formatting, collation, resource-bundle selection. Machine-facing strings use Locale.ROOT.

Key methods

`static Locale forLanguageTag(String tag)`	BCP 47: "sr-Latn-RS", "en-US".
`static Locale getDefault()`	The JVM default — an input to respect, not to assume.
`ROOT / US / GERMANY …`	Constants; ROOT = locale-neutral for protocols and logs.