https://github.com/spring-projects/spring-framework: Spring Context (Spring IO)
  • Juergen Hoeller 
Abstraction for determining the current Locale,
plus global holder that exposes a thread-bound Locale.

/**
 * Abstraction for determining the current Locale,
 * plus global holder that exposes a thread-bound Locale.
 */
@NonNullApi
@NonNullFields
package org.springframework.context.i18n;

import org.springframework.lang.NonNullApi;
import org.springframework.lang.NonNullFields;