https://github.com/spring-projects/spring-framework: Spring Context (Spring IO)
  • Juergen Hoeller 
Formatters for java.lang.Number properties. 
/**
 * Formatters for {@code java.lang.Number} properties.
 */
@NonNullApi
@NonNullFields
package org.springframework.format.number;

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