October 2024
Intermediate to advanced
638 pages
15h 47m
Spanish
Content preview from Libro de cocina de Java, 4ª edición
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Capítulo 6. Fechas y horas
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6.0 Introducción
Los desarrolladores sufrieron durante década y media las incoherencias y ambigüedades de la clase Date de Java 1.0 y su aspirante a sustituta, la clase Calendar de Java 1.1. Surgieron varios paquetes alternativos de sustitución de Date, como el sencillo y sensato Date4J y el paquete más completo Joda-Time. Java 8 introdujo un paquete nuevo, coherente y bien pensado para el manejo de la fecha y la hora bajo los auspicios del Proceso de la Comunidad Java, JSR-310, dirigido por el desarrollador Stephen Colebourne, basado en su anterior paquete Joda-Time, pero con varios cambios importantes de diseño.1 Este paquete se inclina por las fechas ISO 8601; el formato por defecto es, por ejemplo, 2015-10-23T10:22:45. Pero, por supuesto, puede funcionar con otros esquemas de calendario.
Una de las principales ventajas de la nueva API es que proporcionaoperaciones útiles como sumar/restar fechas/horas. Los desarrolladores perdían mucho tiempo reimplementando una y otra vez estas útiles operaciones. Con las nuevas API, se puede utilizar la funcionalidad incorporada. Dicho esto, millones de líneas de código se basan en las antiguas API, por lo que las revisaremos brevemente, y consideraremos la interfaz de la nueva API con el código heredado en la receta final de este capítulo, laReceta 6.9.
Otra ventaja de la nueva API es que casi ...
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