October 2024
Intermediate to advanced
638 pages
15h 47m
Spanish
Content preview from Libro de cocina de Java, 4ª edición
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Apéndice A. Java antes y ahora
Introducción: Siempre en movimiento el Java es
Java siempre ha sido un blanco móvil para desarrolladores y escritores. En mis programas de formación comercial me encuentro con desarrolladores que aún no conocen algunas de las funciones añadidas a las versiones antiguas de Java, por no hablar de las actuales. Este apéndice examina cada una de las principales versiones de Java. Consulta el artículo de Jon Byous de Sun Microsystems "Java Technology: The Early Years" para una revisión de la historia temprana de Java. También puedes encontrar una copia en el sitio web de la Universidad de Paderborn.1
Los detalles sobre las versiones anteriores a Java 8 se consideran historia antigua y se han trasladado a mi sitio web, https://darwinsys.com/java/ancientHistory.html.
Novedades de Java 8
Cambios en el lenguaje Java 8
La mayor novedad del lenguaje Java 8 son las expresiones lambda. Tras una década de debate sobre cómo implementarlas, los cierres, o expresiones lambda, llegaron por fin con Java 8. Se trata de un tema tan amplio que recibe un capítulo entero en esta edición; consultael Capítulo 9.
Ahora se pueden colocar anotaciones en los tipos estructurados.
Ahora se admiten métodos por defecto en las interfaces, lo que permite añadir funciones sin romper todas las implementaciones de la interfaz.
Cambios en la API de Java 8
Java 8 incorpora la nueva API fecha/hora de JSR-310. Esto proporciona un conjunto más coherente y sensato de clases y rutinas ...
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