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 15. Envases y embalajes
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15.0 Introducción
Uno de los mejores aspectos del lenguaje Java es que ha definido un mecanismo de empaquetamiento muy claro para categorizar y gestionar su gran API. Contrasta esto con la mayoría de los demás lenguajes, donde los símbolos pueden encontrarse en la propia biblioteca C o en cualquiera de las docenas de otras bibliotecas, sin convenciones de nomenclatura claramente definidas.1 Las API constan de uno o más paquetes, los paquetes constan de clases, y las clases constan de métodos y campos. Cualquiera puede crear un paquete, con una restricción importante: ni tú ni yo podemos crear un paquete cuyo nombre empiece por las cuatro letras java. Los paquetes llamados java. o javax. están reservados al uso de los desarrolladores de Java de Oracle, bajo la gestión del Proceso de la Comunidad Java (JCP) . Cuando Java era nuevo, había una docena de paquetes en una estructura que en gran medida sigue con nosotros, aunque ha cuadruplicado su tamaño; algunos de estos paquetes se muestran enla Tabla 15-1.
| Nombre | Función |
|---|---|
|
Interfaz gráfica de usuario |
|
Leer y escribir |
|
Clases intrínsecas ( |
|
Soporte de biblioteca para el procesamiento de anotaciones |
|
Biblioteca de matemáticas |
|
Redes (sockets) |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.