October 2024
Intermediate to advanced
270 pages
8h 13m
Spanish
Content preview from 97 cosas que todo programador Java debe saber
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Capítulo 79. Hay grandes herramientas en tu papelera/ directorio
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Rod Hilton
Todo desarrollador Java está familiarizado con javac para compilar, java para ejecutar y, probablemente, jar para empaquetar aplicaciones Java. Sin embargo, muchas otras herramientas útiles vienen instaladas con el JDK. Ya están en tu ordenador, en el directorio bin/ del JDK, y son invocables desde tu PATH. Es bueno que te familiarices con algunas de estas herramientas para que sepas lo que tienes a tu disposición:
jps- Si alguna vez te has encontrado ejecutando
ps aux | grep javapara encontrar las JVM en ejecución, probablemente sólo quieras ejecutarjps. Esta herramienta específica enumera todas las JVM en ejecución, pero en lugar de mostrarte un largo comando conCLASSPATHs y argumentos,jpssimplemente enumera el ID del proceso y el nombre de la clase principal de la aplicación, lo que hace mucho más fácil averiguar qué proceso es cuál.jps -lmostrará el nombre completo de la clase principal,jps -mmostrará los argumentos pasados al método main, yjps -vmostrará todos los argumentos pasados a la propia JVM. javap- El JDK incluye un desensamblador de archivos de clase Java. Ejecuta
javap <class file>para ver los campos y métodos de ese archivo de clase, lo que a menudo puede ser muy ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.