System.exit的替代方案(1) [英] Alternatives to System.exit(1)
问题描述
由于各种原因,在编写 Java应用程序时,调用 System.exit
是不受欢迎的,所以如何通知调用进程并非一切都是按照计划进行?
For various reasons calling System.exit
is frowned upon when writing Java Applications, so how can I notify the calling process that not everything is going according to plan?
编辑:1是替换
-zero退出代码。
The 1 is a standin
for any non-zero exit code.
推荐答案
使用 System.exit
是当'application'真的是一个更大的Java应用程序(服务器)的子应用程序(例如servlet,applet)时,我不赞成:在这种情况下, System.exit
可以停止JVM以及所有其他子应用程序。在这种情况下,抛出一个适当的异常,可以被应用程序框架/服务器捕获和处理是最好的选择。
The use of System.exit
is frowned upon when the 'application' is really a sub-application (e.g. servlet, applet) of a larger Java application (server): in this case the System.exit
could stop the JVM and hence also all other sub-applications. In this situation, throwing an appropriate exception, which could be caught and handled by the application framework/server is the best option.
如果java应用程序真正意味着是作为独立应用程序运行,使用 System.exit
没有任何问题。在这种情况下,设置退出值可能是向父进程传达失败或成功的最简单(也是最常用)的方式。
If the java application is really meant to be run as a standalone application, there is nothing wrong with using System.exit
. in this case, setting an exit value is probably the easiest (and also most used) way of communicating failure or success to the parent process.
这篇关于System.exit的替代方案(1)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!