在jshell中使用C选项有什么用处 [英] What is the use of C option in jshell

问题描述

我已经浏览了

---

同时你可以在警告时启用编译器错误（ -Werror ）并在编译时使用 -Xlint 键 cast 来警告你使用的显式强制转换abov e代码使用 -

  jshell -C-Xlint：cast -C-Werror 
  

并且相同的语句会导致Jshell编译器出现警告和错误： -

< a href =https://i.stack.imgur.com/gntZC.png =nofollow noreferrer>

---

虽然IMO，但这肯定记录的更少使用JShell -C 命令行选项时，应使用/不应使用所有标志。

I have gone through the introduction to jshell guide and couldn't find description/examples about the -C option in jshell.

$jshell --help
 -C<flag>              Pass <flag> to the compiler.
                        Use one -C for each compiler flag or flag argument

解决方案

You can use this option to make use of javac command line arguments for example consider this piece of code:

String str = (String)"Hello"

Starting jshell normally and using the same would result as:

---

While at the same time you can enable compiler errors on warning(-Werror) and make use of the -Xlint key cast while compiling to warn you of the explicit cast used in the above code using -

jshell -C-Xlint:cast -C-Werror

and the same statement would result into warnings and error from Jshell compiler as:-

---

Though IMO, this certainly is documented far less in terms of what all flags shall/shall not be used while using the JShell -C command line option.

这篇关于在jshell中使用C选项有什么用处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！