Java在cmd中运行，但不在PowerShell中运行 [英] Java runs in cmd, but not from the PowerShell

问题描述

我刚刚将java文件夹添加到我的环境变量中。当我尝试从Windows命令行（cmd）执行 javac HelloWorld.java 和 java HelloWorld 时，它正常执行。但是，如果我打开Windows Powershell并执行相同操作，它会说：

I just added the java folder to my Environment Variables. When I try to execute, for example, javac HelloWorld.java and java HelloWorld from the Windows command line (cmd), it executes normally. But if I open Windows Powershell and do the same, it says:

javac : The term 'javac' is not recognized as the name of a cmdlet, function, script file, or operable program. Check t
he spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ javac HelloWorld.java
+ ~~~~~
    + CategoryInfo          : ObjectNotFound: (javac:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

另外，如果我在cmd中编译HelloWorld.java，则可以从Powershell运行 java HelloWorld 。

Also, if I compile HelloWorld.java in cmd, it is possible to run java HelloWorld from the Powershell.

如何从Powershell执行javac？

How can I execute javac from the Powershell?

推荐答案

验证你从powershell中的$ env：path获得了什么。同样来自cmd echo％path％
如果在powershell路径中不包含javapath，请确保正确添加。

Verify what you got from $env:path in powershell. Also from cmd echo %path% If javapath is not contain in powershell path, make sure you add properly.

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