Cannot run Java from the Windows PowerShell command prompt

Question

I have Java installed on my machine (the JRE is under C:\Program Files\Java) but I can't run any java command from the Windows PowerShell command prompt.

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

However, I have noticed that Java does work and that I can run Java commands on the old Windows command prompt. Turns out it's only PowerShell where I can't run those commands.

I have JRE 7 and I'm using Windows PowerShell on Windows 8.

Have you set %JAVA_HOME%/bin in PATH?

Rahul Bobhate
– Rahul Bobhate

2013-05-29 10:21:47 +00:00
Commented May 29, 2013 at 10:21 — Rahul Bobhate
– Rahul Bobhate, Commented May 29, 2013 at 10:21
You need to add Java to your system path.

MD Sayem Ahmed
– MD Sayem Ahmed

2013-05-29 10:22:02 +00:00
Commented May 29, 2013 at 10:22 — MD Sayem Ahmed
– MD Sayem Ahmed, Commented May 29, 2013 at 10:22

i_want_more_edits · Accepted Answer · 2021-08-31 18:22:12Z

15

Make 2 environment variable changes:

Add a JAVA_HOME variable equal to something like: C:\Java\JDK1.7.0_25_x64
Add %JAVA_HOME%\bin to the beginning of your PATH variable.

Then, start a brand new shell to see if the changes were applied.

edited Aug 31, 2021 at 18:22

i_want_more_edits

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answered Aug 29, 2013 at 17:35

djangofan

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1 Comment

swapyonubuntu Over a year ago

thanks, for others, do not miss step 2 where bin is important. It worked

Sri Harsha Chilakapati · Accepted Answer · 2013-05-29 10:50:54Z

6

In the run dialog box, enter sysdm.cpl
In the window that came up, navigate to Advanced tab. Click on the Environment Variables button.
Add the location of your java installation (the bin directory) to the PATH variable.
```
;%ProgramFiles%/Java/jre%version%/bin
```
followed by a ;

Note:

%version% means the java version.

edited May 29, 2013 at 10:50

answered May 29, 2013 at 10:36

Sri Harsha Chilakapati

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Sajan Chandran · Accepted Answer · 2013-05-29 10:26:45Z

3

You need to modify your "PATH" environment variable to add your "java" bin location, one way via command prompt set path=%path%;<your java bin location>;

But this will be set only for your current session of your terminal.

answered May 29, 2013 at 10:26

Sajan Chandran

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Comments

Peter Mortensen · Accepted Answer · 2014-12-27 01:42:35Z

2

You need to set the Java class path:

Reference:

How to set class path?

Or:

Link-2: How to set class path?

edited Dec 27, 2014 at 1:42

Peter Mortensen

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answered May 29, 2013 at 10:27

Butani Vijay

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double-beep · Accepted Answer · 2019-06-23 15:45:17Z

2

Add it to C:/Program Files/Java/jre7/bin added to the classpath environment variable.

edited Jun 23, 2019 at 15:45

double-beep

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answered May 29, 2013 at 10:22

Gyan

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2 Comments

CaptainGenesisX Over a year ago

Thanks. I needed back slashes for my Windows 10 system. Also the path for me was a little different due to the time that has passed since your post.

Cadoiz Over a year ago

sure that you need the /bin folder and not /lib? Reference Link

Peter Mortensen · Accepted Answer · 2014-12-27 01:44:44Z

1

If the environment variable is set or you have sourced the environment appropriately, the issue is executing a file in a shell:

javac .\HelloWorld.java      //That is a file, so it can be ./

java HelloWorld              //Not the correct file name, so it will not execute, and so must call it as in MSDOS

You cannot .\ on the HelloWorld.class as the Java bytecode must be executed without the extension, .\ is for file execution.

edited Dec 27, 2014 at 1:44

Peter Mortensen

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answered Oct 23, 2014 at 4:47

Klunk

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Comments

Cedric Reichenbach · Accepted Answer · 2019-10-28 11:51:53Z

1

If it works in cmd, but not in PowerShell, your JDK path entry might be in quotes.

As described in an answer to another question, go to system variables, edit the raw text of Path and simply remove the quotes.

edited Oct 28, 2019 at 11:51

answered Feb 3, 2018 at 20:14

Cedric Reichenbach

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i_want_more_edits · Accepted Answer · 2021-08-31 16:17:14Z

1

I fixed this problem by reinstalling Git-2.8.2-64-bit.exe and following these instructions! https://learn.adafruit.com/windows-tools-for-the-electrical-engineer/git-plus-command-line-tools

I then added the code mentioned above c:\Program Files\Java\jdk-11.0.3\bin

by navigating to control panel /system/Advanced tab
Click on "Environment Variables" then "system's variables"
and looked for Path to edited and
then added c:\Program Files\Java\jdk-11.0.3\bin

After that, all is working for me now in a Windows PowerShell and also a MinGW64! See images of it working:

edited Aug 31, 2021 at 16:17

i_want_more_edits

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answered Jun 23, 2019 at 17:28

Dave

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1 Comment

Cadoiz Over a year ago

Unfortunately, the edit queue seems to be full - Paths are better readable when formatted as code C:\my_example\path

rzakrzewski · Accepted Answer · 2013-05-29 10:34:06Z

0

If it works in the regular shell but not in PowerShell, maybe you had PowerShell open when you installed or set your path and you just need to close PowerShell and reopen a new one to pick up the new path.

answered May 29, 2013 at 10:34

rzakrzewski

1

Comments

Codeninja · Accepted Answer · 2021-06-21 06:37:06Z

0

If this occurs while running the script, edit the value for JAVA_HOME inside script.

example: [string] $java_home = "C:\env\java\jdk-1.8.0.222",

answered Jun 21, 2021 at 6:37

Codeninja

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Kevin Oswaldo · Accepted Answer · 2022-03-23 10:55:16Z

0

My issue was that I had to restart my terminal, it worked after that.

I hope this helps to anyone with my same issue

answered Mar 23, 2022 at 10:55

Kevin Oswaldo

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