> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/core/get-started/faq/java-or-javac-unrecognized.md).

# Why is java or javac unrecognized as commands?

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This can happen for a few reasons:

* You have not correctly added the jdk to your `path` environment variable. Ensure that you have done so correctly.
* The Command Prompt or CLI service was open from before you added the `jdk` to your `path` environment variable. You simply need to restart this service.
* You have not installed a version of java that is compatible with your machine. Double check that you have the right bitness (x64 or x86).
* You have a Java installation but have not installed the JDK correctly, in which case `javac` would not be recognized. You can find the links to it in the above FAQ. If properly installed, you should be able to find a `jdk` folder inside your Java installation folder (`C:\Program Files (x86)\Java\`)

When you've tried all these fixes, verify your installation by opening a Command Prompt and running:

{% tabs %}
{% tab title="Shell" %}
{% code lineNumbers="true" %}

```sh
java --version
```

{% endcode %}
{% endtab %}
{% endtabs %}

and

{% tabs %}
{% tab title="Shell" %}
{% code lineNumbers="true" %}

```sh
javac
```

{% endcode %}
{% endtab %}
{% endtabs %}

The first should return a valid version number and the second should give a list of options and flags.

If you still have any issues running java commands, set the `JAVA_HOME` environment variable.


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