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You must correctly configure the JAVA_HOME and PATH environment variables to locate the installed JDK (Java Development Kit) on your system and to enable Java applications and tools. This section shows how to set the JAVA_HOME environment variable and update the system PATH variable on Linux.
To ensure proper compatibility between Java SunPKCS11 and the Futurex PKCS11 module, you must use Oracle Java and not OpenJDK. Oracle Java 11, 17, and 21 are currently supported.

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Linux

Perform the following steps to configure the JAVA_HOME variable in Linux:
1
Determine the installation path of Oracle Java:Find the path for the Oracle Java installation, such as /usr/lib/jvm/. Use the following command to list the installed JDKs:
Shell
ls /usr/lib/jvm/
For example, if you installed Oracle Java 11, the path is likely: /usr/lib/jvm/jdk-11-oracle-x64.
2
Edit the profile file:Open a terminal and use a text editor to edit the /etc/profile file, which the system uses when users log in. You might need superuser privileges to edit this file.
Shell
sudo nano /etc/profile
3
Add the JAVA_HOME and update PATH:Add the following lines to the end of the /etc/profile file, replacing the path with the actual path to your Oracle Java installation:
None
export JAVA_HOME=/usr/lib/jvm/jdk-11-oracle-x64
export PATH=$JAVA_HOME/bin:$PATH
4
Apply the changes:After saving the file, apply the changes by sourcing the profile file:
Shell
source /etc/profile
5
Verify the configuration:To ensure that the JAVA_HOME variable is set correctly and the PATH is updated, you can check their values with the following commands:
Shell
echo $JAVA_HOME
echo $PATH
You should see the path you set for JAVA\HOME and ensure $JAVAHOME/bin is part of the PATH.