Configuring the JDK

The Java Profiler is deployed using the non-interactive shell and depends on JDK 8 or later (excluding JRE 8 or JRE 11).

After JAVA_HOME is configured, if the JDK version is JDK 8, configure the correct tools.jar path in the CLASSPATH environment variable. You can run the find / -name tools.jar command to query the directory. Then add CLASSPATH=/PATH/lib/tools.jar to the configuration file (/etc/environment or ~/.bashrc) and make the configuration take effect.

1. Check whether the JDK is installed.

   Run the java -version or which java command.

   If the JDK is not installed, install or upload the JDK file of a qualified version. If the Java version is earlier than 1.8, use JDK 8 or later.

2. Configure the JAVA_HOME environment variable.
   • On Debian, Ubuntu, UOS 20, or Linx, upload the JDK file to the server and add the following content to the /etc/environment file:

     1	export JAVA_HOME=/usr/jdk/jdk1.8.0

     In the preceding command, replace /usr/jdk/jdk1.8.0 with the actual absolute path of the JDK file.

     Run the following command to apply the JAVA_HOME configuration:

     1	source /etc/environment

   • On CentOS, EulerOS, openEuler, NeoKylin, Kylin V10, or SUSE, upload the JDK file to the server. Configure JAVA_HOME in the ~/.bashrc file. If the ~/.bashrc file does not exist, you can run the touch ~/.bashrc command to create the file and add the following content to the file:

     1	export JAVA_HOME=/usr/jdk/jdk1.8.0

     In the preceding command, replace /usr/jdk/jdk1.8.0 with the actual absolute path of the JDK file.

     Run the following command to apply the JAVA_HOME configuration:

     1	source ~/.bashrc

3. Verify the JDK configuration.

   1	java -version