How do I use the JAVA_OPTS environment variable?

Question

How can I the JAVA_OPTS variable to configure a web server (in my case a Linux server)?

How can I set -Djava.awt.headless=true using JAVA_OPTS?

Answer 1

JAVA_OPTS is the standard environment variable that servers and java apps append to call that executes the java command”

For example, in Tomcat if you define JAVA_OPTS=’-Xmx1024m’, the startup script will execute java org.apache.tomcat.Servert -Xmx1024m

If you are running Linux, you can set the JAVA_OPTS, right before the startup script by doing

JAVA_OPTS='-Djava.awt.headless=true'

This will only last as long as the console is open. To make it more permanent you can add it to your ~/.profile or ~/.bashrc file

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Answer 2

JAVA_OPTS is the environment variable where servers and other Java apps append to the call which executes the java command.

For eg. in tomcat if you define JAVA_OPTS='-Xmx1024m', the script will execute java org.apache.tomcat.Servert -Xmx1024m

If you are running in Linux/OS, you can set the JAVA_OPTS, right before you call the startup script by doing

JAVA_OPTS='-Djava.awt.headless=true'

This will only be there as long as the console is open. In order to make it permanent, you can add it to your ~/.profile or ~/.bashrc file.