Before installing, verify if jstack is already available on your system by checking the version: jstack -version Use code with caution.

PATH=$PATH:/usr/lib/jvm/java-8-oracle/bin

sudo apt update sudo apt install openjdk-11-jdk

jstack is a command-line utility that prints Java stack traces of running Java processes. It’s part of the . Given a Java process ID (PID), jstack can show you: