jstack

To install on Ubuntu, you must install a Java Development Kit (JDK) . By default, Ubuntu often comes with only the Java Runtime Environment (JRE), which does not include diagnostic tools like jstack . 1. Identify Your Java Version

Generate thread dump with lock info

Process ID (PID)

To generate a thread dump, you need the of your Java application. Find the PID: jps -l Use code with caution. Copied to clipboard

Uninstalling

sudo apt update sudo apt install openjdk-11-jdk

# Check if JDK is installed dpkg -l | grep jdk

Capture thread dump