jps -l Print stack trace of a Java process (replace PID with process ID):
sudo apt update sudo apt install default-jdk Alternatively, install a specific version (e.g., JDK 17):
jstack -version List Java processes:
Here’s a short report on installing jstack on Ubuntu. 1. Overview jstack is a command-line utility that prints Java stack traces of running Java processes, including native and Java frames. It is part of the Java Development Kit (JDK), not the Java Runtime Environment (JRE). 2. Installation Methods Method 1: Install a full JDK (recommended) Update package lists and install a JDK (e.g., default-jdk which provides OpenJDK):
which jstack Example output: /usr/bin/jstack install jstack on ubuntu
sudo apt install openjdk-17-jdk-headless jstack is not available in any JRE-only package (e.g., openjdk-17-jre ). 3. Verify Installation After installation, check that jstack is available:
Check its version:
sudo apt install openjdk-17-jdk Ubuntu’s package openjdk-<version>-jdk-headless also includes jstack :