The jstack command is part of the Java Development Kit (JDK), specifically the openjdk-xx-jdk package (where xx is the Java version).
Here’s a detailed, feature-length guide to installing and using jstack on Ubuntu.
If your application requires a specific Java version (Java 11 is a common Long-Term Support version), you should install that specific JDK. install jstack on ubuntu
For Java 11:
sudo apt install openjdk-11-jdk -y
For Java 21 (Newer Ubuntu versions):
sudo apt install openjdk-21-jdk -y
To use the jstack command without specifying the full path, add the JDK bin directory to your system path:
sudo nano /etc/environment
Add the following line to the end of the file, replacing /usr/lib/jvm/java-8-oracle/bin with the actual path to the JDK bin directory: The jstack command is part of the Java
PATH=$PATH:/usr/lib/jvm/java-8-oracle/bin
Since jstack is bundled with the JDK, you need to install a JDK (not just JRE).
# Find the Java process ID
ps aux | grep java
Introduction
jstack is a command-line utility that comes bundled with the Java Development Kit (JDK). It is used to print Java stack traces of Java threads for a specified Java process. This tool is invaluable for developers and system administrators who need to debug applications, diagnose deadlocks, or identify performance bottlenecks (CPU spikes). Method 2: Installing a Specific Version (e
Because jstack is part of the JDK (not the JRE), you cannot simply install it as a standalone package; you must install the full Java Development Kit.