In this example, the system is running . You will need to install the OpenJDK 17 development kit. Step 2: Update Your System Repositories
Pass the PID to jstack to output the real-time thread dump to your terminal: jstack Use code with caution. 3. Save the Thread Dump to a File For deep analysis, redirect the output to a text file: jstack > thread_dump.txt Use code with caution. Troubleshooting Common Errors 1. "jstack: command not found" You installed the JRE instead of the JDK.
If this returns a version number (e.g., javac 17.0.x ), jstack should already be available in your path. Try running jstack -help . If you see "command not found," proceed to the next step. 2. Update your package list Ensure your local package index is up to date: sudo apt update Use code with caution. Copied to clipboard 3. Install the JDK
The results were... a mixed bag. The top answer on StackOverflow confidently shouted, " sudo apt install openjdk-XX-jdk " (insert your favorite version number for XX).
jstack must match the version of the Java process you are debugging. Check your current version by running: java -version Use code with caution. Copied to clipboard 2. Install the JDK
To generate a thread dump, you need the of your Java application. Find the PID: jps -l Use code with caution. Copied to clipboard
jstack -l <pid> | grep -A 10 "deadlock"
In this example, the system is running . You will need to install the OpenJDK 17 development kit. Step 2: Update Your System Repositories
Pass the PID to jstack to output the real-time thread dump to your terminal: jstack Use code with caution. 3. Save the Thread Dump to a File For deep analysis, redirect the output to a text file: jstack > thread_dump.txt Use code with caution. Troubleshooting Common Errors 1. "jstack: command not found" You installed the JRE instead of the JDK.
If this returns a version number (e.g., javac 17.0.x ), jstack should already be available in your path. Try running jstack -help . If you see "command not found," proceed to the next step. 2. Update your package list Ensure your local package index is up to date: sudo apt update Use code with caution. Copied to clipboard 3. Install the JDK install jstack on ubuntu
The results were... a mixed bag. The top answer on StackOverflow confidently shouted, " sudo apt install openjdk-XX-jdk " (insert your favorite version number for XX).
jstack must match the version of the Java process you are debugging. Check your current version by running: java -version Use code with caution. Copied to clipboard 2. Install the JDK In this example, the system is running
To generate a thread dump, you need the of your Java application. Find the PID: jps -l Use code with caution. Copied to clipboard
jstack -l <pid> | grep -A 10 "deadlock"
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