How do you use jstack with a simple code example?

jstack is a Java command-line tool that prints Java thread stack traces for a given Java process. This can help in diagnosing thread-related issues such as deadlocks or high CPU usage caused by a particular thread.

To use jstack, you first need to find the process ID (PID) of the Java application you want to analyze. You can get the PID using the `jps` command, which lists all the Java processes running on the machine.

Once you have the PID, you can run jstack using the following command:

jstack

Here's an example:

jps // Output shows processes and their PIDs // 12345 MyJavaApp jstack 12345

This will output the stack trace of all threads in the MyJavaApp process.


jstack Java thread stack trace diagnose issues Java process

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