How to take thread dump from JVM

Step 1: Get the Process id of your java program. JDK ships 'jps' command which list all java process ids.

public class GetDump {
    public static void main(String args[]) throws InterruptedException{
        Thread.sleep(20000);
    }
}

Run the above program and run the jps command to get the PID of this program.

Example

C:\>jps -l

7632 GetDump

1048 sun.tools.jps.Jps

2620

Step 2: use jstack command to obtain thread dump.

jstack pid

Where pid stands for process id.

Example

C:\>jstack -l 7632

Where 7632 is the PID of GetDump program.

Output

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