Keyword Analysis & Research: jstack

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Frequently Asked Questions

What do I need to know about jstack stack trace?

jstack prints Java stack traces of Java threads for a given Java process or core file or a remote debug server. For each Java frame, the full class name, method name, ’bci’ (byte code index) and line number, if available, are printed.

How does jstack work in the JVM?

You apply the JStack command to a specific core file/ process, and it reports back every thread linked with the JVM (internal VM threads included), as well as the original stack frames. In addition to this, JStack can also identify resource usage overlaps (deadlocks) to troubleshoot the program.

Is there a jstack command for Windows or Linux?

NOTE - This utility is unsupported and may or may not be available in future versions of the J2SE SDK. jstack is not currently available on Windows platforms or on the Linux Itanium platform. Options are mutually exclusive. Option, if used, should follow immediately after the command name. process id for which the stacktrace is to be printed.

Is the jstack tool available in JDK 1.5?

The jstack tool is available since JDK 1.5. jstack works even if the -Xrs jvm parameter is enabled. It’s not possible to use the jstack tool from JDK 1.6 to take threaddumps from a process running on JDK 1.5. 3.

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