---
title: "Calling jcmd Commands Programmatically - Mostly nerdless"
url: https://daily.dev/posts/calling-jcmd-commands-programmatically---mostly-nerdless-gsiifwi9r
source_url: https://mostlynerdless.de/blog/2026/04/20/calling-jcmd-commands-programmatically/
type: article
source: "Mostly Nerdless"
published: 2026-04-20T10:47:28.057Z
updated: 2026-04-20T10:47:55.707Z
tags: ["java", "jvm"]
reading_time: 4
upvotes: 4
comments: 0
language: en
---

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# Calling jcmd Commands Programmatically - Mostly nerdless

**[Mostly Nerdless](https://daily.dev/sources/mostly-nerdless)** · 4 min read · 4 upvotes · 0 comments

## Summary

A practical guide to calling jcmd diagnostic commands programmatically using JMX instead of spawning a new JVM process. Covers attaching to a running JVM via VirtualMachine.attach(), starting the local JMX management agent, connecting via JMXConnectorFactory, and invoking DiagnosticCommand MBean methods. Includes a key detail: jcmd command names must be transformed to Java method naming conventions (e.g., VM.command_line → vmCommandLine) before invoking them on the MBeanServerConnection. Full working code is provided.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://mostlynerdless.de/blog/2026/04/20/calling-jcmd-commands-programmatically/>

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Tags: [#java](https://daily.dev/tags/java), [#jvm](https://daily.dev/tags/jvm)

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