Bangalore Java User Group (Bangalore JUG)

## We're excited to welcome two exceptional JVM experts for a morning packed with deep technical insights.

## Details

Location:
2nd floor, Block A, Oracle Tech Hub
169/1, BBMP Ward.150-Bellandur Sarjapur Marathalli Ring Road Hobli, Kadubeesanahalli,
Bengaluru, Karnataka 560103
Note: *** Event from 9.30am to 2pm, Lunch Provided ***

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Agenda:
➡️ Registration Opens @ 9.30 am

➡️ Talk #1: Post-Mortem JVM Crash Analysis with jcmd
When a production JVM crashes, developers are often left juggling hs_err logs, core dumps, native debuggers, and a maze of specialized tools. What if the same jcmd you use every day on a live JVM could also inspect a crashed one?

This session dives into JEP 528: Post-Mortem Crash Analysis with jcmd, an exciting OpenJDK initiative that brings familiar jcmd diagnostics to JVM core files. You'll discover the ingenious "process revival" technique that allows the JVM to safely inspect its own crash dump, enabling commands like Thread.print, GC.heap_dump, GC.class_histogram, VM.metaspace, and many more—all without reviving the original application.

We'll explore the engineering challenges behind making a crashed JVM "come alive" just enough to answer diagnostic queries, why this approach simplifies years of tooling complexity, and how it unifies live and post-mortem troubleshooting under a single interface. Along the way, you'll get a glimpse into HotSpot internals, core dump analysis, and the future of JVM serviceability.