JVM Notes

Read the two JVM study notes in their original order.

2 posts · In reading order

1. 1.

   JVM Notes (Part 1)

   Notes on Java bytecode, stack frames, and JVM runtime data areas, together with common startup options for heap memory, thread stacks, garbage collection, and heap dumps. Parameter conversions and capacity examples illustrate memory configuration, followed by the difference between memory leaks and running out of memory.

2. 2.

   JVM Notes (Part 2)

   A collection of common JVM diagnostic tools: use jps to obtain Java process IDs, jinfo to inspect or adjust runtime options, and jmap to view heap information. The article also introduces graphical tools such as jvisualvm and jconsole and explains how to connect to a local or remote JVM to inspect its options.