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JVM Internals: Virtual Machines & Runtimes | LowLevelCraft

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Virtual Machines & Runtimes
JVM Internals

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JVM Internals

Understand how Java bytecode runs. Inspect bytecode with javap, parse .class files, build a minimal JVM, understand class loading, JIT compilation tiers, and garbage collection.

~360 Minutes 8 Challenges

JVM internals bytecode tutorial

About this subtrack

JVM Internals covers class files, loading, JIT tiers, and GC at a systems level.

Tasks (8)

Inspect Java Bytecode with javap -c

Parse a .class File Format Manually

Implement a Minimal JVM That Runs Hello World

Understand JVM Class Loading: Bootstrap, Platform, Application

Understand JIT Compilation in the JVM: Interpret -> C1 -> C2

Use JVM Flags to Print JIT Compilation Logs

Understand JVM GC: G1 Regions, Remembered Sets, SATB Barriers

Implement a Simple GC for Your Mini-JVM