JVM Architecture Explained 🚀 (ClassLoader, Memory, Execution Engine + JNI) | Java 0 to Infinity #3
In this video, we deep dive into JVM Architecture from basic to advanced using a real Java example.
📌 Timestamps (Chapters):
00:00 Introduction & Roadmap
00:46 What Does JVM Actually Do?
02:15 JVM Architecture (Big Picture)
03:02 ClassLoader Subsystem (Loading Phase)
05:45 Bootstrap ClassLoader Explained
09:55 Extension ClassLoader Explained
14:37 Application ClassLoader Explained
17:18 Delegation Model (How Class Loading Works)
26:48 Linking Phase (Verification, Preparation, Resolution)
37:15 Initialization Phase Explained
43:27 JVM Memory (Runtime Data Areas Overview)
45:30 Method Area Explained
47:33 Heap Memory Explained
49:18 Stack Memory Explained
51:11 Program Counter (PC Register)
53:06 Native Method Stack
54:23 Execution Engine (Overview)
57:05 Interpreter Explained
58:42 JIT Compiler (How Java Becomes Fast)
59:57 Garbage Collector Basics
1:01:32 Java Native Interface (JNI) Explained
1:05:52 JNI Example (Step-by-Step)
1:08:46 Native Method Libraries
1:09:45 Full JVM Architecture Example (Putting It All Together)
You will learn:
✔ How Java code runs internally
✔ ClassLoader subsystem (Loading, Linking, Initialization)
✔ Runtime Data Areas (Heap, Stack, Method Area)
✔ Execution Engine (Interpreter, JIT, Garbage Collector)
✔ Native Method Interface (JNI)
✔ How Java interacts with C/C++ using native libraries
We will also walk through a practical example using a Student class and understand how each part of JVM works step-by-step.
This is part of the "Java 0 to Infinity" series 🚀
If you want to truly understand how Java works internally, this video is for you!
💻 Topics Covered:
JVM Architecture
ClassLoader Delegation Model
Memory Management in Java
JNI Explained
Native Libraries
Real Execution Flow of Java Program
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