Java Heap Memory Deep Dive | Garbage Collection Algorithms Explained | Java Full Course #46

In this in-depth lecture, we take a deep dive into Java Heap Memory, one of the most critical yet misunderstood parts of JVM architecture. If you want to truly understand how Java manages memory, how garbage collection works internally, and how different reference types affect object lifecycle, this video will give you complete clarity from first principles. What You’ll Learn in This Video Java Heap Memory Internals What is Heap Memory and why it exists Object allocation process in JVM Structure of Heap: Young Generation (Eden + Survivor spaces) Old Generation (Tenured space) Object lifecycle and movement across generations Age counter and promotion logic Types of Memory References in Java Strong References (default behavior) Weak References (used in caching) Soft References (memory-sensitive caching) Phantom References (advanced use cases) How references affect Garbage Collection Practical examples of where each is used Garbage Collection (GC) Algorithms Explained Why Garbage Collection is needed Stop-The-World (STW) concept Different GC Algorithms: Mark & Sweep Mark & Compact Copying Algorithm Generational Garbage Collection concept How JVM optimizes memory cleanup Real-world GC behavior and performance impact Why Learn Java? Java is one of the most powerful and widely used programming languages in the world. It is used in: Backend development Enterprise applications Android development Banking systems Large-scale distributed systems If you want to master Data Structures, Spring Boot, Microservices, or System Design, Java fundamentals are essential. Join Coder Army Whatsapp Group: https://whatsapp.com/channel/0029Va6H... Join System Design Whatsapp Group: https://whatsapp.com/channel/0029VbBF... Code and Notes: Github : https://github.com/adityatandon15/Jav... We offer paid course on Dsa, web development, blockchain, system design and GenAI. Join our Paid Course: https://strikes.in/ Coder Army: https://coderarmy.in/#home Coder Army app: https://play.google.com/store/apps/de... Connect with Aditya Tandon Instagram :   / adityatandon2   LinkedIn :   / adityatandon2   Twitter : https://x.com/adityatandon02 Timestamps: java heap memory, java garbage collection, gc algorithms java, java memory management, jvm internals, heap vs stack java, java weak reference, soft reference java, phantom reference java, garbage collector java, mark and sweep algorithm java, java gc explained, java performance tuning, java interview questions, jvm memory model, java heap deep dive, generational gc java, java memory leaks, java full course