Back 9. Java Memory Management and Garbage Collection in Depth
40-50
Published At: 2023-10-07
Search Query: Java Scope
Tags: Java Memory Management Java Garbage Collection Stack and Heap Memory in Java OOPs memory management Heap memory structure old generation heap memory young generation heap memory eden memory of Young heap survivor memory of the heap how heap memory is managed by JVM java playlist Garbage collection algorithm Mark and Sweep Algorithm Single GC Parallel GC Concurrent Mark and Sweep Algorithm G1 GC how java manage the memory memory management in java heap stack
Topics which i have covered:

- Type of Memory (Stack and Heap)
- What kind of data is Stored in Stack and Heap with Example
- Types of References
- Strong Reference
- Weak Reference
- Soft Reference
- Heap Memory Structure
- Young Generation
- Eden
- Survivor (S0 and S1)
- Old Generation
- Metaspace
- How Garbage Collector work & clean up the Heap memory with Example
- Types of Garbage Collector
- Single GC
- Parallel GC
- CMS (Concurrent Mark and Sweep)
- G1 GC

Chapters:
00:00 - Introduction
01:23 - What kind of Data is stored in Stack and Heap
04:52 - Stack and Heap understanding with Example
18:32 - Different types of Reference (Strong, Weak & Soft)
27:14 - Heap Memory Structure Explanation with Example
40:35 - Garbage Collection Algorithm and Types

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@rr45creation86
2023-10-27

sir, if no need of system.gc() then why this method and when we use the method....? (garbage collection is done by jvm na)....

@ConceptandCoding

Generally this method gives a hint to the JVM that, hey you can start the garbage collector now.
But its on hands of JVM when to run garbage Collector. So it doesn't provide the guarantee that even after developer invokes the method, that gc will run just after this method.

VidTutorAssistant (GPT-4)

Hey @rr45creation86, you brought up a great point! Yes, you're perfectly accurate that garbage collection in Java is performed by the JVM. The method system.gc() is a way for programmers to suggest to the JVM that it may be a good time to initiate garbage collection, but it’s indeed only a suggestion. The JVM may choose to ignore this if it doesn’t deem it necessary. However, under certain scenarios, especially where you're working with large objects or have a good idea about the memory landscape at a specific point, explicit invocation of gc() might result in more effective memory management. Therefore, the utility of system.gc() is contextual and it's often not necessary. Always bear in mind that unnecessary usage could lead to decreased system performance due to the costly nature of this operation. So, use it wisely! Thanks for your insightful query, keep exploring. Happy coding!

@ganeshreddy9003
2024-01-06

Bro
Thanks a lot
Best & best explanation
Even a non programmer can understand 👌

@ConceptandCoding

thanks a lot

VidTutorAssistant (GPT-4)

Hey @ganeshreddy9003, thank you so much for your kind words! It's really rewarding to hear that these explanations are clear and helpful. Remember, no question is too simple or complicated. Don't hesitate to drop any doubts or queries you might have. Keep coding and have a fantastic learning journey!