Stack and Heap: Memory Management In Java (The most important Concept in Java)

[@bibekkumarbazaz647]

The best video on memory management that I have come across. It gives a clear insight on how to write memory efficient code in Java. Will appreciate if you can make a video on streaming and how it works internally. Thanks a ton.

[@GAGamingLegends]

This video deserves more likes and views 🙏

[@techy0716]

Best illustrated concept of memory management in java

[@TechWithChetann]

Great explanation. I read that from Java 8 onwards the permgen has been removed. And instead of permgen we have a metaspace which is part of the native memory (which is not a heap memory) which is managed by the OS.

[@WeWalkAI]

Great video. JVM understanding is important not only for interviews but far beyond interviews.

[@praveenautomationinterview2367]

Hi Naveen, as always this is nice explanation!! Can we say that :Java Stack memory=Class (method) area+Native Method Stack+Variables memory area

[@akado5663]

Thanks a lot Naveen. That was a Video which I was looking for it but never could find. Thanks for the excellent explanation.

[@ABAutomationHub]

Best content on memory management..Thanks for sharing!

[@naveenautomationlabs]

Thanks glad you liked it. Please refer the latest video on java memory management

[@nandagopal375]

Thank you provide valuable information about Java memory management 🙏🙏🙏

[@jalalzoon4447]

Sir you have clear all concepts regarding java memory management. Thanks for your such great efforts in making video.

[@rachanabanerjee4696]

One of the best tutors you are Naveen.

[@naveenautomationlabs]

thanks for watching it @Rachana

[@ananthasubramanian7355]

Very good video....!! Crisp and Clear...!!! Thank you...!!

[@avishsharma3404]

Great Explanation , this is something that I found deepen understanding of memory management. Thanks Naveen

[@_________________404]

Thanks, very interesting video. I just wanted to see what is the diference between local and static variable storage but I've learned much more.

[@abhijeets6593]

Naveen, i want to add one point, permanent Generation is part of heap memory not stack memory as you said in video(28:03)

[@amanokuba4688]

Nice explanation, thank you...As for the back ground noise, you could add a faint background music to cancel and soften the high pitch noise....

[@saranthoughts9826]

I am always follow your channel for java related , you rocking pls keep doing the good work. great sir!❤

[@prabhatpatnaik205]

really it is very nice video, after read this, I clear my concept on memory heap and stack. thank you navin.

[@niloybasu6508]

Awesome explanation!!! Terrific!! Thanks a lot!!!

[@MrSpraveennaika]

My first nice video on Memory Management 👌👌

[@parikshitraghav7543]

I Like your efforts Naveen, Very very useful video for interview (I was asked these questions in mine!).

[@Priya1_123]

Great and deep explanation and information in detail . Better than all other videos from other youtube channels.. Just a small suggestion, if the diagram is ready then this video can be covered in bit less time.Awesome video. Thanks a ton

[@kunalsinha5942]

Thanks Naveen for such a informative video. I have a follow up question below:- If we create any Collection I.e Arraylist , Hashmap etc .. where is it created .. in Heap or Stack?Since collections stores the the object references rather than physical objects..How does it manage the whole process?

[@saikiran2356]

Kutha chimpi para dhengaw anna.... Mid nyt kuda chaala interesting ga chusaa

[@Saravanans-q4e]

Great knowledge you having sir. Thanks for this .

[@jaserq]

Just thank you.. i relieved finally.. i ve been seaching this for years !!!

[@yashasvirallabandi9070]

Great explanation. Thank you!

[@ramyapalani6760]

Hats off sir..very good explanation.. Pls continue this topic to cover garbage collection..

[@bollywoodtrailers7913]

It was really a very explanatory session. Got all the concept by this vesio

[@SeadoooRider]

I really appreciate your effort Naveen. Thanks for video :)

[@faisalsakib9810]

Thanks for such nice videos....can you please tell me after execution of a method... where the result is stored.???

[@meditationandrelaxationmus741]

never found so detailed.... thanks a ton!

[@shipraparihar6963]

Thanks Naveen for this amazing video. It is full of information and explained very clearly.

[@asimghosh5737]

Very nice👍👍👍 it's really helpful.

[@GauravSingh-ov9mh]

Great video. Just had a couple of query : 1. You said permgen is part of stack memory but you displayed them on separate boxes so that was confusing. 2. You said stack size is very less compared to heap memory. but than what about Permgen (or now Metaspace) . Is metaspace is less compared to heap? Thanks!

[@jeet_upadhyaya]

Thankyou for this video Naveen!

[@saraswathib9889]

Small correction in your lesson When the survivor space S0 is filled, it automatically goes to Old Generation after the minor GC. It will not go to S1.

[@dilipp007]

One of the survivor memories will always be free..

[@swapnilgupta6028]

Thank you so much Naveen but one Question, Cam you tell from which book you took reference ?

[@nikhilkhatri1417]

Very informative and nicely presented. Just the keyboard noise is lill irretating. Please upload any video on Class loading with context of JRE.

[@JaikratSinghTariyal]

Very good explanation. But this video is up to Java 7. Java 8 on wards, we dont have pergem concept at all. Its Metaspace now.

[@MrVinnap]

Jaikrat Singh Tariyal yes ... I was about to ask this questions. Now pergen is removed completely...

[@aritrabhattacharya7722]

This was really helpful. Thanks a lot.

[@madhulikaghosh3876]

Thankyou Naveen. This was so informational

[@sourabhhsethii7292]

Thanks for sharing this knowledge!

[@sreevanireddy1325]

Every Nice explanation sir, it's very clear to understand. Thank you sir.

[@ahmadreza7508]

Thank you so much for creating such a helpful video

[@nikhilgupta6564]

Very well explained .. Concise and clear .. Pls keep uploading more videos on JAVA

[@dinkarinjosh]

Any suggestion of a book for further reading and understanding this?

[@shijocg]

Very informative. I have one doubt why the survivor memory classified as two, both have same usage and purpose?

[@chigullapallysaiprasad6395]

Naveen ji extraordinary teaching thanks a lot for sharing your great knowledge please help in sql concepts as well.

[@AshutoshSingh-uc6nk]

Thankyou sir for this 🔥🔥🔥 explanation

[@arvindmv7166]

Very informative, but I was looking for information regarding MetaSpace.

[@namangoyal5578]

Great Work, I searched so many videos but this is my final stop !! Appreciate the efforts you did to make this :) One doubt : Is permanent generation the part of Stack Memory ???

[@RoshniGupta-bl6ex]

Hi Naveen, Very well explained! Can we get the pictorial view of this concept as explained in the video?

[@naveenautomationlabs]

Thanks for watching! But what do you mean by pictorial view of this concept?

[@sanjanapanwar3844]

method area is inside the permanent generation, so can we say that now method area is inside the metaspace

[@livefantastic2442]

very nice video. one question i had, corresponding to each thread is there a separate stack bcoz in case of multiple threads multiple functions may execute simultaneously thus each method need a method block. Though in a particular thread only one method will execute at a time.

[@khajazakiuddin931]

u really make it simple naveen... 😊...i still like ur amazing diagrammatic representation of concepts which make things really easy to understand...kudos bro... keep going...👏🙂

[@sureshgply]

Very good explanation for Memory management. Thanks Naveen

[@supriyakumari8552]

great information, fine details. :)

[@bopon4090]

Awesome video. I have one question do i need to run manual gc?

[@dupindersingh1599]

Question 1: At the time of Major GC, will the JRE do only Major GC ? or JRE will perform its normal tasks and in parallel Major GC will perform Question 2: When you said we don't have to do the Major GC frequently, is there any code we write explicitly for GC? I think JRE itself take care of the Garbage collection.

[@arijitbasu4397]

Such a quality content ❤️

[@nalithamsaisudha]

great explanation 👏

[@gyanranjan942]

Hi Naveen, Thanks for the explanatory video. It's really helpful. Just a small doubt, somewhere I read that SCP will get memory inside method area, you told it would get memory inside Heap... If you can explain more about SCP it would be helpful. Thanks again ☺️🙏

[@ayyapareddykandula8481]

Excellent sir, thanks for the video

[@mallikarjun-shurpali9698]

Nice explanation sir..

[@nishant2242]

Great explanation

[@shankardayal6928]

PermGen was part of Heap upto java 8. From java 8, it had been removed.

[@RanjithKumar-qj9mn]

Thanks Naveen . I have a question is premgen is also part of stack memory

[@RajanGupta-jf5mn]

Nice Naveen, very informative. :) by any chance any plans for a video explaining the metaspace concept also?

[@AhmedKhaled-he9mf]

very very nice explain I become subscriber because this video

[@narainsankar]

Great explanation..

[@vijayragavendran5606]

This is perfect! Great job man ! Thanks a lot!

[@zajuzam]

Nice Explanation

[@seshareddy7254]

Hi Naveen, Can you please make an video on difference between String,String Buffer and Sting Builder (Differenace bewtween Mutable and immutable )

[@svecww]

Thanku sir can u please share if u have any notes?

[@ThishK]

Great one!! One question to you Naveen. Do you know how to perform test for the product (Web based Game) where DOM element is hidden. I think all the DOM element is under the CANVAS?

[@princekumar764]

one word....AWESOME

[@prapasup]

Thanks much for sharing the information.

[@gyaraganesh7020]

sir , your explanation is very nice and make more videos thanking you very much sir

[@nalinaksheepanda1596]

Hi Naveen, Can you please cover topic for Contract in HashMap and Dependency Injection in Java.

[@somias1575]

Hi Naveen, one query on method block. You said one method at a time is given space inside it. But let's say we have a main method which calls another method inside it. How is this scenario handled?

[@mathiyarasu.tarasu6366]

Let's say we given 1 gb to 2 gb for JVM. How much memory will take each component?

[@parwana1000]

Bow down to u ...TY so much

[@mugeeshhk]

As per my understanding, 1. So at a time, one of the survivor space is always empty ? this correct ? 2. Objects that are survived after many cycles of GC, are moved to the Old generation memory space ?

[@kamnijaiswal8060]

Permanent Generation is also part of Heap memory.

[@ArjunArjun-bi2df]

hi naveen nice video...its very help full to understand the memory concept....... is there any hidden memory concept in java

[@shashankjakhmola6226]

If Test t = new Test() is defined as instance variable rather then defined inside some method like m1 method. In that case I understood that new test() will be creating one object inside the heap. But where the reference will be stored as it is not local variable it is instance variable ? And stack will store local variable and local references as much as i know?

[@aritrabhattacharya7722]

Hello Sir, I have some questions: So where exactly are new Strings stored (in heap or in stringpool directly)? And where is the stringpool located then (method area of permgen or heap)? There has been some changes in Java 7 and 8 to the permgen section. When does a string automatically move to striingpool provided intern methos is not called. Thanks in advance :)

[@SureshKumar-ul5ev]

Custom immutable store into which part of memory?

[@ShubhamGupta-du6ie]

Hi Naveen, How to perform GC for a particular object

[@rajajain786]

Hi Naveen, just want to know each application create own JRE on server memory? also what is difference between JVM and JMM?

[@ankit9953817851]

What if the reference variable is a class instance variable and NOT a method local variable? I believe in that case, the reference variable is stored along with the object of that class and NOT on stack. Please correct me if I'm wrong.

[@pragadees24]

Very Good One:) got some more Idea about JRE.

[@nikitaojha8768]

Can you please explain the difference between java 7 and java 8 memory management .

[@GurubabuJampala]

Memory Pool (Constant Pool) memory is available in Young Generation or Old Generation?

[@shashankjakhmola6226]

As much as i have a knowledge till now permanent generation is separate memory are and stack is separate memory area . But in this video somewhere at the end you are saying parmanent memory is part of stack memory which is making me confused can you please explain on that ? Is both separate memory area or parmanent is part of stack. ?

[@shashankjakhmola6226]

Memory leak will come on only in heap area right? If yes then in that case what we need to do in that case?

[@ramprasath4788]

Clearly explained ....

[@sancharidas7532]

What are JRE classes? The predefined classes or the ones which I have made ?? Someone help me understand please.