JVM Architecture in Java (Hindi) by Deepak (Part 1)

#java #javatutorials #deepak #smartprogramming

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(Deep explanation with notes are provided at the end of the videos, thanks)

Virtual Machine
- Virtual Machine is a software simulation of a machine which can perform operations
similar to physical machine.
- Virtual Machine is not physically present.
- A virtual machine, usually known as a guest is created within another computing
environment referred as a "host." Multiple virtual machines can exist within a single
host at one time.

- For eg. Calculator software in operating system, which is not physically present, but
performs all the functions similar to physical calculator.

- Types of Virtual Machine :
1. Hardware Based or System Based Virtual Machine
2. Application Based or Process Based Virtual Machine

- JVM (Java Virtual Machine) is Application Based Virtual Machine.

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Java Virtual Machine (JVM) :

- It is a Runtime Engine responsible to run java based applications.
- It has two main tasks :
1. load .class file
2. execute .class file

- Main components of JVM :
1. Class Loader
2. Memory Areas
3. Execution Engine
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Class Loader :

- It is responsible for the following three tasks :
1. Loading
2. Linking
3. Initialization
- Loading
- Linking :
In linking three activities are performed :
1. Verification
2. Preparation
3. Resolution
- Initialization

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Memory Areas :

Total 5 types of memory areas :
1. Method Area
2. Heap Area
3. Stack Area
4. PC Register
5. Native Method Area

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Execution Engine :
It is responsible to execute java class file.

It contains mainly two components :
1. Interpreter
2. JIT Compiler

[SmartProgramming]

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[harshitpatel]

Never found such a deep content video of java free of cost

[nasrinreja]

He is really a great teacher, and I like the way he explains the programs

[aswinikumarbehera]

mene jitne bhi vdo dekha apka vdo acha laga so collection frame work, exception handling and threading banao gi to bht acha hoga hame bhi kucha sikh na he so isliye msg kar diya
sir ihope ki ap vdo banao gi thank u sir

[gauravbansal]

Hi Sir,


Your explanation of Java in these lecture is awesome and mind blowing.
I have one issue regarding this lecture "JVM Architecture in Java (Hindi) by Deepak (Part 1)". It's seems incomplete. Here you have not explained the last three part of Memory areas. Please have a look in this and resolve this problem ASAP.

[nikkm]

thank you very much Deepak. A wonderful explanation. I have no words to appreciate.

[ranjitpatil]

Thank you sir, got clear idea about the

[mounisweety]

Sir, I have not understood what is the work of Resolution. You have mentioned Resolution replaces the symbolic references with original references. Can you plz give an example to understand clearly.

[shalinisen]

Nice explanation given by you.. great efforts (Y)

[dikshadeshmukh]

Thank u so much sir...It's too useful for me...😊✌

[RahulSingh-gmgk]

very nice videos deepak sir
please make on other languages also like python, c, c++, etc..as i am college student so it helps a lot sir

[aditik]

you are too good in explaining things in detail. Thank you so much :)

[yashpal]

very nice and get proper understanding of JVM.

[jiyakumari]

Nice sir I'm waiting ur video but u didn't upload video related to java and seriously i have seen ur all video that's easy way u explain whatever i want😊

[rashidakhan]

Thanks a lots sir 🙏🏻 it's very useful for me...

[Chaitanya_sariyal]

Bro you nailed it real jitu bhaiya😎😎😎😎

[subhraleenamahapatra]

Hello sir your all videos are very understandable .. but java collection videos are also we need kindly upload java collection videos

[vinodchavan]

Very useful video sir thanks for this video. I have learned easily JVM
& please create a interview questions and answer video

[ksiandramalovers]

This video is good no doubt but for more clarification please used examples like he said static int a=10

[AlumniMIM]

Sir, Stack area, PC register & Native Method area explanation is not found in this clip