JDK, JRE, JVM: What Are They and What Are Their Differences?

JDK, JRE, JVM: What Are They and What Are Their Differences?

Today, we'll discuss the Java Development Kit, Java Runtime Environment, Java Virtual Machine and what the differences are among these three. If you want to learn more about this topic, you're in the right place.

Today's video is brought to you by The Learn Programming Academy's Java Programming Masterclass for Software Developers

Beginning C++ Programming - From Beginner to Beyond

My name is Tim Buchalka and I have put together a series of videos which I call the "Programming Tip of the Day". And basically, each video goes through talking about some of the pitfalls and things that you'll need to overcome to succeed as a programmer, things like overcoming frustration and keeping yourself motivated.

In this series I will also answer common questions about choosing a programming language to learn, questions about your career path and things of that nature. Now there's a lot of other things as well that I'll cover in these videos and I'm also opening the lines for you to tell me what you want me to cover.

Now I've been a programmer for over 35 years so I think I'm really qualified to answer a lot of these questions. So if you do have a question, pop the question in the comments section of this video and I'll do my best to address that in a future video.

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[spiralni]

JDK to create a program
JRE libraries needed to run the program
JVM converts the bytecode to a machine instructions

[likithr.n]

I've gone through his udemy course, believe me, you don't need anything else to master java apart from his course
He's simply brilliant.

[Geminis]

Thank you so so much for the video explaining the differences between JDK, JRE, and JVM. I really appreciate it!!!

[stevennoriega]

This is hands down the best explanation on the internet.

[isurujn]

I've always been confused about these 3. Thanks for this video. Very well explained.

[Jiawii]

So Java Runtime Edition and Java Runtime Environment are actually the same thing?

[WanderingNasi]

JRE = Joe Rogan Experience. I think I'm at the wrong place...

[antonrhein]

A great introduction for any aspiring developer. Thanks for your efforts ! :)

[amlanalok]

I loved this video.
I have crystal clear clarity after watching this.

[RameenFallschirmjager]

I love learning java with aussie accent!

[AbhishekSingh-xgzj]

Thanks a ton sir for giving such beautiful explanation ❤. Keep making such awesome videos on such core Computer Science concepts

[reshmag]

I purchased your Java Programming course in Udemy. Its excellent. 😇. So happy to see you here

[Spooky_man]

2:20 : It has been years...
Finally I found my explaination! Oracle DID NOT make Java "pay to use"

[senthilkumaran]

Great and clear explanation of the concept.

[ugqueen]

Easy to follow! I always refer back to this!

[MK-roue]

This is a great introduction video. I appreciate it!
It would be great if you can create a video which goes in more depth about these general concepts (or even class lecture on udemy or similar, I think lot of people would be more then rather to subscribe to those - I know I would).
1. General implementations of JVM - history - which language is used for JVM implementations to run compiled java code (since we have multiple VM implementations, common oracle written in c++ ). There are multiple compilers as well (common one is the javac compiler by oracle that is mainly written in C) ... why multiple of them .. how? Beef between google and oracle :) (dalvik vs oracle vm ... ) what is happening there from perspective of tech details ...
2. Now when OracleJDK is "subscribe on" and when you need to pay for it... what kind of ifferences we have between openJDK and OracleJDK speed wise .. Based on my limited knowledge about this subject, i saw that there is a decent amount of difference based on the benchmark results ... - is openJDK suitable for programming enterprise scale softwares (especially network related microservices across multiple machines) ?
Even maybe to explain subscription principle (per core, machine etc ... in more details, based on example ... this part is extremely confusing ... eg. if you have x amount of machines with 2 core processor each running java, how much you need to pay per month?)

I think those twos above are interesting subjects - and it would be great if you can shed some light on those :)

[manavacharya]

I had to check if I had the playback speed to normal or not XD

[bassamkhalid]

I study that all high-level languages are platform independent but not operating system independent, what is the defference between that and java independence ?

[bambooflute]

I want to run small old java based program in my computer but I am scared that Java is unsafe. How can I handle this? Out of JDK, JRE and JVM whic one is safe?