5 Java concepts you MUST KNOW!!
Рет қаралды 303,047
Күн бұрынIn this video I want to discuss 5 Java concepts that you must know as you start you career as a Java software engineer.
#amigoscode #java #javaconcepts
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⭐ Table Of Contents ⭐
===========================================
00:00 - Intro
01:24 - IntelliJ IDEA
02:58 - How Java Memory Works
04:06 - The Java Language
05:52 - Data Structures
07:15 - Testing
09:58 - Outro
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❤️ Thanks for watching
@amigoscode 2 жыл бұрын
💯 IntelliJ Course here: amigoscode.com/p/intellij 💯 Join Private Facebook Group and Discord - amigoscode.com/p/join-community
@adilwise 2 жыл бұрын
Hello brother, I'd love to get on a project with you. No matter how little. I don't expect to get paid or anything. Hoping to hear from you.
@n4870s 2 жыл бұрын
I can argue memory internal work is critical. You basically need to know how when and where to declare vars.
@shurazeta Жыл бұрын
When we could enjoy the memory java course?
@dadi7465 2 жыл бұрын
1-IntelliJ 2-Java Memory 3-Java Basics 4-Data Structures 5-Testing 3-classes,abstract classes,objects,inheritance especially interfaces 4-list,maps
@edupazz Жыл бұрын
Thanks
@Judosaper 10 ай бұрын
Thank you
@downfall991 2 жыл бұрын
I like the fact that you are focusing on teaching us how to become better programmers and not just how to program. Thank you for that! 🙂
@rxtechandtrading 2 жыл бұрын
That is true he is good that way-i like this guy-very personable
@matjazkranjc3511 2 жыл бұрын
I totally agree. I have more then a decade of java dev behind me and through this foundations you can achieve anything. Thanks for clear explanation!
@anastasiagavrilita6567 2 жыл бұрын
Your videos are clear, always up-to-date, and just easy to follow along, a blessing!
@leonid8341 2 жыл бұрын
Thank a lot for your videos! Dont you plan create courses explaining "deep spring"? How annotations works, how beans initialize, how to inspect context, what happens when we work with AOP (aspect), how to deal with all of this, etc. Something like "Understanding Spring not for beginners"
@river4267 2 жыл бұрын
This would be great actually. People suck at explaining this stuff lol
@lijanivanwykdevries4174 2 жыл бұрын
Absolutely! Would be a super help if you made a video on that
@mateusribeiro5754 2 жыл бұрын
I am not an english speaker (i am brasilian), but i love your videos because you pronounce the words correctly, without slang and abbreviations and it helps me to understand. thanks!! =)
@WisomofHal 2 жыл бұрын
I'm a Java Developer. These tech talks are awesome. Having a coffee and talking Java, literally two of my favorite things! Great video brother.
@achmadsyarif5129 2 жыл бұрын
Hi sir!! i want to ask something,I'm a college student and I chose Java as the language I want to study, and I enjoy it, but my friends recommend learning other than Java because they say it's rarely used in industry? is this true? thanks in advance
@WisomofHal 2 жыл бұрын
@@achmadsyarif5129 This is not true. How much industry experience do your college friends have. I went to college for 4 years and have been in the industry for 3. Java has a SDK (software development kit) for almost every major technology. Here’s a short list: Adobe Experience Manager (uses Java exclusively on the backend and pays well), Salesforce, AWS (the largest cloud provider contains a large Java SDK to write lambda functions, interact with EC2 instances, S3 buckets, security groups and so on), Spring framework is a massive web framework (uses Java and pays handsomely), and the list goes on. Java is a strong language of choose for web development, mobile application development, and desktop development. If you’re interested in big data, Apache Spark has a large Java SDK which can be used for data engineering, ML and data analytics (as well as AWS). Of course, language is just a tool. Maybe Python would be better in other situations or you may need to use JavaScript. Either language or knowing all three is ideal. But if we’re just talking about Java, you cannot go wrong as is used extensively throughout industry. Java is used extensively for interviews when writing data structures and algorithms because it’s not a very hard language to learn and it’s truly object oriented. Trust me, knowing Java well can provide a great career for years to come.
@achmadsyarif5129 2 жыл бұрын
@@WisomofHal I'm a little hesitant because most of my friends study web development, they learn php, laravel and so on, besides that maybe I still haven't seen the concrete form of learning java results, unlike web development. thank you very much sir, your answer really strengthens my determination to really explore java, and it is possible to also learn other tech stacks while learning java, hopefully you are always healthy.
@MrRomanvideo 2 жыл бұрын
Exception handling might be added, multithreading also. Clean code and java code convention defenitly MUST to know
@chillappreciator885 2 жыл бұрын
Nah, multithreading is not that important. In real world projects all that stuff is happening underground. Anyways as a newbie you won't understand it good enough to actually apply to anything meaningful. So not worth to spend your time
@BlazedOutTurtle 2 жыл бұрын
@@chillappreciator885 idk about that, I agree that beginners shouldn’t dive too deep into concurrency, but it absolutely helps to at least know about race conditions or know how thread pools work at a high level, most industry level applications involve some type of parallel and/or concurrent execution.
@MrRomanvideo 2 жыл бұрын
@@chillappreciator885 agree, not for beginners
@makumbo22 2 жыл бұрын
Amazing video as always... with important core concepts and not just teaching motivation aswell.... amazing tutor... and friend :)
@mouadmoufidi7882 2 жыл бұрын
Can't wait to see the second part ^^ Thank you for everything :D
@faizalimuhammadzoda4731 2 жыл бұрын
Jazakallahu khayran! I am learning a lot from your tutorials and other videos. What you are doing is sadaqatul jariyah, in shaa Allah.
@mohammedsfr7514 2 жыл бұрын
Brilliant content as always,with a very important concepts. Keep Going Bro 💪 Baraka Allahu Fik 🙏🌸
@dimpho.ngache 2 жыл бұрын
Great selection of concepts, but I would also add understanding the time complexity of the code is also crucial, especially working with large datasets.
@gabrielfono844 2 жыл бұрын
I really appreciate this video I recently got my first job as software engineer for the minister of defense here in Seattle waghinston. I am taking your java courses since they focused more on java , react, docker and other tool. as junior developer , they told me to focus more on java to be honest I really love your courses. they are lots of things I didn't understand in JavaScript and now I really understand it in java.
@yaseentarek5819 2 жыл бұрын
I think that you are the best one I have ever listen to him about programming in general and java programming you really teaching how to be a real software developer ....just keep going
@henrypellowski3394 2 жыл бұрын
I'm sooo glad I found your channel. Your information is very concise and well thought out. Thank you so much for your work. It is VERY much appreciated.
@AHairyBum 2 жыл бұрын
Testing is not about finding bugs or making sure the code works. A test is your first user of your code. Thinking about your tests can really help you create better and cleaner code, it puts you in the mind of the client rather than author of the code. "Test your software, or your users will" The pragmatic programmer by David Thomas and Andrew Hunt
@rxtechandtrading 2 жыл бұрын
I agree with you on that one-unit testing id essential but few instructors do it
@MaryamMaqdisi 2 жыл бұрын
That's a really good way to put it
@jorgeluishernandez10 2 жыл бұрын
Hey Nelson! Thanks for your advise, I'm a software engineer, and I think the software architecture concepts are really important.. hope you can talk about someday about it! Best!
@SVSingam273 2 жыл бұрын
@Amigoscode. I would really like to see a complete tutorial on Data Structures and Algorithms using Java on your Channel. I am beginning my preparation for Software Engineering Interviews and I think a Tutorial as well as It's Implementation on a Few LeetCode Problems would be amazing. Thanks. P.S. I love all the content you put out.
@DmytriiPavlichenko 2 жыл бұрын
Man, the content you create is amazing. thank you
@lukasjacobs2358 2 жыл бұрын
One big problem with IntelliJ: There's a lot of legacy projects out there that are still maintained in eclipse and are not easily portable to another IDE.
@glowiever 2 жыл бұрын
in my case it's netbeans lol
@mikseros123 2 жыл бұрын
I am using Eclipse for a long time. ALso Eclipse + STS. And in my opinion, for spring boot Eclipse + STS is wheey better than inteli...
@josetobias8084 2 жыл бұрын
Not only for legacy projects I would say... no Java IDE will ever come CLOSE to what Eclipse can offer for the developers. Companies that work with closed source software will use it to have internal plugins (any of the big tech companies with a Java and/or C/C++ stack), and big companies that want to offer a professional environment to attract developers will use it to provide a truly immersive and evolved experience (STS). IntelliJ is cool, yes, it's very good, it's amazing. But Eclipse is much better and is the standard when we talk about Java development. JetBrains has other amazing tools that are the standard, but IntelliJ is certainly not one of them.
@PutsOnSneakers Жыл бұрын
WTF are you all talking about? source code is always independent of what IDE you're using... ¯\_(ツ)_/¯ you can load up any java project in any java compatible IDE. just dont expect IDE specific settings to be picked up by the IDE.
@lukasjacobs2358 Жыл бұрын
@@PutsOnSneakers Hate to break it to you, but that's not true in practice. In theory, yes. But in practice, you very often have weird interdependent projects and things like completely non-standard build configurations that only really get picked up by a single IDE. This is especially true in big and old codebases. I've seen that multiple times.
@mudassirshahzadkk 2 жыл бұрын
1 - Intelli j and shortcuts 2 - How JVM works (Heap, Stack, String pool, Garbage Collector etc) 3 - Know the basics (Classes, Objects, Inheritance) 4 - Data structures (Most important: List and Map) 5 - Testing (Especially Unit testing and Mocking)
@davemerkury 2 жыл бұрын
Nelson with the clutch message!!! Thank you bro! I am taking this to heart to become better and grow!!
@omaral-dahrawy1134 Жыл бұрын
Your videos are absolutely amazing man. You focus on really important concepts, pretty much anything I come across I can find a video about it here.
@alfbaez 2 жыл бұрын
Brilliant question! and the answer is: Never…. I've been refreshing and re-learning lots of concepts. Also excited about the GoLand and CLion Courses coming up!
@johnnya246 2 жыл бұрын
We can hardly wait for the new Java course! Keep up the good work!
@theSDE2 2 жыл бұрын
Please make more of such videos for Java. I really love your content
@zer2858 2 жыл бұрын
Muito obrigado, amigo. Espero que nos traga mais conteúdos similares.
@joaogoncalves9936 2 жыл бұрын
Os cursos são incríveis, sempre recomendo ao pessoal da universidade porém eu só consigo assistir pelo KZfaq,pois tem a opção de tradução automática. Seria legal se tivesse no website a opção.
@arancle154 2 жыл бұрын
So true with testing because I hate writing test but it has saved me time and discover new errors! So true
@Kindkod583 2 жыл бұрын
Ramadan moubarek bro :) thanks jazaka alaho khyran
@cortney2631 2 жыл бұрын
Peace unto you, too! We benefit greatly from you sharing your knowledge!
@futur2214 2 жыл бұрын
شكرا جزيلا أخي جمال على مجهوداتك الرائعة.
@AHMEDNOORMABDI 2 жыл бұрын
Asc Nelson, thanks for your clarification, and it really opens my eyes to what should I have to focus on.
@danielalejandrocoronelberr8113 2 жыл бұрын
Gracias amigo, solo por ti me gusta java xD lo vendes muy bien!!! Greetings from Bolivia, thanks for your amazing vídeos!
@szeeshan896 2 жыл бұрын
Walaikum assalam brother Thank you so much Amigo for realising me that skipping testing is bad idea of my development part.
@ebjrtux 2 жыл бұрын
That's amazing explanation about this concepts, but i don't love tests,OMG!!! Congrats!!
@nmilyaev 2 жыл бұрын
Thank you for the inspiring videos. I would also like to see a video/course on refactoring to the patterns
@erickjhormanromero6905 2 жыл бұрын
Great video and i feel happy that i've already been working on them long time ago
@andromydous 2 жыл бұрын
I have a question that either I don't know enough technical terms to be able to search for the solution, or I'm not phrasing it right when I search. So, maybe someone in your community can help. Class A takes object X's information and writes it to a file with a string variable from object X as the file name. It then passes it off to Class B who checks user input info against the what's on file, it sees that it's valid and passes off to Class C who apparently has amnesia. It can't find the file because it knows nothing about object X's string variable to look for said named file. I say Class A, B, and C, but they're really frames. Frame C won't open unless Frame B says it's okay. How is it that Frame B is able to read the file written out by Frame A, but Frame C can't so it just writes to an empty named file (eg: instead of file.txt, it writes to .txt)? I have it such that the file is tied to the object so that another instance of said object can't have access to it, but it can have it's own.
@lukmanmudi5742 2 жыл бұрын
That first question really hit hard!
@TrairiChillHop 2 жыл бұрын
Wow i do work with eclipse for a long time. actually it was the first IDE that I ever use
@vitaliypunko1331 2 жыл бұрын
Thank you! I look forward your new videos about memory and use interfaces. You are cool 🙂
@returncode0000 2 жыл бұрын
Not to forget: Debugging in IntelliJ (remote and local), How to read Code, learn to code with a the reference doc when you implement against a new framework and don't seach hours for examples/tutorials, find a mentor, learn to concentrate on coding for about 2 x 1,5-2 hours a day without getting distracted.
@W4TZ1234 2 жыл бұрын
I’m learning java now and this video came at the PERFECT time, thank you so much
@in-thegarden 2 жыл бұрын
Hey I’m learning java too I’m 5 months in its intense. How far in are you?
@eltorocornal2649 2 жыл бұрын
@@in-thegarden i am going to start lear ing java but i am stock on where and what kind of java to learn. Could you suggest ?
@in-thegarden 2 жыл бұрын
@@eltorocornal2649 I’m not sure I can advice you on that as a novice myself. Perhaps someone at a more advanced level can help here. I’m learning java 11 and 17 . 17 because it’s the latest one the last time I checked and 11 because I’m getting ready for a certification along the way.
@user-mv2dq1xr4v 2 жыл бұрын
Love from Greece! Great videos!
@AndrewMorales928 2 жыл бұрын
Yes testing is important. Unit and integration tests are important for any project. Also too use the right tools for that specific test cases. Ive seen using mocking the calls in integration tests and I'm like 🤔🤔
@tonycommolli8341 2 жыл бұрын
You missed the biggest concept of all - OOP. It is the unifying technology of all the main programming languages. However, you did mention inheritance as a sub-concept.
@arahnid_9844 2 жыл бұрын
I learn Englesh and programming from your videos. Thank's for your work 👍
@ianbdb7686 2 жыл бұрын
Can't wait for the JVM and interface video I really need it because I took 2 java courses before covid and remembered nothing
@heyyrudyy404 2 жыл бұрын
Better than that, How people build a mental model about Java ? I think this is really the must.
@gilneyn.mathias1134 2 жыл бұрын
I'm just so used to use VS Code that it feels really hard to change for anything else ;/ (even tho Java on VS Code doesn't feel too good, tbh, with the intellisense just stopping working from time to time or the maven packages not being found sometimes too...)
@jgdevelops8440 2 жыл бұрын
i broke my femur trying to use vs code with java. But i also broke my other femur trying to learn eclipse :(
@hatemlajili8965 2 жыл бұрын
Thank you brother for what you do 😊😊
@chukwudiumeagu9465 2 жыл бұрын
I appreciate your effort and time to build java community, Inshalla we will get there . Please can you inclued to explain how java virtual machine works in our code?
@ds866 2 жыл бұрын
Thank you so much Bro, i got many insight from you, may Allah blessing you bro...🙏🙏
@mohamedelshenawy2329 2 жыл бұрын
Really I like you and your videos I'm always waiting for those videos, Please keep it.
@SeanLawlorNelson 8 ай бұрын
This is a neat educational talk on Java. Thanks. I would like to learn more about the Java community as opposed to only about the technical and conceptual coding; although the latter is very important. I would point out that in most cases there are diplomatic garbage collection/disposal methods.
@bilalsajid1792 2 жыл бұрын
Bro your video of a day in a life of a software engineer was downloaded about an year ago in my KZfaq download just wanted to know about your life story by the way I am an aircraft engineer but have always been fascinated by softwares but discovered it later can you advise me how can I come into software development thanks alot Jazak Allah from Lahore Pakistan.
@TheStrategist314 2 жыл бұрын
Package structure. Literally file structure seems daunting to a beginner and that affects access levels and all types of other ripple affect stuff.
@Ravis98 2 жыл бұрын
Explain the errors we get when working with Java + Springboot + PostgreSQL! how to know them better and solve them!
@arulkumara8031 2 жыл бұрын
Sir please make a video for when to use interface and when to use abstract classes..
@JonasKeil 2 жыл бұрын
Well, this video is a great improvement in title and thumbnail!!
@yanurmal 2 жыл бұрын
Assalamualaikum, hi bro. Please make video tutorials for simple applications (such as phonebook crud), from the development process to deployment to the production server. To get a complete picture of everything needed in making an application using java, until the application is in production. Thanks.
@mokka8727 2 жыл бұрын
Very important question for me, can modern JavaScript eg. Nodejs …program spring framework as Java does? I searched around but find nothing.
@gleitonfranco1260 Жыл бұрын
I watched your Intellij tutorial and it made all the diference.
@jopadjr 2 жыл бұрын
Thanks mate...I would suggest next is about Interview Q/A.
@ryuhayabusa6816 2 жыл бұрын
Assalamalekoum, can we have a video about lambda, like all the add methode and tool we have in Java 11 since Java 6 ?
@_Username__ 2 жыл бұрын
Amigos brother, do you think I could use vscode for java and spring instead of IDEA? Why would I use/buy IDEA over vscode?
@tienthanh21697 2 жыл бұрын
Do you think vs code is a decent IDE? I'm new to Java and using that IDE but I'm not sure if it's a good choice in the long run
@rendyrexgwambat 2 жыл бұрын
can't wait for the java memory tutorials
@zaobenhar9702 2 жыл бұрын
walaykum salam my brother thank you so much for your efforts and ramadan mobarak!
@lizzmedina4195 Жыл бұрын
Some, please, can we tell me: How did he named the video about lists and maps that he mentioned in this one? ?. Thanks for your videos and good teaching technique, also the greatest attitude ever.
@mersalmohamed 2 жыл бұрын
Jazakom Allah Khairan
@midouwebdev2224 2 жыл бұрын
Wa alaikum salam brother. I really like this intro and your content is the best !
@banglepq 2 жыл бұрын
Thank a lot for your video!
@mirzasisic 5 ай бұрын
You have quite the talent for explaining things, brother! May Allah bless you!
@alencaroliveira3455 2 жыл бұрын
tks for sharing, I would add generics, streams and functional !!
@MrMoruss78 Жыл бұрын
Assalmu alikum I've subscribed to your channel! Great content here and Ramadan mubarak!
@developerforcloud1478 2 жыл бұрын
I am coding in java for a decade now. Used eclipse/sts for a long time, started using intellij. It is really nice IDE but I still use Eclipse/STS along with it. Biggest drawback, you cannot open multiple projects at the same time in IDE, and I hope everyone knows that lot of time we need to load multiple projects. Intellij has lot of issues with maven, caches, memory consumptions. If you have to work with some legacy project, may God help you. I use Intellij, VSCode and Eclipse/STS together. People should try VSCode for java development too.
@devserendipity3063 2 жыл бұрын
Jazak Allah khair brother mashaAllah good video. Could you possibly do videos on some programming principles with examples? Like SOLID?
@mihaiapostol7864 2 жыл бұрын
he did one, check his latest videos
@SQL Жыл бұрын
It's a great lecture. Thank you! 🥰
@sanjardjuraev 2 жыл бұрын
Waaleykum assalom brother, Maa shaa Allah, good to hear salaam in the begining of video, God bless you
@joenou744 8 ай бұрын
I love your videos. Can create a video of practical coding java? I learn java program for 3 years and I have never create a gui with java. Please could create video based on a real world application. ✌
@adventurestudios7 2 жыл бұрын
I don't know what's that thing you did at the end of the video but it was funny I had to hit the like button...
@KILLNIGHTANIME Жыл бұрын
Mashallah what a great video!
@DykyKryl 2 жыл бұрын
If someone starts to learn java from scratch eclipse would be perfect as a starter ide as IntelliJ could be rather complicated for the begginer
@risithgmt8908 Жыл бұрын
Hi amigo, do you have a video about how different java versions evolved, what are features adding or updated?
@serhat0099 2 жыл бұрын
As always - first like, then watch the video and not regret it in a single bit
@omarelmady 7 ай бұрын
May Allāh bless you. I'm a CS student and you're my number 1 youtube mentor
@santiagorey1382 2 жыл бұрын
Amazing Video :) thanks ..!
@nehurane 2 жыл бұрын
Hello Amigoscode, can we expect any discount for courses during easter weekend? I am mainly looking for k8s course.
@gehadqaki 7 ай бұрын
Wa'alaykum Asalaam Akhi! Bless you for the help with these videos🤲
@erenyeager4452 2 жыл бұрын
Assalamualaikum brother. Could you do a roadmap to become java backend engineer. with what courses to do.
@mohammedchfig2 2 жыл бұрын
@Areeb Ahmed Shariff what did you mean by weeb
@erenyeager4452 2 жыл бұрын
@Areeb Ahmed Shariff brother I am looking to improve myself. I am sorry if it has hurt you in anyway. Could you help me with the roadmap?
@erenyeager4452 2 жыл бұрын
@Areeb Ahmed Shariff brother, any udemy course you would suggest? please help me with me this.
@derren21 2 жыл бұрын
Try to google your question
@leonid8341 2 жыл бұрын
He has roadmap, on the header of main page
@salomoncancholaespinoza6392 Жыл бұрын
Thank you for the information 😊
@sameerakhatoon9508 2 жыл бұрын
Waiting for your next video 🤞
@Faisal-gp2cc Жыл бұрын
can anyone please guide me to any source to learn deep java concept like why (.toString )is used, proper working of linked list..
@mariofernandez238 Жыл бұрын
Gracias por este video, muy importante, muchas gracias
@najibraihan8788 Жыл бұрын
I think a stack frame is in the call stack, because it has pointers to the Heap, or I am wrong
@mandyronald8187 2 жыл бұрын
thanks bro. This is very informative!
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