I'm a senior software engineer and I didn't need to listen to this video, but I did. I positioned myself as a beginner and I found your video really interesting. The method of iterative corrections (in the "bool == true" example) is awesome. People learn and retain better this way (from my experience). I would like to express an amelioration you could do: give reasons why this or that is better and I also would tell in which circumstance. Example: In the ternary example, I do prefer one liner too, but only if it is short. And moreover, why there was a mistake (because, in fact, in terms of code execution, there is no difference at all)? (This is not a question to answer here, I already have the answer). That's it! Great video!

@KidJV

Ай бұрын

i too prefer one liner as long as it is readable else give me an if-else

Since java 14 (i think) we can write switch statement using ->. for example: switch (caseIndex) { case 0 -> System.out.println("zero") case 1 -> System.out.println("one") default -> System.out.println("sth") } and using that we don't have to add break statement

@ReasonableRadio

29 күн бұрын

that's not too bad. Is it ever really necessary to have a switch statement in the first place though? I suppose it allows you to skip the step of having a table if you're truly just processing a unique output

Good Information! The only thing I think is important to mention additionally is that in the first example, you should also check for null values to avoid a NullPointerException. In general I think just comparing Strings with equals without considering null values is one of the most common beginner mistakes!

@salawujonathan6722

Жыл бұрын

Exactly. NullPointerException is one of the most common exceptions in the language.

Good format mate, knew some but certainly not all... fun to follow along.

Man i just love watching ur videos, learnt a lot of standards from ur code review videos. Currently i am planning to change jobs and quite afraid that i am not up to the level. :(. Keep posting these videos, i learn a lot from you, Thank u for everythiing

i started learning java 5 months ago and just found your channel

I am very new programmer, I took Amigoscode Java Master Class and I can proudly say that I am not doing not even one of these mistakes because the course taught we well. Thanks buddy! Now I see how the powerful your teaching really is

@YaroMalik

3 ай бұрын

Is it paid?

Thanks for sharing such nice quick tips. Can you please make detailed video on garbage collector in java and optionals topics, please? Appreciate your explanations 👍

Learned a lot, thanks Nelson

Thanks for this, comrade! Excellent summary

Really amazing, man! As junior developer I really want to thank you for the tips.

keeeeep doing theeeese short clips. I love them. Thanks

12:09 you can write do-while loop instead the while loop to make it good concepts of loops

Salam Bro, This is very helpfull, barak allah fikom, eid mubarek

great content amigo!!!! hope you are doing great!!!

Thanks for the lessons man. May Allah reward you abundantly.

Very usefull tips. Thank's!!

wow realy good work thanks a lot i love to see tips and optimisations

really helped me thanks a lot

thanks for the info. But I think it would have been much easier to use the "new switch expression" available since java 12, if we used that our code would have been switch (caseIndex) { case 0 -> sout("zero"); case 1 -> sout("one"); case 2 -> sout("two"); case 3 -> sout("three"); default -> sout("default") }

@moromann1

Жыл бұрын

Cool! I didn't know that! Is it only when the case is a one-liner?

@rvbsm

Жыл бұрын

@@moromann1 not only. Just use curly braces if code is longer than one line

@KingstonFortune

Жыл бұрын

yes! same thing came to mind immediately I saw the switch

@schleuxy2

Жыл бұрын

From my side its can be better by return ning the value and apply the sout outside the switch. Because in this actual case thé switch is doing two things so its not single responsibility. If after you need only the values without print them you would have to create à New method to do the same thing. Or you would have to refacto your code to what I proposed before.

@soniablanche5672

Жыл бұрын

I wouldn't even use a switch for this, just a simple array. String[] numbers = {"zero","one","two","three"}; if(index numbers.length) { return "default"; } return numbers[index];

Hey @Amigoscode, I have been watching your channel for a while and I think it's the best Java programming channel on KZread. Keep up the hard work and wish you all the best.

Thanks for the video and Ramadan Mubarak, brother!

Very helpful in fact at the right time against cosc211 Java OOP exams we'll have tomorrow.

nice to hear you, maestro :)

Great piece of info for Java developers.

thanks for the nice tips!!!

Asalamu aliakum wr wb. MashaAllah.. Love the content. May Allah make you Mufti Menk in programming. Love to hear your advices.

Thanks for the video

بارك الله فيك!

Thank You man

5 Months ago, I started studying cs in university, i still have no clue about coding... (lol) Afters seeing your video, i got smarter. Nice teaching!

Hai brother, very useful your videos thank you so much... Please make video relate to Java Design patterns

Many things looks similar to JavaScript, I'm thinking of learning Java after mastering JavaScript

وعليكم السلام! جزاك الله خيرا!

Top tips! 💡

4:45 Worth stressing how important it is to use interfaces. This is a very simple example, but if it’s being passed around your codebase as the concrete implementation, that’s a lot of places you’ll need to change if you decide to use a different implementation… The same is true for when you use third party libraries, database etc. You will usually want some interface to that code

@IvanRandomDude

Жыл бұрын

Sounds like 2 sec job using any decent code editor

Thank you a lot for your video. I am interested in your course master class, but it is a little high course. Do you provide any ways to get coupons?

Awesome!

God bless you brother 🙏

Can you please make a video about event-driven architecture with Spring Boot and Axion Framework please ? and thank you

Thanks bro

Amazing content as usual

Can you make separated playlist for same videos, pls? Also thank for video i will share this with some collogues which cant write good code

I literally laughed for 5 mins after seeing the thumbnail 😂😂

@Starchaser38

Жыл бұрын

I was staring at it a few seconds thinking "Who in the world compares a datatype and a value??" 😂

@pyroandi6797

Жыл бұрын

@@Starchaser38 In Java it's boolean, you probably thought about some other language like C :D

@Starchaser38

Жыл бұрын

@@pyroandi6797 Yes, I come primarily from C/C++ 😅 Those were very hilarious few seconds, before I realised about the different type names 🤣

great content amigos, well done

MashaAlloh. JazakAllohu xoyron

thanks brother

I think I could consider myself as a senior developer because whatever you explained in this video i know all of these.

Awesome content

For next Video can you Kindly show us how to make our spring docker images connect and communicate with non-dockerized applications or databases

Pushing the algorithm ❤

Amazing your java programming videos I have one doudt of oops concepts Give me one real time examples video , like gaming topics example on oops

Hi bro i am writing an ecommerce site using Java for backend. What better way to store product images.

Thanks for your videos! BTW, I was thinking about this situation: there's an enum for statuses - and I was writing a method, that would make something depending the enum and then return enum.toString - but formatted to a more common format - first letter capital, than all letters in lower case, and _ replaced with spaces. What would be a better way - using StringBuilder, or getting substring(0,1) + substring(1).toLowerCase().replaceAll etc.?

@KingstonFortune

Жыл бұрын

might as well use streams...

@KingstonFortune

Жыл бұрын

Arrays.stream(Status.values()) .map(s -> s.getVal().substring(0,1).toUpperCase() + s.getVal().substring(1)) .map(c -> c.replace("_", " ")) .forEach(System.out::println); enum Status { ON("available"), OFF("offline"), BUSY("brb"), CALL("in_a_meeting"), DND("do_not_disturb"); final String val; Status(String s){ this.val = s; } String getVal(){ return val; } }

superb you are

Optional blew my mind

1:30 surprised that you didn't touch on .removeIf() method that is present on all Collection subclasses. It's much less cumbersome than using Iterators and basically a one-liner. Functional trumps imperative style.

@Jazzon234

Жыл бұрын

He mentioned .removeIf() on 3:08 but yeah it was quite short explanation and can easily be overseen.

A very useful video! Can you make one with common mistakes in Spring boot?

@finelooksfashion2732

Жыл бұрын

Literally it's the video before this one..

👇👇🙏🙏🙋‍♂️🙋‍♂️👇👇 Need clear video on how to store date and time seperately into Database table columns For example: patient take appointment for doctor on particular day and time and also update them Can you make a spring boot angular app explaining this And also how to store date and time seperately using rest API

Very help full video, your explanation very easy to learn n understanding. Sir amigoscode you mostly use intelji idea but now which editor is this? this is nice because we can see all method in the class very easily. please let me if every person know about that thanks

@xiaotao9319

Жыл бұрын

still intellij idea,but use [structure] window instead of default [project] window,u can find it on the top of ur intellij idea menu,choose Views -> tool window -> structure

@alexisantonindioulo4225

Жыл бұрын

you can also use Vscode

I start watching Nelson's videos after I smash the likevbutton first😆.

Awesome

Interesting that Java does not let you get a reference to the iterator in a for loop that internally uses an iterator.

awesome

Huge bait that you have a switch statement and the approach is "don't forget to make the syntax the same" rather than bleach your code

My grandfather used to wear that type of cap😅😅❤❤…. Love from kashmir❤❤❤❤

great video!... but i wouldnt really agree with the ternery example return age >= 18 ? "Adult" : "Child" -> it is a very short way of writing the right logic but just isnt simple even if you are familiar with this expression i prefer the "if else" variant its easier to read

@alexisantonindioulo4225

Жыл бұрын

write less and do more

@eskos8031

Жыл бұрын

@@alexisantonindioulo4225 and therefore be more cryptic ... If you are writing the code for machines yes... But usually human beings will read the code

BTW, new UI's default dark theme is different only on MacOS, Windows and Linux have the same color scheme. Unsure why.

@Apopjak

Жыл бұрын

my intelliJnew UI is much darker tho. Windows 11

@joaoruss0

Жыл бұрын

I think I know why, "Edit color scheme -> Dracula Contrast"

what is your intelliJ theme in this video?

"Don't return null, it's bad" JavaScript: Invent undefined

Kareem Ramadaan. Thanks bro

How can I communicate with you brother directly thanks

good to know that I don't do these mistakes.

The thumbnail def looks like something you'd expect from Java devs 😂

15:10🤨🤔🥴😁

my company started migrating all java code to kotlin, is that a great decision?

@stalker200368

Жыл бұрын

Yes, kotlin is java on steroids

@glaze4629

Жыл бұрын

Kotlin and Java are almost 100% interoperable, aside from a kotlin module for some libraries to work with it, you'll enjoy it a lot

وعليكم السلام

Bro is it possible to build a website using Java .

@alienwarex51i3

Жыл бұрын

Yes

@17_hariprasath.j41

Жыл бұрын

@@alienwarex51i3 how

@17_hariprasath.j41

Жыл бұрын

@@deadw1nter679 ohh okie thank you

@alienwarex51i3

Жыл бұрын

@@17_hariprasath.j41 Spring Boot, JPS.. Apache Tomcat. Lots of ways

@17_hariprasath.j41

Жыл бұрын

@@alienwarex51i3 okie

how can i change my inntellij build loading animation with different color. I saw that yours is like rainbow🌈.

@xiaotao9319

Жыл бұрын

plugin:nyan progress bar

Amigo are you cold, whats with a cap on ?

My dear ahi, please, dont forget about اَلسَّلَامُ عَلَيْكُمُ‏‎ 🤗❤

is that ok to state in our portifolio that we used chat gpt to refactor the code?

I wish some KZreadr to spring/Java like Phillip lackner on Android, cuz he teach something that is reaaaally problems, not this simples thinks

isnt arraylist heterogenous?

@alexisantonindioulo4225

Жыл бұрын

No, if you define a type all information in the ArrayList must be the same type

1. in the first example you don't even have to use any explicit loop, just use .filter(), it's thread-safe as well 2. doesn't really someone use generics? is it java 4 or what? 3. I second that, string pool and equality are literally the basics of that language, but still a lot of people doesn't understand it 4. intellij screams "if statement can be simplified", I'd rather give an piece of advice: "listen to your linter!" 5. the ternary's cool :) 6. when it comes to static fields, I'd rather pay attention to not allocate any particular amount of memory to them since they won't be garbage-collected 7. the proper use of switch statements are good, but the switch expressions are better :) 8. agree 9. generally I recommend to get familiar with the jcmd tool, you can check memory dumps thanks to it and many many more 10. optional is a good step forward, but vavr option is even better

@tofahub

Жыл бұрын

This was helpful. I knew most of what he covered but your points are a step further. Did you find this in the "Effective Java" book?

I think the advice about using List instead ArrayList does not apply when working with local variables, by doing so you limit yourself to use only interface that List provide (without casting). Generally your device is good but the way you change the code is is a bad practice :|

@Jazzon234

Жыл бұрын

It depends on the implementation you are using. Speaking of List and ArrayList, there is no reason to use ArrayList because it doesn't really provide any additional functionality that you would need to use. If the specific implementation provides additional functionality, then yes you are right :)

Number 1: Develop anything in Java

👍👍

where is the " assalamou allaykoum amigoscode " ?

@cheikhtidianediouf5968

Жыл бұрын

I finally heard it at the end of the first part ❤

1st mistake: started a Project in Java xP

I honestly dislike new ui. It became too minimalistic, less functional and comperhensive, now every button only has icon instead of icon + name, so you cant say what is what without clicking on it, the color is also more blue, so it hurts my eyes

@Mikenight120

Жыл бұрын

I really love the new UI, you can change the theme of the editor too just in case. I never clicked on things and usually have everything at the reach of keyboard shortcuts so its very nice to remove the clutter in my opinion.

Switch to New UI pls. Classic UI sux.

Judging by the cover, one gets the impression that Java is programmed by people with Down syndrome and cerebral palsy at the same time

@manilladrift

Жыл бұрын

LMAO so true 😂😂

java or jewa

It's a joke with switches? Why don't just use "->" syntax?

@amigoscode

Жыл бұрын

Not everyone using latest version of Java

@V4dk4n

Жыл бұрын

Many projects are java 8.

@alexisantonindioulo4225

Жыл бұрын

@@amigoscode yes i'am agree with this almost people dont know the last version of java, so in the demo he used the basic version to explain how to use Switch case correctly.

Bro, if you’re having to explain to someone how .equals work, you probably shouldn’t be telling about string optimization on memory poll

8:17 I beg to differ. That's less readable, more cryptic. Especially for someone who is new to coding. I like your previous approach better, just remove the else condition.

The topics you talk about are interesting and you never fail to make me click, but i can never finish your videos because you are way way too slow, you always lose me halfway through. Please speed it up a little more

Who tf write this bad code

@Jazzon234

Жыл бұрын

Beginners?

@hiro6164

Жыл бұрын

your mom

@asennikolaev8106

Жыл бұрын

trainees

@deadw1nter679

Жыл бұрын

n00bz