New Java Version 22 - The 3 Best New Features You'll ACTUALLY Use

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Java version 22 is out now! Here are 3 new features that you can absolutely make use of as a beginner or advanced Java programmer.
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Java 22 was release just a few weeks ago. Is it worth the upgrade? We'll talk about 3 new features in Java 22 that you can actually put into action in your programs TODAY.
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Опубликовано:

24 май 2024

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Комментарии : 287

@MelHaynesJr 26 дней назад

Java is older than many people using it, and it's amazing we are just now getting this String feature.

@adiveler 26 дней назад

Yeah! C#, Python, and JS had this for ages!

@JorgetePanete 26 дней назад

Not yet, they'll be iterating on it and is now removed.

@boss50726 25 дней назад

I think java is now realizing that it will loose it's charm for new gen

@allwoundup3574 18 дней назад

Because java is trash and was developed by a kiddie diddler

@noJobProgrammer 16 дней назад

@@adiveler C# is just a copy of Java, there is nothing special in it

@terrificfrogg8377 26 дней назад

The string template is amazing but having to begin with STR to make it work is just so Java

@CodingWithJohn 26 дней назад

I think it's technically needed for backward compatibility, since without it if some string literal happens to contain \{something}, it would break when they upgrade the Java version.

@PimPumSObaka 25 дней назад

+++ This whole feature literally screams JAVA lol

@sstrenn 25 дней назад

Do you know why they couldn’t just put an f in front of the string, like python, to indicate a formatted string to the compiler?

@DinMamma002 23 дня назад

@@CodingWithJohn How is it needed for backward compatibility? "\{" is not allowed by the compiler afaik.

@havlli7544 23 дня назад

@@CodingWithJohn It is a design decision as well, from what I could understand from their latest talks about these new features the reason is to give developers the ability to create their custom template processors that can have additional logic, they gave the example of creating a custom SQL template processor that would have sanitizing included in the template processor logic itself so you could just call SQL."query with parameters" in the database layer and not to worry about sanitizing because that will be centralized in the template processor itself. You could use it to adhere to formatting standards for the queries and greatly reduce boilerplate code. There are more use cases for sure but I cant come up with any from the top of my head :D

@Sunnnix 24 дня назад

For the third feature, I always used String.format because it's easier to read

@dirkniblickable 17 дней назад

“%s is even easier”.formatted(“This”);

@sanin3213 26 дней назад

Return of the GOAT

@MrXperx 26 дней назад

I came from a JS background to a Java project and the lack of string templating drove me nuts. I started to use String.format which isn't that bad.

@YouHaveTrouble 25 дней назад

in java 17 and up you can do "Some random string with %s format".formatted("special"); which is more convenient imo

@MrXperx 24 дня назад

@@YouHaveTrouble thanks. I'll try it.

@Kiyuja 25 дней назад

String templates sounds good but it needs a little work I feel. This is the same concept as string interpolation in C# and its a little more friendly, you just add a $ in front of a string and then use the same braces as with the preview here like: $"part1 {insert} part2". Its quick and easy to use. The "_" is also a thing called disposables I believe and it can be really useful. I am happy to see Java catching up a little and hopefully they work on asynchronous execution in the future.

@nakarukatoshi День назад

The thing is that they decide to go with processors because programmers can create their custom ones, like custom HTML, YAML, JSON, SQL, ... processors that will sanitaze the variables I think some frameworks like Hibernate will implement different SQL sanitizer processors, and Jackson will do JSON and YAML processors for example

@Okmeis 26 дней назад

Thank you for keeping us up to date.

@boss50726 26 дней назад

Please make more videos John

@rakshanch2126 26 дней назад

best java youtuber

@MusabYK 26 дней назад

Agreed

@user-io1uc3wy7d 24 дня назад

Amazing i am learning dsa using Java and love to work on it further as well.

@antonyrichard369 26 дней назад

Not to compare as I love Java too .. but the string template feature is something .Net has implemented a few years back and Unix operating system has it way way long back .. I feel like Java is more moving towards like a scripting language like python or Java script and more of functional programming ofcourse

@paulthomas1052 24 дня назад

Thanks for the great intro to Java 22. Look forward to more !

@rubens_cube 26 дней назад

Hey John, another great video, thank you! I was wondering if you know something about Java Serialization? It is a topic I would love to see in a video, because it is very useful, but it feels like magic to me. I would love to see a good explanation of it so I know how to use it properly!

@nayankumar9113 26 дней назад

welcome back champion. thank for such a great tutorials.

@MrAikien 23 дня назад

Thanks for the update 🙏. Really appreciate it 👌👍

@VuLinhAssassin 25 дней назад

Hi Jon, your video was amazing. Btw, is there any remote position in your company?

@Mig440 26 дней назад

Unfortunately, the string templates feature has been removed for now from std. Lib since they want iterate on the design at bit further before releasing it to the public. Just good to be aware of.

@terrycrews1584 26 дней назад

Dang, thought we will finally get rid of that pain in the ass of concatenation! 😂

@davidc_ac9377 17 дней назад

It has always been experimental in v21 and v22. It was not removed, because it was never standard.

@Mig440 17 дней назад

@@davidc_ac9377 true, but people might still think they can experiment with it on their own in jdk 23 and that will currently be impossible 😊

@imohanthony 17 дней назад

This video presentation was so cool am considering picking up java again.

@ilyriadjaajdairyli6352 24 дня назад

Thank you its very clear explained

@paulmanuilenko7894 22 дня назад

Thanks a lot for the overview!

@ricardoid 23 дня назад

Great video! every Java improvement Scala has it many yeas before 😮

@raymondorenda7385 26 дней назад

Good tutorial there though I rather they ought to have used $ sign instead of \ for that String variable combination. A convention in number of languages. Besides, adding \ in xml with its cousin / already in abundance will bring more confusion.

@nambipugal3329 24 дня назад

Hi John, Eagerly waiting for more videos especially on Spring Security 🙃

@theroyaltygamer8436 24 дня назад

Hey john love your content please make more videos

@i_say_uhh 25 дней назад

String template looks so niceee

@vibingowsic2338 26 дней назад

Miss your tutorial John ❤❤

@leogcavalli 26 дней назад

Great content, as always

@dirkniblickable 21 день назад

In lieu of chapter markers: * 1:43 - Unnamed variables * 7:03 - Compile and execute multi-file Java programs from command line * 9:14 - String templating (preview only)

@xtunasil0 4 дня назад

Java is finally catching up on basics features it was missing. About time!

@baay81 25 дней назад

thanks for sharing!

@tanujabhatnagar 4 дня назад

Could you please explain different types of design patterns used in java as well? and when to use which one?

@nithinvijay19 6 дней назад

Worthful content from you as always!

@mayurlaniya5049 4 дня назад

Awesome presentation!

@danhoelzel5339 19 дней назад

string templates was something I was wondering if Java had about 8 months ago when I started working on an android app using java. Glad it is finally a feature.

@simulbista8846 26 дней назад

Great to have you back.

@flaviuvanca9289 25 дней назад

Great video John. The new String concatenation is a game changer. The blank _ is a bit silly, but I welcome it, might be useful occasionally.

@alandoe6622 25 дней назад

If you come from python, you know it's useful.

@flaviuvanca9289 25 дней назад

@alandoe6622, I'm planning to learn Python in the future so it's great to gain that extra knowledge.

@FahadAyaz 24 дня назад

It's nice that Java devs are able to use these now. I feel blessed that we've not had to put up with these (and have a lot more loveliness) in Kotlin for years now. Going back to Java definitely feels like a step backwards

@tanujabhatnagar 4 дня назад

Could you please create a video explaining double locks, volatile and synchronized keyword? It would be really helpful 🙏🏻

@avalagum7957 25 дней назад

If you could talk about structured concurrency and stream gatherer, that's really great.

@VANTYCSolutions 24 дня назад

Awesome video thank you.

@pablocaiza. 25 дней назад

string template is awesome, is similar to template stirng in javscript :D

@zachariahtatman7381 21 день назад

wow java finally coming out with basic features that have existed in other langiuages for years. i might actuially enjoy java in 5 years.

@amilasilva7 25 дней назад

Hay love your videos on youtube. Supper easy to understand.

@omitobisam 24 дня назад

Unnamed variable seem to be idea of matching a pattern. If it does not match any pattern, then you can use an underscore. Example in F#.

@CGDW2 25 дней назад

Unnamed variables I will use occasionally, but String templates are really nice. I do sometimes use String.format() or printf() rather than concatenation, but they still feel kinda clunky in their syntax.

@CodingWithJohn 25 дней назад

Looks like it's unfortunately being removed even as a preview feature in Java 23, but hopefully to return in an even better format in a future release.

@paramdholakiya8857 25 дней назад

Using STR. String templates for Servlets. That's it. Thank you ORACLE gods. Writing Html in Java Servlet file has now became more easier

@gsilva877 22 дня назад

😂😂

@younesdamous 26 дней назад

I watched a lot of your videos and I benefited a lot from you in Java... I am from Algeria... Thank you and I hope we meet one day

@lootster 21 день назад

00:01 Java 22 introduces new features for developers 01:46 Java 22 introduces unnamed variables 03:25 Using unnamed variables in Java 05:00 Java 22 introduces unnamed variables for unused exceptions and Lambda functions. 06:46 Java 22 makes running multiple file Java programs from the command line easier. 08:20 Java 22 brings multitfile program running and string templating as key features. 10:05 Java 22 allows string templating for cleaner concatenation 11:51 String templates simplify multi-line string manipulation

@kalvakolusubhash8832 2 дня назад

Please make a video on how to load all the project classes during runtime.

@fizzcochito 23 дня назад

Looking forward to using this once we upgrade from Java 8 in 23 years

@PimPumSObaka 25 дней назад

Those features are amazing, but... the '_' underscore variable discarding was in C# since 7.0 and they should definitely add more like from there :) The syntax sugar in C# makes it much much much better to use, so when java introduces something like this it interests me again in making things in Java

@sqlexp 24 дня назад

He missed the points of it, though. First, it is used to silence any "unused variable" warning (if Java has such a thing). Second, it saves the programmer from the need to come up with different distinct names for multiple unreferenced variables in the same scope.

@dembro27 20 дней назад

They implemented my unreasonably favorite JavaScript feature, template literals, into Java. Finally!!! String.format is pretty good, though.

@SweetDemon11 6 дней назад

John could you talk about Java Modules please, i appreciate your content

@mohamedsameh3678 23 дня назад

I'm impressed by your knowledge of Java versions! Since Java 9 there have been many new features. Would it be possible to create a concise overview of the key features introduced in Java 9 through 22? This would be a valuable resource for developers, and I believe your ability to explain complex topics makes you well-suited for this task.

@amilasilva7 25 дней назад

Can you make a video about : How quickly adapt to new Java features from java 8 to 11/17/21/22. (what new features we can use over legacy features.)

@user-xe5pk5pn2u 26 дней назад

Keep uploading these awesome videos. I NEED IT.

@harshitkrvishwakarma3602 23 дня назад

Java is becoming javascript but with types. I love it.

@ukaszkiepas57 23 дня назад

Thanks John! :)

@noodleslee4871 9 дней назад

String template is lit!

@adamrigely3607 21 день назад

Wait, you create these awesome videos AND play TBOI? Now I appreciate you even more!

@David-rz4vc 21 день назад

C# has the underscore. it's useful in a try catch when u don't want to do anything with the exception

@NadChel1 21 день назад

String templating is awesome. I was hoping for something like this for a long time. Though I wonder why they didn't go with backticks like JS with its string interpolation. STR is less appealing to my eye

@LucaCattaneo-xz5mu 24 дня назад

hey John! i know this might be a strange request but i was wondering, could you please do a tutorial on RMI java server and RMI java client? i know, it's an outdated function but i went throw many tutorial and forum to find good explained code, but none of them was accurate, expetially when your code create thousand of error even in the compiling phase. if you decide to do it, could you please also cover all the commn errors and mistakes that could generate? thank you.

@theminingpro 23 дня назад

That in string variable thing is a game changer for sure

@reyhanau50 26 дней назад

Hi John, will you start to teach us about Spring Boot material someday?

@iparadoxg 24 дня назад

Welcome Back John! ❤

@withgrowinginsanity198 24 дня назад

11:49 what about the existing feature "my name is %s".formatted(name); no STR and very confusing looking (especially inside HTML) "\" needed ...

@deepakyadav-ny2cj 21 день назад

Please increase the frequency of you appearing with new video, we really wait eagerly.

@74LS_NE555 23 дня назад

how did you get that vanity url for the video ?

@fifofuko1864 26 дней назад

Maybe you might want to use unnamed references for constructor functions? Idk if this has any use.

@sadiulhakim7814 19 дней назад

I saw one issue in StringBuilder today. I had to build string inside a while loop. Inside that loop i was creating a StringBuilder instance and creating the string. Later i wanted to make the StringBuilder outside the loop. But i was appending something in the string builder inside the loop. After appending and generating string i had to clean up the string builder for next iteration. I could not clean the string builder. I tried setLength(0), delete method. But the bytes inside value array still exists.

@frederik_hd 26 дней назад

unnamed variables as well as multi file compiling + executing (although I've never needed something like that and never will) i like a lot. but I don't like string templating with STR. at the beginning of the strings maybe I would like it if you can leave out the STR.

@adiveler 26 дней назад

It still better than: "My name is " + name + "and my age is " + age; And than: "My name is %s and my age is %d", name, age; Also, other languages do something similar too, in C# you need to put $ before the quotes, and in Python, f.

@CodingWithJohn 26 дней назад

I assume the reasoning behind needing STR is backwards compatibility. If some existing string happens to use \{} in the string literal it would break with this change.

@ZachariBarnes 26 дней назад

Grats on the sponsor!

@denver3703 11 дней назад

Hello John, can you cover RegEx in java

@fernandosantiagovillegas6556 21 день назад

The first feature is the same or similar as python, so i think knowing how underscore works in java would help for understanding how it works un java. The string template also seems similar as the fstrings in python,

@johnmckown1267 23 дня назад

The _ and string interpolation (f strings) are in Python too.

@tigerstyping 22 дня назад

Great video, but I'd make sure to caution against using template strings for HTML! If you're processing user input, you should always sanitize the values before putting them in your HTML, preferably using a trusted library.

@anne_the_dev 26 дней назад

Hi John, I'm Anne and I have been programming for almost 5 months and I'm about to learn data structures, but I'm considering switching to js since it's really hard to do so in Java + I already know HTML and CSS so is it worth the switch? And I also get a bit overwhelmed after people talking about complex stuff, so any suggestion to avoiding that? BTW thanks for the generics tutorial it was awesome ❤ Btw I use vs code so sorry, I can't switch to jet brains.... Yet

@CodingWithJohn 26 дней назад

Ha no worries! Well I don't know if javascript is heavily used for data structures work, particularly with HTML/CSS. Together those are mostly for the front ends of websites, and not so much for data structure work behind the scenes. Between those I would stay with Java, although there are definitely other options too. The tough part will be the concepts of data structures, and probably not so much the actual language you use to implement them. Just get started with the simplest stuff you can understand, and work from there. Try to go step by step, implementing something very simple and let it sink in, code it yourself and mess around with it, doing a lot of testing. Then take small steps forward, making it more complex as you get more familiar. If you have specific topics that others might be interested in as well, let me know and you might see a video about it!

@anne_the_dev 26 дней назад

@@CodingWithJohn thanks you so much!!! Yeah I have a video idea: maven tutorial

@aravindmuthu5748 26 дней назад

if you know HTML and CSS, the next logical step is to learn JS without which web development is incomplete tbh. It is better to pause your Java for now, because it could get quite confusing from J to JS. Both are drastically different languages (why did they name it JAVAscript tho???) and once you try js, all the object oriented programming gets thrown out of the window, and you'll be needing to learn functional programming, which btw is waayyyyy easier than OOP approach. Once you feel like you're comfortable with it, you can decide whether to switch back, because honestly Java is mainly used in big enterprise companies and JS is used by lean and fast teams. So in conclusion, you either leave out web development and concentrate on Java, it has got its long term benefits or abandon Java(for now) and concentrate on JS which will speed up your programming skills itself and you can land a job quicker...

@ZachariBarnes 26 дней назад

You can do data structure work in JavaScript but JavaScript doesn't have many built in data types for handling those sorts of objects and often you'll need to pull in a npm package or write your own, which will add a lot of complexity to your programs. Stick with Java or another back-end language more suited to data structure manipulation

@jaybee2530 26 дней назад

A good possible alternative for Java would be C#. My first language was Java, and it can be a bit daunting to learn at first, but i'm very happy i stuck with it. It gives me a greater understanding of programming concepts than if i would have started to learn with Python for instance. Either way, whatever language you pick, learn the language thourough. Don't hop from one language to the other only learning a bit about each language, and don't worry about getting overwhelmed either. Programming can be difficult. So, take a breath, make a coffee, and take it one step at a time. Good luck!

@delsix1222 23 дня назад

what's the reason for using String.format() now that string template exists?

@karenlim7841 20 дней назад

Yay, you’re back!

@vanlepthien6768 17 дней назад

Wow - actually useful new features!

@beepbeeblebrox3972 25 дней назад

youre back!

@FonPacific 3 дня назад

While PHP moves towards Java, Java implements features PHP has been having since long time ago. I find it funny yet interesting!

@erfanakhavanrad6597 19 дней назад

I'm really really happy that you are not done with RU-vid! Keep going John.❤

@SebBrosig 3 дня назад

Wow: all that convenience, almost like Perl!

@user-hn1cy5ee5l 20 дней назад

regarding strings template, why just don't use f as a prefix to the string like in python? String message = f"My message is {msg}", isn't it easier? Better implement a wheel rather than look up for other approaches

@gamehacker5692 24 дня назад

Can we get a video on the Java turtle functionality, I know how to use it in python but can’t get the syntax fully in Java

@amitn10 12 дней назад

Please make a video about radix sort🙏🙏

@Toni2Go 25 дней назад

Please do a vid about Structured Concurrency

@balogunoluwatobijohn154 19 дней назад

Please can you do us the favour of doing a tutorial on random access file. Thank you

@imakhlaqXD 18 дней назад

Java seriously need to work on its syntax make it someting like Kotline. And remove those legacy stuff and old stuff. We really need a java version with breaking changes and whole rework.

@oladipupoibrahim2128 25 дней назад

Wow I love this 😅

@wannacry6586 2 дня назад

Anyone know what setting enables this type of auto completion 2:03

@max96169 18 дней назад

Cool, just like in dart!

@codewithfelix3940 26 дней назад

nice vid

@zshn 3 дня назад

I cannot wait for string templating! Thank the java Gods!

@Morzelius 26 дней назад

I'm pretty sure they wanted to find the most uncomfortable syntax possible to do string templating. Maybe they checked how the popular languages doing that and wanted to create something that worse.

@manoelcamposdev 21 день назад

If it wasn’t due to the possibility to create any custom string processor you want, I would agree. But Oracle looked at other languages and included an awesome feature. For instance, you can create a JSON string processor or a SQL processor that avoids SQL injection. It’s just amazing and sometimes a simple lambda.