You know how I am certain this is the best Java channel? I have no interviews to crack, I have no exams to clear and I'm still here learning because it just is explained in such an interesting, problem-solution kinda way. Brilliant work, John!
My coding exam is in just about a month - and I would like to thank you, John! You have helped me so much. If I pass, thats because of you. Love your channel! Greetings from germany. :)
i just started my internship for the summer and the code they have us working with has a ton of optionals, which was something i had never heard of. You’re videos are truly always a highlight to my day and explain it so neatly and concisely, not to mention the timing! please keep doing what you do
I just started watching your channel and I love your calm and reassuring way of explaining complex coding aspects! It motivated me to work a little harder on my own projects, unlike the often condescending explainations of the teachers at my university. Thanks John!
Dude, I can say for sure that your way of explaining is the best I've seen on TH-cam ever. That's considering that I'm not a native speaker. Thank you a lot.
Null safety is one of the reasons I fell in love with Kotlin. It's caught me out so many times and helped me to think about where NPEs might be found even when working in other languages.
THANK YOU SO MUCH for actually explaining when are where optionals are actually useful as opposed to using a return annotated with "@Nullable". I am lucky to have understood this topic before watching your video, but before i got to that point i was *severely struggling* to get behind why i would use Optional instead of null in the first place. That is due to many tutorials on optionals just leaving things at "it's a container where a value may or may not be present" but not going as far as you did. I'm absolutely certain this video of yours will help tons of people!
@@pauldhartley I point out functionality because you cannot much with a null value, other than check it and pass it. Optionals on the other hand, are integrated into javas core functionality. You can do tons of things with them just with what java provides. That doesn't even take into account what you or others may code for it
It's very difficult to find such well explained, well paced and easy to understand coding tutorials on youtube, thanks and congrats for having such good content.
I've a exam on Java tomorrow and I've to say your videos on Java are probably the best on TH-cam. Will be binge watching the your entire Java playlist tonight.
love all of your content , it is clear precise and easy to consume i was thinking that it was really really tough but now i am very much comfortable with optionals
Can't resist writing a review, I am preparing for a job as a developer and chose Java as my technology, I have been learning since 4 months now, I was completely devastated and lost few days back as I am not getting any calls for the interviews, luckily discovered your channel and since then I have been going through all the concepts again from your videos, it's just making me so much more confident and stronger, your energy is just pure GOLD! All the topics have been explained crisply. Hope I'll soon land a good offer! Lots of love from India! ❤❤❤❤
Late Update: I am thrilled to announce that one month ago, I joined as a Java Developer in one of the best companies out there. Everything is perfect; my new job fulfills everything I have been looking for, and it feels like a dream 😍. Many thanks to John for his positive energy, knowledge, down-to-earth attitude, and all the help during my journey. I owe this to you John. Thanks to God and everyone for believing in me.
Hi John, I had an interview for SDE 3 at Walmart today, and I literally was able to answer everything along with proper Implementation, knocked it out of the park! Your tutorials are very brain-friendly, which is rarity nowadays :)
What an excellent video! I have studied Java but not worked with it and now I try to polish my knowledge to get a job in Java. I want to thank you for your easy to understand and amazing videos that take up very important and interesting topics. You're an amazing teacher and you get excited to learn more to look at your videos :)
This is an example of a monad, in case anyone here has heard of monads but doesn't know what they are useful for yet. They generally provide a "Wrapper type" that you can use to chain operations safely on, without having to do intermediate work between every function/method.
Hi John !! Your Java tutorials are compendious , please post videos specific to java development like building REST API , Spring Data JPA , Hibernate , Spring MVC etc.. That would be of a great help. Thank You !!
Nice solution for dealing with null exceptions. So much cleaner than use ifs to check the return value. Hopefully some day java implements de null safe operator like groovy or kotlin. Great video John!
my god, you are the best. i am from brazil and i am learning a lot with you. i love java and i found your channel last month, i am watching all your videos, your english and your explanation is so easy to understand.. thank you 😁😁
Love your videos! Always looking if you made a video on the java subject I am looking for first before I watch a video of somebody else. Do a Tutorial about Streams please!
you just compiled all the facts about optional, thanks. can you also make a video on streams and lambdas and collections using them together to build business grade logical error-proof solutions..
The way you explain things, which is really amazing , really short and exact. Can you make a video with Java Stream API? Please. Thanks a lot for sharing great way to learn and grasp things.
I always check out your videos cause it’s very easy to understand even the difficult concepts because of easy to understand explanations. I would love to buy the keyboard that you are using , which one is that :) Thanks in advance .
This is the gold standard of coding tutorials, thanks for such well-structured info
Seriously... Pure GOLD!
You know how I am certain this is the best Java channel? I have no interviews to crack, I have no exams to clear and I'm still here learning because it just is explained in such an interesting, problem-solution kinda way.
Brilliant work, John!
Agreed
Yes, I second that. This is the best Java channel. :)
My coding exam is in just about a month - and I would like to thank you, John! You have helped me so much. If I pass, thats because of you. Love your channel! Greetings from germany. :)
Update: I passed. 😍💪🏻
Congrats!!
Great to hear! Congrats!
@@nikamz6077 Congrats!
@@nikamz6077gut gemacht!
Love the cat example and box metaphor! :) 4:45
i just started my internship for the summer and the code they have us working with has a ton of optionals, which was something i had never heard of. You’re videos are truly always a highlight to my day and explain it so neatly and concisely, not to mention the timing! please keep doing what you do
I just started watching your channel and I love your calm and reassuring way of explaining complex coding aspects! It motivated me to work a little harder on my own projects, unlike the often condescending explainations of the teachers at my university. Thanks John!
Dude, I can say for sure that your way of explaining is the best I've seen on TH-cam ever. That's considering that I'm not a native speaker. Thank you a lot.
Great job, John. Can you please cover logging and best practices for it?
Null safety is one of the reasons I fell in love with Kotlin. It's caught me out so many times and helped me to think about where NPEs might be found even when working in other languages.
I don't usually comment on any youtube videos. But here John, You are doing an excellent job describing topics in a simpler manner. Thank You.
after some years i still get myself drinking coffee and watching your videos, awesome content
THANK YOU SO MUCH for actually explaining when are where optionals are actually useful as opposed to using a return annotated with "@Nullable". I am lucky to have understood this topic before watching your video, but before i got to that point i was *severely struggling* to get behind why i would use Optional instead of null in the first place. That is due to many tutorials on optionals just leaving things at "it's a container where a value may or may not be present" but not going as far as you did. I'm absolutely certain this video of yours will help tons of people!
I must confess to still being confused at the usefulness of optionals, though the video explains admirably some of the characteristics.
@@pauldhartley cleaner and more functional code. Try working with streams for example. You cannot unlock the full power of streams using null checks
@@pauldhartley I point out functionality because you cannot much with a null value, other than check it and pass it. Optionals on the other hand, are integrated into javas core functionality. You can do tons of things with them just with what java provides. That doesn't even take into account what you or others may code for it
It's very difficult to find such well explained, well paced and easy to understand coding tutorials on youtube, thanks and congrats for having such good content.
I've a exam on Java tomorrow and I've to say your videos on Java are probably the best on TH-cam. Will be binge watching the your entire Java playlist tonight.
love all of your content , it is clear precise and easy to consume i was thinking that it was really really tough but now i am very much comfortable with optionals
Best teacher so far. Greetings from Morocco 🇲🇦
Perfect and standard video about the Optional.
Optionals demystified with your video. Thanks a lot for this precise explanation
Best video i ever saw on Optional.🎉🎉
The best possible explanation of Optional . You ve earned a subs and keep up.
I love your channel for the calm and precise manner you describe things with - and also the nerdy references ahah
Thank you for explaining the concept
Absolutely brilliant teaching style.
It would have taken me hours to look for and understand this information by myself. Thanks John.
Thanks for this class, Schrodinger!
4:35
Can't resist writing a review, I am preparing for a job as a developer and chose Java as my technology, I have been learning since 4 months now, I was completely devastated and lost few days back as I am not getting any calls for the interviews, luckily discovered your channel and since then I have been going through all the concepts again from your videos, it's just making me so much more confident and stronger, your energy is just pure GOLD!
All the topics have been explained crisply.
Hope I'll soon land a good offer!
Lots of love from India!
❤❤❤❤
Late Update: I am thrilled to announce that one month ago, I joined as a Java Developer in one of the best companies out there. Everything is perfect; my new job fulfills everything I have been looking for, and it feels like a dream 😍. Many thanks to John for his positive energy, knowledge, down-to-earth attitude, and all the help during my journey. I owe this to you John.
Thanks to God and everyone for believing in me.
So good..guys, just keep coming back to John's channel. He explains everything with the greatest of ease.
This is pure gold, thank you so much!
Always wondered what the true benefit of optionals vs null checks is. This really cleared things up for me!
This channel brings me so much joy, and taught me so much. Thanks!
Didn't even know what optionals were until now. Thanks!
this is so amazing
as backend engineer, I 100% agree
thanks a lot
Hi John, I had an interview for SDE 3 at Walmart today, and I literally was able to answer everything along with proper Implementation, knocked it out of the park! Your tutorials are very brain-friendly, which is rarity nowadays :)
Awesome, thanks for sharing! Hope you get a great offer!
did you get the offer bro?
rip @pastasempa
@@CodingWithJohnl got an amazing offer and bought a nice cruiser motorcycle with that paycheck!!
Hey that's amazing, congratulations!!
What an excellent video! I have studied Java but not worked with it and now I try to polish my knowledge to get a job in Java. I want to thank you for your easy to understand and amazing videos that take up very important and interesting topics. You're an amazing teacher and you get excited to learn more to look at your videos :)
Love that desk setup, could you do a video about your desk setup? And maybe other stuff as well, such as your favorite IDE, text editors etc.
Hi John thank u for ur efforts , can u please do a tutoriel about the spring and spring boot it will be amazing by u
You are the BEST on these streets.
This was awesome, you made me chuckle. Made it really easy to follow, thank you!
You are just AMAZING! Please never stop! 💫
wish I had you the sophomore year of college. Great work!
Awesome! The society demands explaining all java features basing on this cute cat
This is an example of a monad, in case anyone here has heard of monads but doesn't know what they are useful for yet. They generally provide a "Wrapper type" that you can use to chain operations safely on, without having to do intermediate work between every function/method.
Very good explanation and I loved the cat and the box. Thanks
thanks for the clear explanation
Didn't know about the map-method. Thanks :)
Thank you, this video has helped me immensely.
Hi John !! Your Java tutorials are compendious , please post videos specific to java development like building REST API , Spring Data JPA , Hibernate , Spring MVC etc.. That would be of a great help. Thank You !!
I do recognize the way you speak so clearly.
Bro life saver. Your videos are amazing.
this is something new definitely, IL look tomorrow into video and check some exercises. thanks John
As a kinesthetic learner I would like to thank you for bringing the actual cat for this videos which was Optional
Amazing tutorial. Very clear.
Excellent explanation, calmly, deliberately and well mastered the subject, thanks for sharing your knowledge, greetings from Peru 🇵🇪
epic explanation with the cat in the box it was so funny!
Great explanation John
Cats definitely love playing with/in Optionals
Optionals are extremely useful and explicitly and semantically tell the caller to deal with nulls 😊
please keep blessing us with such non trivial concepts. much love !!
Nice solution for dealing with null exceptions. So much cleaner than use ifs to check the return value. Hopefully some day java implements de null safe operator like groovy or kotlin. Great video John!
ah, a classic
"we do not know if the cat is null or not null until we open the box, so until then, it is simultaneously null and not null"
my god, you are the best. i am from brazil and i am learning a lot with you. i love java and i found your channel last month, i am watching all your videos, your english and your explanation is so easy to understand.. thank you 😁😁
Love your videos! Always looking if you made a video on the java subject I am looking for first before I watch a video of somebody else.
Do a Tutorial about Streams please!
your videos are really useful and easy to understand.. and you are explaining lots of interview subjects.
Precious content, thank you! Greetings from Brazil 😊
Your explanation are really simple, when could I expect spring boot
The explanation with your cat was really great. Thanks for the good tutorial!
Hello mr jhon .
Thanks for your teaching video 🎉🎉🎉
Before this I used to think optional is a mysterious box in Java. Thanks for the video
Impressively explained.
Coding with John deserves more attention.
Feel free to share! And thanks for watching!
loved that subtle Schrodinger's cat reference
you should really teach design patterns. one of the best tutor in the universe.
Have been waiting for this for a long time, thank you!
A 6'5'' John saying "OR ELSE" to the face is quite a threat 😀 Wonderful and interesting tutorial as always. You're the best John!
I definitely learned something! Thanks
Hey John, first off, fantastic Video and well explained. Second, would you be able to do a video on the Java Garbage Collector and ways to utilize it?
I am So grateful for your videos!
Cat be like : things i need to comply with for some food..
thanks for the work, this was excellent.
Awesome explanation!
Thanks for sharing your knowledge! I enjoy watching your tutorials!
Excellent video! Very well explained. It's one thing to know something, totally different thing to be able to explain it well. Thanks!
Schrodinger's Optional Cat Box. Great tutorial
The map 😲, thanks for the video
great explaination sir. really liked ur videos and learned a lot. Thanks sir
Your channel is my go to for any Java related topic. Thank you!
Could you please consider making some design patterns tutorials? 🙏🏻
You are superb. Do you have any tutorials on using Mockito?
Thanks man, i needed that.
A cat in a box. It’s the perfect combo👌 Thank you for this great tutorial!
Thanks! Direct to the point, it worth all 16 minutes. If I could give 100 likes I will ask why I can't give 1,000
Great content thank you. Just for Optional the right use case was the use in the public method rather than the private method.
Yep, generally for a private method it's not really a big deal.
you just compiled all the facts about optional, thanks.
can you also make a video on streams and lambdas and collections
using them together to build business grade logical error-proof solutions..
The way you explain things, which is really amazing , really short and exact.
Can you make a video with Java Stream API? Please. Thanks a lot for sharing great way to learn and grasp things.
Suggestion for video: Design patterns
Another very well explained video ...
I always check out your videos cause it’s very easy to understand even the difficult concepts because of easy to understand explanations.
I would love to buy the keyboard that you are using , which one is that :)
Thanks in advance .
You remind me of those super cool, good and cute uni teachers everybody loves. Your videos are so fresh and spot on. I really like them, so thanks!!!!
Best Java Tutor!!
Great tutorial , thank you
Awesome tutorial!