This Keyword in Java Tutorial #80

[@alexlorenlee]

If you’re new to programming but want a career in tech, I HIGHLY RECOMMEND applying to one of Springboard’s online coding bootcamps (use code ALEXLEE for $1,000 off): bit.ly/3HX970h

[@sammamrariana5880]

is it still valid

[@iwatchedthevideo7115]

I just went to bed, after watching the lecture video of my babbling uni professor confusing the hell out of us about the this keyword and blasting through 200 incoherent slides. Then this comes up in my recommended! This is so much clearer and I actually understand it now! Thanks! I think Ill just skip my school lectures now and just watch your videoes. Are you planning on doing anything about polymophism and unit testing?

[@tbinyt]

it's a shame that you no longer make Java videos. You explain well and keep it simple. very helpful

[@asmaabdullah9068]

explained a 1.5-hour lecture in 10.5 minutes. Amazing, thank you so much!

[@maxassasin911]

If your professor needed 90 minutes to improperly explain a basic concept.....I feel your pain.

[@endone3661]

I hate teachers who explained alot of useless things that took an hour to explain 10 minutes lesson

[@mikebrown5142]

God is Good! Matthew 7:7 :)

[@lutz]

Dude, I've been trying to get into Java for a long time and made amazing progress with some friend's help but geez, this videos are hella helpful.

[@luka-j-ovanovic]

For anyone who is coming from a Python background, “this” is the same thing as “self”

[@ejm209]

aye im coming from python background

[@glitchlover260]

Thanks now understand self

[@animehub38n2]

C++ here xD

[@crazykalo4301]

i love you

[@coolfred9083]

Ah that makes sense

[@dylanchan3772]

Thank you so much Alex!!!! i've been taking a java course at a community college over the summer as a high school student and I've struggled so much with the quick pace and loads of reading. But your videos have saved me!!!! Instead of reading for hours and comprehending 5% of it, I can watch a video like this one and instantly understand it!! This is so much better than the textbook!

[@hien6451]

for me, a person is not good at English, you speak slowly so I can understand clearly. Thanks so much

[@jacquelinezapatasaavedra1516]

Please make more videos ! Come back !! You are amazing !!

[@amankaushik5833]

This was the best explanation of the "this" keyword. I can't thank you enough...

[@academicresourcesaccountfo9176]

Alex, you are a gem for us beginners! You just put this out in such ways that are easy for us to digest! Thank you so much, man! God bless you!

[@עדןמזור]

Great video! You always do tutotials for EXACTLY what I need to know xD

[@alexlorenlee]

Haha great :)

[@sayangku9275]

i was crying throughout my first year of college man if i knew this channel back then things would probably be easier for me

[@simon_gergely]

These videos are so helpful,. Pages of complicated textbook chapters explained in 10 minutes. Thanks for doing them!

[@nicktendocreep]

bro thank you so much! your vids are a big help Im so happy I can understand this now

[@sree4528]

I need to say you are explain these things in your pretty easy way which is so helpful.

[@miguelluizherrera4529]

I watched my prof cram the discussion of this, static, and methods, and classes in one single lecture and honestly felt like crying. Thank you so much for sharing this!!

[@rayenabadlia5766]

We need a tutorial about " super " key word which is used in inheritance plz 🙏 this was so helpful i clicked the thumbs up button before even watching 😅

[@Christfemme]

Yes, I agree.

[@abdeselamselami4532]

Thanks a lot Alex, for everyone the short-cut of System.out.println() is type sysout + hit buttons ctrl+space.

[@josephnagy2566]

My guy, your videos are more coherent and comprehensible than my IFT210 prof. Keep up the good work, you are literally saving my grade.

[@benvoisey3942]

Oh my god. I’m not gonna get into details but you are literally so much help. I started my GCSEs this year, and you are the reason I took computer science. Thank you so much for the inspiration. Still watching after >1 year. ❤️❤️❤️ Edit: Oh my god why does KZbin hate me. It unsubscribes me from loads of channels. Just realised it happened to this channel. There’s +1 sub for you

[@melvingx]

THIS actually makes so much sense lol thanks for simplifying

[@ThatguyWitjokes]

Very clear explanation. 3 videos later, I've got it. Thanks man

[@milehighgarage]

Great explainer on why the THIS keyword is used in java

[@jessicabautista8687]

I really need this omg thank you so much

[@zj10]

Good explanation. I was a bit confused when I first started learning about this, but it much clearer now. Thanks!

[@kvndotcode]

This really helps me alot more in my ON my online class...thanks for the help man!!

[@selvamariairudayam5197]

Very helpful Alex

[@mrg3921]

Nicely done!

[@hamsal_khaldi7851]

Thanks, you make the life so much easy, bless you

[@suryamgupta4467]

That was an amazing explanation! Thank you so much

[@Snipesaintme]

Thank you so much I really needed that

[@dname1802]

Thank you so much, you're the best!!!

[@youareiamurim]

I love your video alex!! Very helpfull....keep going!!👍😊

[@marclesterdelapena8309]

You're a legend. Thanks for this.

[@russellandrady]

Absolutely amazing.

[@AkashdeepSingh-qq5fw]

6:00 or maybe simply name the parameters same as the attributes like a and b. But an underscore a_ b_.

[@Death2AllGaming]

or use this

[@ogmine9913]

tysm 😭😭😭 i was so confused

[@MinhTran-sl7kc]

Thank you Alex, you made thing very clear. Liked and Subcribed

[@justkleedesigns]

Awesome Video, helped a lot. You can also just Type syso and then hit the buttons

[@user-qo3ih7vj4n]

I learn so much from your videos

[@YW-zm3ds]

so helpful, finally understand this this...

[@nadi6044]

Thank you Alex. you are the best 👌👌👌

[@a99g]

What text editor is this?

[@ibrahimylmaz8378]

thank you man

[@jyrikgauldurson8169]

The 'this' keyword is not there so that you can name local variables the same as class members. It is a reference to the instance of a given constructed object. The naming issue occurs because 'a' and 'b' are shadowed by the parameter names. I suggest that viewers take a deeper look into this for a better fundamental understanding of OOP and the 'this' keyword.

[@edgarwideman737]

Your correct, but these tutorials are for beginners! Unlike useless college professors, this guy explains java in simple language so you can get started, only then is it possible to go in-depth. Almost 50% of students learn more from youtube when getting started in computer science, then from there $$$ school lessons. That's why I skipped college and University altogether and am now a successful android developer.

[@tawsifiqbalshurid5773]

a lot of his videos are like this. They are sort of technically wrong. Which is misguiding people.

[@robert4598]

5:25 This was not very well explained. Why doesn't it work? We tell the program to put our input a value in t.a and it doesn't do it? Shouldn't it be the same, just so that we put it in a specific object?

[@Applestaffman]

why static cannot be used after the keyword this in this case?

[@tahabekmez5072]

I'm a guy but 0:17 the look and tone blew me away!

[@Larichanns]

Please cover oversize arrays! I love your channel

[@jatindhiman2261]

thank you so much sir

[@46Bax]

so the one without the this keywoard, will always refer to the variable given through the method ?

[@Matt-nx6uu]

I'm beginner-intermediate, ya know, acing my exams basically. No clue what this is used for yet, so cheers if this helps me figure it out lol

[@nawfalnjm5699]

thank you

[@justinsanesc.9085]

Thank you for this video :)

[@maryyamsiddiqa3859]

why do we have to declaren the variables globaly? can't we just declare in the parameter list?

[@arischvaranpuvanesvaran8875]

Thank you!!!

[@MrLithuanian91]

Thanks from Lithuania :)

[@only_fair23]

Can someone explain why the static won't work with this? Or in what situations static doesn't work? I understand where to use it but don't know why it doesn't work in more situations.

[@jake_3745]

Nice almost what I was looking for. The only thing that was missing is the useage of this on constructors not just variables

[@joycelillian1815]

I can't help not looking at you when I'm listening to you

[@sabertoothwallaby2937]

why do we use eclipse to write Java on?

[@scottw7895]

What are the benefits and downsides to this method vs using static variables? You wouldn't have to pass static variables, which is considered best practice?

[@londiniburro1931]

thank you dude

[@sarthakjoshi21]

when we use this.a and this.b and remove static bcuse we can't do ith static variable t.a and t.b

[@onpointinsight]

am i the only one who heard him say at 6:30 if whether it's a big spoon or a large spoon? 💀💀 lmao

[@onpointinsight]

useful video though, thanks!

[@jonahosband4534]

Could someone explain why the compiler is confused when in the method he created a new instance of the object then used t.a and t.b? I understand most of this vid but that example is strange because I would assume that the values would be assigned correctly since you are using the instance and dot operator

[@liyasamuel4133]

i swear i would not pass my uni course if it wasn't for you alexxx leeeee

[@megasmit]

can anyone tell me why when i make a new class in netbeans it doesnt create my main method thanks

[@seenathgooding181]

thanks!

[@ahmadmousa6895]

i would recommend this video for my teacher

[@aadityagadhvi4236]

So is it just like the __init__ method in python

[@adityakadam830]

Dude you vids are amazing but in this particular video u shudnt have used the class name "Thisisfun" Love from India❤️

[@counterpointerz-rocketleag2038]

Or just ( String _food , char _size) { }

[@gaycat599]

great video!

[@Sk8erMorris]

the classic "this means this" lol .. great tutorial makes me understand this Reference a lot more than just reading about it

[@caseyj9]

So the bottom soup in the allocation moves first into the Set data and then that puts it also into the Class as a whole? (Arrows would help in the future). Also, is the purpose so that the rest of the class methods have access to the food and size data? (I’m so New I’ve just been writing print within the method taking the parameters so that I can just reuse the names there without issue. Or sending them into another print method directly)

[@mouminali1380]

Haha where was this when I was studying for a test I had today. Btw any plans on doing videos about data structures?

[@Khyrid]

I'm learning java at warp speed because of you.

[@karammohmmad5065]

with arrays?

[@dickhea334342545]

Curious, how did you make the instance of the class (object) without using a constructor in your code?

[@SnS-SpartaN]

*_I read 'this keyboard'_*

[@notyournormaldev1419]

Hey !! Alex loved your video .. but can you tell me the name of the song in the background @Alex Lee

[@herobrinehacks2321]

Cool video, but what does it means when we call a method like this one: fun(this); what 'this' keyword means in this case?

[@rohitasoni4906]

song that plays in the starting??

[@biracialballoon524]

When would you then use this() - keyword?

[@ariton2990]

In case you have multiple constructors, you can call a different constructor with this() keyword.

[@biracialballoon524]

@@ariton2990 I appreciate your comment. Thank you

[@jonsdogg2400]

You never know how many tries and attempts I did to phrase this out for KZbin to understand that I'm referring to this.keyword in coding

[@gericofrancisco2013]

So you just use the "this" keyword whenever you are using a globally declared variable or to lessen the use of objects inside your methods. Thanks for another good upload brother! Keep it up!

[@hayyanmezher4236]

I tried to do what you did without instances because I felt that they are somehow redundant steps. and indeed Java asked for them. what is the reason? I think simply (in theory) we gave our parameters the right type of variable. isn't that enough?

[@ariton2990]

"this" keyword refers to THIS instance, so you cant really use "this" keyword without using instances. When you do "this.a", you are refering to the variable "a" of this instance.

[@michaelcoleman3407]

So basically the “this” keyword doesn’t refer to the values in the parameter?

[@benjamincox9762]

How do you set your settings so that when you create a new java project, it automatically goes into your package explorer? I have to extract my java projects manually and it would be just so much easier and less time consuming if I didn’t have to do that anymore.

[@christianwtf2960]

So do you put the variables up at the top under class so that it's able to be used at any point in the code? So that you don't need to reassign it for every method?

[@ariton2990]

yes. variables outside of any method declaration are global.

[@christianwtf2960]

Ariton Thanks for the reply! Can you make scanners global so you don’t have to send it to each method?

[@ariton2990]

@@christianwtf2960 yes

[@christianwtf2960]

@@ariton2990 Is there a downside to doing that? Because it sounds like its better than creating it in the main and sending it to other methods.

[@ariton2990]

@@christianwtf2960 Cant think of any downsides. The only notable downside I can think of is that every method can have access to the scanner, even if you dont want to.

[@pbetftdi]

Still quite confused. Why even name variables the same name and go through all the confusion of this (other than it will be a few questions on the certification exam) when its so much easier, clearer, and not frustratingly confusing to name the variable different names?

[@lukemalonis8533]

Dayummmm I understood this so fast. You are somehow better than all of the Indian guys on here 😂.

[@paulburger330]

8:30 where the penny dropped for me (Edited) great tutorial btw

[@victorpinasarnault9135]

Liked and subscribed.

[@mzamomahaeng268]

this was a great video 👍 see what I did there.Thank you man

[@4ashutosh]

Thanks but I have a question, why we cannot use "this" in a static method?

[@ariton2990]

Because static methods belong to the class and not to any instances.

[@coleeckerman1390]

THIS!

[@sitinorfarhana5510]

My lecturer just gave me the code and I need to copy paste it into java and see it for myself what it had done TT and tomorrow i have TESTTTTTTT 😭