Java Programming Tutorial - 14 - Using Multiple Classes

[@laurenmusic178]

This cleared things up SO much. Thank you! My book just said "Methods are helpful for large-scale, complex programs".... not sure how they expected me to conclude from that statement that you can put multiple programs into one main program.

[@kankanamgebandurathna2983]

...

[@zeeshankhalid5770]

Get a new book love

[@johnparker2486]

Damm! I am learning a lot from 7 year old videos

[@marinakozak6040]

8

[@towyan8187]

now, its 8 year old!

[@ruthvikchandra4715]

Hey

[@SnugLife]

Hey. :)

[@artemedutech]

Hey

[@Rayden440]

I cannot believe that I've been taking computer science at my high school for one year and have never been taught this! Thank you for finally clearing things up.

[@N1G_HT]

Agreed

[@vojastevanovic6634]

2023 We still follow you! Actually Chatgpt suggested you among the top three complete, comprehensive and reliable yt channels to learn java programming! Well done!

[@Hafiz_Muhammad_Zaeem]

What are the other two?

[@SasmithaGangadaraHAMMERHEAD]

I don't normally comment on anything, but this was really helpful! Thank you Bucky! Even after 7 years, your stuff are still gold! :D

[@sujitpachode3207]

Even after 12 years 😅

[@cryostice]

@@sujitpachode3207 Still relevant!

[@rolandemmanuel6399]

Exactly Weldon

[@tboontboont3056]

Knowing something, and be able to teach it to someone, it's two different things.Well done.Tnx

[@briandacallos4234]

2019 ? 10 years ago and it really saved me a lot ! not afraid in programming coz bucky is always here HAHaa

[@charleychener]

11 years and still

[@Chris-sg4oy]

The way he dumbs it down makes the video absolutely spectacular and learnable. 10 years later this is still an invaluable tutorial!

[@Zornarka]

Hadn't expected to get back on here to freshen up almost 8 years after my initial go at Java, and on top of that; the day before this video becomes 10 years old!

[@nirmanranasinghe4397]

10 years and still learning from your videos. Thank you bucky!

[@KomradeKyle]

The examples make this entertaining as hell "Bacon and Cheese Class" Awesome examples man, thanks for taking the time to post all these.

[@targho5744]

slowly learning, day by day, increasing my knowledge

[@ShiiteMusic]

Classes are not used to organize different sections of your code. Classes should really only be used if you are creating more than one Object. For example, instead of creating a class called tuna, we can create a class called fish. in our Main function we can create a new object: fish tuna = new fish(); Say later on you would like to add a goldfish object, all you would have to write is: fish goldfish = new fish(); Since goldfish and tuna are similar in that they are both fish, we do not need to create different classes for each. I hope this helps

[@yannickvankerkhove5371]

That makes more sense, thank you! I think it would have been clearer to use better analogies in his examples, like animals - mammals - cats for example instead of apples and tuna.

[@obaykadour8680]

😂😂😂nice

[@KimSoo-t2s]

Learning a lot from this 14 years old video 😮

[@SumBlackGuy508]

Im a programming major in college and YOU teach me more in 10 mins than my Java Prof. does in 90 THANK YOU BUCKY

[@1988virgil]

The Year is 2023 this is still valid yt channel to learn Java thanks Bucky!!!

[@artamjeku]

Watching this on May, 9 2019... 10 years later!

[@starboiii.04]

11 years later

[@j.bright6802]

I don't know if you still update or view this page, but thank you for these tutorials. You explain so much better than my textbook does. I just read about this and I was mentally smiling and nodding as I was reading it. Now, I can reread it with a better understanding.

[@boenliu7676]

i...fucking....love you......saved my ass on a homework assignment.

[@boenliu7676]

+BoEn Liu hi ramon

[@Sasha-zx5et]

Same here

[@jamesleidhold]

Same. This is big stuffffff

[@williamdriver4611]

Hey just wanted to say thank you. I started trying to learn JAVA (with no experience) from a text book at home. Your videos have given me a bridge between where I am and the book. I am now writing my own code. I couldn't have gotten this far without you. Thanks.

[@fadybengoufa6379]

Watching it in 2018 still useful . thank You.

[@vineetahendry]

I just want to THANK YOU for your tutorials! I've been struggling with Java for months now in school. I've only watched the 1st 14 of your tutorials and have learned more, understood more than the months of class work I've been doing. THANK YOU!!!!

[@theeawkwardchild]

A couple years back i took a java class with a very confusing instructor which made me drop it but this really makes me feel like i can learn it

[@hypogogix9125]

Studying my HNC computing in Scotland. These video tutorials are a life saver and thenewboston is epic. Thank you so much bucky =D

[@fauzytech]

System.out.println("The best tutorial EVER");

[@sandpaperunderthetable6708]

Error: unable to find class Main

[@priteshranjan8765]

@@sandpaperunderthetable6708 !!

[@flake1943]

20 tutorials done in one day, explained very well, i learned something new even though i know java

[@mcpaintcraft8709]

Ok, so Bucky (a.k.a Greg) explains that you can create an object for a class to connect both classes. What he doesn't tell you, is what static means. Static is basically used for the same purpose as an object for a class is (connecting two or more classes to shares things), but is lots easier to code. Here is an example on a static method: class Test{ //creates a static method public static void Eat(){ } } class Test2{ //gets the class and the method without creating an object //if I were to create an object for the Test class, it would be: Test testObject = new Test(); Test.Eat(){ } }

[@stygiandemon]

Thx Mc Paintcraft its much easier this way but I Think Bucky method will be important later.

[@mcpaintcraft8709]

Just remember, there are multiple ways of doing something in Java. I just like to choose the easier paths, but know what the other paths do. There are some occasions when you do not want to use static. Occasions such as GUI programming, because it's often called bad programming practice. The reason, well, if you had two components that were declared as static components, and yet they were an instance of your GUI program, the results would be the same for both. I don't know about anything else out there that could go wrong, but that's one of the main problems I could think of. You're welcome ;D

[@MattLoveday]

Mc Paintcraft You would not want to use static for templates of objects for example enemies in a game. You may want multiple ad having them as separate objects is the best way to do that.

[@mcpaintcraft8709]

That is why I corrected myself.

[@Colstonewall]

Mc Paintcraft This video was about using different classes that interact, NOT about Static variables or Static methods which are a whole nother ball game. . .I can't speak for Java, but in Python, static methods are used a whole lot, only for very specific purposes. I would think it would be similar for Java. So, Im not sure what the intent of your comment is? To try and insult Bucky? Or was it just an innocent comment?

[@einekartoffel3531]

I learn better watching these than from going to my lectures. Good job man, thanks for these. They really help.

[@zaheer00]

Still learning in April 2018. Thanks man, appreciate all your efforts!

[@micoruzic6947]

Did you finish his tutorial?

[@DABCI]

Bucky! You may never know how great instructor you are, but let you know you are one of the best instructors I have seen so far. You help alot. God bless you brother.

[@nescius2]

finally, 14th episode and i learned something something new

[@danielstryver8388]

thank you for taking time to share your knowledge. I'm currently studying "beginning programming with java for dummies," and paired with your tutorials I'm getting the hang of things quick. my subscription to your channel is well deserved. thanks again

[@Warriorbeans44]

This literally is a life saver. My programming teacher refuses to go over classes till the 3rd semester of the year

[@yolog37]

I know this vid is like 11 years old, but it really helped me a lot! Clear and easy to understand, Thank you!

[@kanalbleatchtojeeshe]

this guy is really obsessed with food.

[@MustangDesudiroz]

who isnt

[@hirakhirak9119]

look who's talking

[@ugurcanaydn5999]

My book struggles to elaborate on variables(double,int,String) and you elaborate everything in 6 min.You express things pretty well.

[@OffUltimateGamer]

Your tutorials make me hungry. :D

[@cyclo9]

Cool_Dude_9090 Get yourself a nice toast and a cup of java.

[@ronitjalihal86]

thanks bucky ,very helpful. you probably won't read this but it gives harmony to my soul.

[@KevinYouAreAmazing]

"dimple message"

[@matthewrideout426]

hey dude, thank you so much for these videos. For the past 6 months I've been using books, paid courses online and they are just over complicated and it obstructs my learning. These videos are great. Thanks man.

[@jamesbrown-yr5cz]

where u do u really put the [] sign? before or after args, the square bracket in public static void main(String args[]){ }

[@CassielusMaximus]

does not matter

[@CassielusMaximus]

@C lol maybe it would help someone watching this video in the future

[@gibemass6578]

When this all clicks it feels incredible. Thank you Bucky.

[@EpochIsEpic]

Classes used to confuse me so much. They don't any more and that pleases me.

[@nishant3105]

Man this is brilliant.. the way you explain things is exceptional.... u say u are lazy but u do have a patience of an instructor... love your videos ...

[@cuteashish16]

What if I write tuna class code below the apples class and then run the program instead of making a new class? Will it run correctly?

[@khursandshakeel8767]

Yes, the program will run perfectly. However, it's much better to write each class in a separate file. This enhances readability and will allow you to easily edit/modify any class later on of you want to.

[@cuteashish16]

+Khursand Shakeel okay, thank you.

[@khursandshakeel8767]

You're welcome!

[@meinegrose]

this 6 minute video taught me more than a chapter that was filled with 100 pages based off this. Thank you

[@abhashization]

In older tutorial you wrote main as public static void main(String args[]) now you changed that bracket to public static void main(String[] args) what is the difference? i am curious

[@Jake1702]

There has to be something to explain why they both work.

[@MrAkshatmahajan]

They aresamee

[@Jake1702]

***** Yes, but why? What's the point of having 2 types?

[@emretanrverdi302]

Java's prefers the "public static void main(String[] args)" Because java's syntax is also designed on arrays like: int[] array .. not int array[] But int array[] is also accepted because C/C++ syntax uses it like that. So Java accepts it too just because the others can accomodate. It's okay to use, but not preferred.

[@yogod3110]

Jake1702

[@notnotmurico8783]

Big brother your explanations were very brief and easy to understand, i watched all your toturial from C-Java and i can say that your tutorials are the most reliable tutorial especially when you're having an advance read. again tnx!

[@snake8613]

thanks for this tutorial :D you can explain better than my prof at university... which is quite sad xD

[@AbdulRehman-yo2qn]

Bucky your videos are one of those where one hits the like button before even watching them.

[@morsela6913]

you are one hungry man.. apples tuna bacon & cheese...

[@nelsonneto1786]

Mc Paintcraft Hahahah kkkkk is a brazilian laugh, dude xD

[@mcpaintcraft8709]

Lol, still though, he's part of the KKK, omg. lol

[@yup632]

Nelson Antunes Laranjeira Neto nada vê, o cara é com certeza parte da KKK.

[@omegapixelled]

Nelson Antunes Laranjeira Neto try continuously saying the letter k that is not a laugh thats uh... "KUUUUUUUUUUUUUUUUUUUUUUUUUUUUUH"

[@mcpaintcraft8709]

I'm confused by your comment.

[@edwinlimo5354]

Thank you so much, I have learned that you can have as many classes as possible and call them from the main.

[@totalytaco3715]

6,969 likes, I'm not breaking it.

[@remembermyname2697]

+Totalytaco hhhhhhh lOl

[@andromaster1]

+Totalytaco its broken :(

[@masterinting4125]

+Totalytaco break;

[@orangeceralbowl589]

NOW 9, 696 LOL

[@fromup9594]

10k

[@likimiar]

Just watched it again many months later and it just clicked. Thanks man you're awesome. I owe you a tuna apple cheese sandwich.

[@JossinJax]

wants to know why he didn't use "static" in his new tuna class.

[@evileye100]

Because he`s create the new object of class

[@chuckscott5624]

Thank you, thank you! In the ending weeks of my first programming course and was hella lost. You have a clear and simple way of explaining things.

[@DeltaVTango]

Hey the first time I saw this I thought I understood, but trying it myself I realized then you used tuna as the class name and as the object name in the main class, that it didn't need to be named tuna, you did that because you like to used food as names, Your videos are awesome but that kinda threw me for a spin for a while till i exprimented myself and realized what was really up. Just hought I should mention

[@mediocrity937]

I can't believe I learned so much in a 12-year-old video. My teacher taught us this for 30 mins and you just explain this in 6 mins!!! I'm subscribing.

[@carbon9703]

1:15 It means that it is going to be available to the public 😂😂😂

[@bihazards]

A fitting way to explain the "." into other classes' methods is like directories in a computer. Like C:\Users\YOURNAME\Documents. Pretend the backslashes ("\") are dots ("."), and the dots are the way of accessing methods inside. Your variable for a class (ie. tunaObject) has simpleMessage() inside, which is like tunaObject being a folder, and simpleMessage() is a file.

[@thuzul1515]

Thank you have helped me with java so much X D

[@efrankdavis]

I'm thinking Buckey's a stoner. But he's the best teacher ever so live with it. Like that time he misspelled "trouble" and you had to live with that. Thanks Buckey!!! You rock!!

[@jsf360]

why tuna and apples?

[@emmanuelchimzytasie9546]

it's 2020 & its still beyond helpful and we are still using eclipse (updated version) even makes it more understandable. Cool guy Bucky

[@lopyus]

it shows like this, what does a package mean?: package bucky; public class apples { }

[@salibisaac9450]

can we use more then one method in the class? if yes how? thanks

[@lopyus]

Yes, just keep watching the tutorial

[@salibisaac9450]

Thanks just learning slowly.

[@johnisraelaquino4315]

Your tutorials are very helpful. I was programming in C before, and now weve move on to java, i found it a little harder. I remembered yesterday as my professor explains classes, objects and methods, I didn't understand anything. I like how you explained it step step. Subscribed. :)

[@fredgreen7287]

RIP class naming conventions

[@Rishab12312]

NucRS thinking same thing lmao

[@jerkface38]

Who cares tbh. It's not a necessity for learning and most people that program know how to camel case

[@alexanderfalgui8304]

Bucky's tutorials make any programming language Easy! I learned C++ and Python and a bit of ruby (Not all). Now i plan watch the whole series of Java and go back to python.

[@thenthapple]

if i put System.out.print(counter

[@prathamtangri3803]

'counter

[@ericsarason9099]

@@prathamtangri3803 How comes it's printing false twice at the end?

[@DhananjayJindal]

@@ericsarason9099 Presumable @thenthapple ran a loop with counter going from 0 to 9 (i.e. 10 times). For values 0-7, the condition - counter

[@ericsarason9099]

@@DhananjayJindal Thankyou :3

[@minecraftguides7760]

@@prathamtangri3803 You gave a response to an 8 year old comment lol

[@RimmaTJ]

I went through a gazilion online lectures, couldn't get anything and started already to believe that i am just probably soo damn stupid, but this video lecture is sooo simply explained and in such a detail! Bravo!

[@xinranchu2652]

Aren't the class names supposed to start with an upper case letter?

[@SomeRandomFellow]

They should

[@Nylfmedli14]

Constructors do

[@crhoads1024]

This is a fantastic explanation of not just what to do but why.

[@peterca958]

If teachers discuss this at schools, It would take more than an hour for them to explain what this is for.

[@huseyinaktas7405]

Good Tutorials for Beginner such as me who is new to JAVA and I am enjoying the tutorials and you make it so simple. Thanks again.

[@JustinSoeung]

"syso CTRL+Space" is a shortcut to system.out.println(); :)

[@heimskr2881]

After a year of computer science, classes still confused me. This cleared it up, thanks! I had a single file with 1500 lines of code, multiple classes should make things much easier and efficient.

[@anupriya1661]

To write System.out.println(); in less time in Eclipse, Just write sout and then press ctrl+space Thx me later :D

[@creeon9947]

This was made so long ago but you are a life saver thank you

[@luunguyen2217]

holy shit. I have been struggle for almost a quarter, and then I found this super helpful video during my studying time for the last final. Poor me...

[@Mihawk69]

for a 14years old video, i am learning a lot from this

[@rakusect3991]

lol you explained this faster than my professor's 2 hour lecture. For the longest time we'd been coding in only the main class, then for the next the project he assigned, he gave us a program that needed to utilize multiple classes to run. We were 2 chapters behind so he glanced over this simple concept. Mind you this is an intro class, but this should have been taught to us lol Thank you kind sir

[@arnavnarula1534]

It really helps adding code from all the past tutorials in separate classes. It helps since you can visit any previous code in the future without relooking the tutorials. :P

[@latedeveloper7836]

Timeless stuff. Will be helping me into 2021 and beyond. Thanks!

[@BigTylt]

Static means that it cannot interact with anything. The empty parentheses are simply a place where parameters will go.

[@Kazper31]

Nick: You can use lowercase, the compiler will accept it, its just not very readable if your dealing with a lot of code, you can also run into issues with naming a class with something that is in the FWL and will create issues and errors.

[@anniewong456]

super helpful video! I just switched with C++ to java and I had no idea what was going on this class until now.

[@markus031098]

With a background of other programming languages like Python or Javascript, this is pretty much all you need for Java. The way Java handles variables (done), and classes (this video), is pretty much all that is different. Only thing you need to do now is look up Java arrays and it's various functions as you need them.

[@henanren]

String[] args is an array of strings called args. This allows the main method to use strings as arguments in its parameters.

[@bhaskar_5168]

Iam new to this coding world.. You helped me alot. God bless you.. Love from INDIA.

[@jason3775]

I swear by all things holy you are the only person that was able to get this through my head.

[@Abadaa]

Lmao. Same here..

[@halosinner2]

The difference is the declaration of the array. For instance, int a[], b[],c[] is the same as int[] a,b,c.

[@mohamedyusuf7748]

Thanks man I have been trying to learn to code since forever and you are the only one who really make sense.Keep up the good work

[@algo3an]

you explained it a lot easier than my professor. Thanks a million

[@xaku5383]

Been learning Java for 4 years at School.. Barely learnt anything.. I am going to try to follow these tutorials and actually learn something practically useful.

[@shoaibahmed6958]

wish i could meet you in person...... i wouldnt even go to a university if could have a teacher like you..... Great tutorial

[@gene8447]

Why is it that so many people who call themselves programmers feel the need to shut others down who wish to learn? You're not a part of some secret club. You're just someone with a superiority complex.

[@sparrowthesissy2186]

Wow, very straightforward. This same kind of thing was a pain for me to get right in C++ when I was first learning it. This almost makes me wish I learned Java first.

[@Eli-cq8th]

Skimmed through three textbooks by Ph.D.s: couldn't understand this. One simple ten minute video by a teenager: makes perfect sense

[@Sokka515O]

If you download a simple program called PowerTools, you can right click the top the Eclipse window and select 'Always on Top' and this will make it so every time you click on KZbin in your internet browser, Eclipse does not go under KZbin. You also can set the Transparency od the window with is program and you have these options for any window.

[@zachsawyer9038]

This just explained everything that I was having such a hard time grasping. Thank you!