Java Programming Tutorial - 5 - Variables

[badboarder4]

System.out.print("enter a numer: ");

int number = console.readInt();

if (number > 9000)

{ System.out.print("it's over 9000!!!!! ");

}

Get this to work and it's awesome

Try this.

[ReeceTheComputerGeek]

Great Video man!

[daytdog]

I love you! (No homo)

[MaximillionTheYeti]

Instead of adding all of those

system.out.print(variablehere)­;

system.out.print(othervariable­here);

You could just do

system.out.print(variablehere + othervariablehere);

[raydenovo]

apples and tuna

[gyngrbred]

i have some a so how can i print the word tuna if i have a variable called tuna?

[flatballoon45]

@gyngrbred This was just an example. Normaly, you probably want to have like complicated numbers as variables. (when i say complicated, i mean that it makes it look pro.)

[gustavboll1]

int

double

float

boolean

String

...???

[TheBlackDeath3]

@gustavboll1

int: integer - used to represent "whole numbers" only.

double: double-precision floating point - used to represent any real number.

float: single-precision floating point - used to represent any real number.

boolean: used to represent basic truth value (true or false)

String: used to represent literal statements such as "movies" in this video.

There are many other primitive types as well. Google "variable types in Java".

[gustavboll1]

@TheBlackDeath3 i know but do it exists more then

byte,short,int,long

float,double

boolean

String

[DiamondCrackers]

You are awesome. Thanks to you i finally get the purpose of variables (hope i spelled that right).

[SpaghettiCatalyst]

Thanks from Ukraine!

[rcosnett]

I have watched 5 of your Video's. They are extremely good. I have looked at various java tutorials,

and yours are the best. I was struggling with java until I watched your video's.

Keep up the good work.

Thanks

Bob from England. 

[danielmcgarrity2]

2+2 =fish

[PolitePuppy2313]

Why do you always have to include food?

[FabioStream]

Thanks bro!! ;-]

[UltraDrago2000]

What abbot the other variables? What are they called? How are they used? That pissed me off how you didn't even say what they were

[ethan1581]

@UltraDrago2000 What other variables? There are no other ones.

[Snipeshot286]

lol you say back in seventh grade and im in seventh grade :P i like your tutorials their very detailed. +1 subscriber :)

[MrDestracto]

How come when i run it it only says tuna

[mafiameower]

@MrDestracto did you put the tuna in quotes? like so

system.out.print("tuna");

take off quotes.

[bluestreak711]

I know how you store a number variable in an abc variable but how do you store an abc variable inside a number variable? With that knowledge I could create a lot more things.

[DICKCHINHARY]

he forgot to mention the ; symbol.. because you are on a compiler you can't finish your line of code (or sentence) with a period. the compiler will be confused and mistake it for a decimal. therefore to end your line you use a ; symbol. thats all.

good tut

[JakobRobert00]

in school java is so boring but with your tutorials its so much fun!

[BetaHatHack]

why not use

JOptionPane.showMessageDialog(­"My favorite number is: " + tuna);

[GModPlyr]

JW but cant you do System.out.print("I want " + tuna + "movies");

[TeamTunaHDD]

Tuna is the best variable name ever.

[CareyPortnoyBeauford]

you just helped me with my homework. you're better teacher than my college professor. THANKS

[zaidalyafey]

whole numbers cannot be negative they are the natural numbers {1,2,3.....} plus 0

and they are part of integers that contain all positive and negative numbers.

[HitaroX]

@zaidalyafey negative numbers are integers though...

[zaidalyafey]

@HitaroX

of caurse they are ,,, but whole numbers are just positive integers

[trueredexe]

Yea, you better set aside at-least 2 weeks to understand constructors.An another to know how classes work. Up till then, your only learning syntax.

[majsorm1997]

I want tuna movies

[barcelonacoolness]

I am in 7 grade

[Truttixpelailee]

It is hard to learn java if you dont speak england so i will go to library and i will be book worm...

[dddddddd92]

im learning how to code runescape bots... thank you xD

[allowkid]

Thanks, I didn't know mutch about java until u taught me ( :

[THEGAMINGRULER]

lol knowing javascript and c++ and vb i predicted how the syntax goes for the for statement the while statements and booleans

[CWMlolzlz]

thi sis a stin

[driesmp]

so simply saying;

double = real number element of R; (examples : Pi, E, ... )

int = integer number element of Z; (3,5,4)

Attention:

if you do 5/2 you get 2; residual divided

if you do 5/2.0 you get 2.5; reeel divided

[dragonthewatcher]

public class Variable { public static void main (String args[]){ double OVERNINETHOUSAND; OVERNINETHOUSAND = 9000.001; System.out.print("I NEED "); System.out.print(OVERNINETHOUS­AND); System.out.println(" SPARTA KICKS");

}

}

[sesshoumaru3st]

@dragonthewatcher System.out.println("I need "+overNineThousand+" sparta kicks");

the plus is a conjoining operator that allows any data type to be presented in the format of a string.

[dragonthewatcher]

public class Variable { public static void main (String args[]){ double OVERNINETHOUSAND; OVERNINETHOUSAND = 9000.001; System.out.print(OVERNINETHOUS­AND);

}

}

[mariosunshinefaan]

If "double" is what you will put before a number with decimals, what do you put in, stead of "double" if you want a number without decimals, and/or if you want a word instead of a number?

[Cycyryable]

@mariosunshinefaan "int"

[mariosunshinefaan]

@Cycyryable I just found out "int" is for whole numbers. Is it "int" for letters as well?

[ThexKezza]

What is it with you and apples!!!

[dragonthewatcher]

@ThexKezza and bannans

[dragonthewatcher]

@ThexKezza and bannans

[dragonthewatcher]

@ThexKezza and bannans

[dragonthewatcher]

@ThexKezza and bannans

[Sanket8688]

Thank You Brother :)

[TzKet4m]

I wish they also taught this at highschool..... but Bucky is still great lol >.<

[goztepe99]

"Don't believe me?", but we do believe you why do you have to proove shit :P

[pietteke1]

damn, this is c++, but with other names xD (btw i can program in c++) yeey

[xrxt0]

i learned about variables in 6th grade ^o)

[andrewredpsnuser]

dam i got it wrong but eclipse told me what was wrong and boom its working this is what i missed=;

[kazuzuagogo]

jaba

[ultislasher1]

3:56

30 minutes of learning for a simple program that says 5.28

=\

[Jaikayz]

What font do you use?

[ultislasher1]

oi wait a sec I learned about variables in 3rd grade >:O

[ultislasher1]

"math class back in 7th grade or what ever..."

I'm ten and I'm still in 5th grade (Elementary) O.O lol

[xJustas]

In eclipse write syso and press space + enter, thumbs up, so everyone can see!

[Salagarren]

He's a good teacher

[Nanoxenium]

Wouldn't it be easier to understand if the "println" statement meant end line instead of print line?

[wei2912]

@Nanoxenium It seems to be a short form for print a line and end it.

[COD5252]

1:41 lol

[pawelweb1]

I Know What's A Variable I Learned It When I Done Javascript In HTML

[OCoptimusconvoy]

so a double is basically a float?

[CheesitWeesit]

@OCoptimusconvoy more or less, but floats store numbers a tad more efficiently

[OCoptimusconvoy]

@CheesitWeesit so can we still use floats in java?

[fortawesomm]

Thumbs up if your going to beat Minecraft with your java game!

[json453]

lol learning variables in 7th grade right now! in pre-algebra!

[xXTheRush905Xx]

Thumbs up to boost my self esteem! OMG I hate those...

[gettlo5]

You know you're a computer nerd when your favorite number is 5.28 lol

[ps3teb1996]

@gettlo5 or you know that pi is 3,141592653589 ;)

[guitarchickcrazy137]

@gettlo5 favorite number for physic nerd would be 137 :P

[dragonthewatcher]

@gettlo5 mine is 3 :3 i have no idea why :3

[jeffery1855]

@gettlo5 why?

[solomonchild5]

@gettlo5 I don't get it, please explain

[gatoo23]

@gettlo5 or a math nerd when your favorite number is 6.28 lol

[Eiglew]

You messed up the names for the tutorials. 4 and 5 should switch places

[KinzokuKoibito]

you should make a double and call it rainbow

[ziggybiggyboom]

I used to know java, then I took an arrow to the knee

[KinzokuKoibito]

@ziggybiggyboom I used to know java, then I forgot java, now im learning java

[ThePujs]

I guess you really like apples =D

[PointBlanc54]

VB is so much simpler :/

[MalkanorBek]

You, my good sir, have a new subscriber!

[therightpremiums]

Thumbs up if you going to make a simple game with java!

[OCoptimusconvoy]

@therightpremiums screw simple :P

[Theminecraftplayerdd]

@therightpremiums No. I'm going to make a MINECRAFT like game.

[therightpremiums]

@Theminecraftplayerdd Okeay...

[lukerulez2009]

@Theminecraftplayerdd Then why did you say no? Your still creating a game regardless of what it's about.

[pietteke1]

@therightpremiums like minecraft ?? xD

[therightpremiums]

@pietteke1 So you think minecraft is a simple game?

[pesukarhu683]

@therightpremiums Isn't that the point of java? :D

[kidharris55]

ive been learning c++ for a while now. coming back to java everything is easy now! i think ima stick with java.

[SpeakerFrequer]

@kidharris55 oh no! that doesn't make me feel good lol. I first learned python (which is easy and makes sense to me), now learning Java (second time through these tuts, dont like how I have to declare all the variables where in python it automatically did it but I assume Java is more complex because it is more powerful, no?), next I was going to learn C++... oh well, guess I'm going in the right order then :p

[VideoGamerHD]

@SpeakerFrequer lol python has a different syntax to c++ and Java :P That's why @kidharris55 found Java a little bit easier to learn.

[tshayansr]

Bucky for the President !!! \0/

[lub094]

"5.28 my favorite number" LOLing for and 5.28 mins so fari

[jdog90000]

haha i love how you say, don't believe me? nah dude i have no idea what ur saying but i still dont believe you :p

[ihavetoshutthewindow]

sorry about my last coment :(

[PhilmPhun]

Hello Bucky, I'm getting the hang of it. Would you mind posting simple "assignments" as a follow-up? Of course, include an answer somewhere....

[ronami101]

Your favourite number is 20

[Lijrobert]

@ronami101 Mine is 2 it gose into all even numbers and even numbers are my favorite type of videos

[kimorsa]

Nice tutorial!

[ihavetoshutthewindow]

dude... IM 11 YEARS OLD AND IM IN FITH GRADE!!! no joke! im getting a head start in java!!!!! Thumbs up if you think programming is easy!

[iwazerein07]

@ihavetoshutthewindow lul no



[xInstinctful]

@ihavetoshutthewindow Dude, this is the second thing you are making, it will get harder of course.

[JakeJohnRogers]

@ihavetoshutthewindow You're an idiot, it gets really hard and complex later. Stop being proud of your age, you're not special or unique.

[MrHourlyCookie]

@ihavetoshutthewindow wow u bad

[bobbycat123454]

...

[CallyB97]

Is your birthday the 28th of May?

[KryptonicxXxX]

thumbs up if your going to make a mod with this

[testforhq]

thumbs up if your here for minecraft :D

[sorontorox]

I hear you talk more then i hear anyone else xD

[millsy1804]

You are more helpful than my lecturer, thank you

[joonbaa]

I WANT TUNA MOVIES

[Fayzh]

Bucky,... you're HOT!

[TheDemonStr]

bucky 

[JakeFerrante]

haha, i'm in 8th grade math and i'm working with variables :x

[The1717awesome]

@JakeFerrante

lol im in 5th grade and is doing the same thing XD

[joeberro1]

dude i luv alot right now. plz keep making P.S iaint gay

[Dercommandingofficer]

1:43 "Bluh bluh bluh" LMFAO 

[1234chazman]

i have copied everything there but when i o to run it it said selection does not contain a main type please help :)

[JLuso4444]

Thank you Bucky! Someone give this guy a Nobel prize

[Pokihee]

I can't watch like 50+ tuts in one day... I love you Bucky. You're amazing.

[MineCrafterBrad]

@TheModernKillcam I'm not learning this for minecraft, but I will use it there :P and what I am learning this for is a game to make and run on minecraft's engine.... minecraft FTW

[iAmAlascar]

First I must learn the basics, then advanced, and finally the game development tutorials so I can make my own Minecraft. And so it begins.

[WhiteSleevedStu]

My favourite number is 5.28 as well xD

[12me91]

Minecraft, and Android.  yes.

[DKenobi1]

@105JellE , PrintLn tells the computer "after I write this, whatever else I write goes on a new line.

[ratchet900able1]

@DKenobi1

yes that's right :)

[105JellE]

What is the difference between print and println?

[Kronikwookie]

@105JellE he says it in the video cmon pay attention if you're actually willing to learn this.

[ratchet900able1]

@105JellE

the difference is that print makes the words in the same line but println makes everything you print next will be in a new line

[RockAmRing2oo9]

it says:

"The value of the local variable tuna is not used"

Why?

[135792468Baseball]

Thumbs up if your going to make an app with java

[gam3r3602]

@135792468Baseball Aha, I am going to "attempt to make" an app with Java.

[TheBmxkid24]

How do you add spaces between the printed words?

[marazali1905]

click4brichcom

[TheThakos14]

Are Java series complete?

[hobosmurf]

does anyone know why this doesnt work?

final double g = 16.0

double t = 35.5

System.out.println(1 / 2 * (g * t * t));

System.out.println("meters per second squared");

any help would be appreciated

[tomux7]

@hobosmurf

there is ur mistake

final double g = 16.0;

double t = 35.5;

then runned i get:

run:

0.0

meters per second squared

[renzozs]

@hobosmurf I strongly recommend you not to do any operation when your printing something, it's way better to do it before, saving the result and then display it on the screen

[hobosmurf]

@renzozs still doesnt work for some reason but thanks a lot, i didn't know that

[renzozs]

@hobosmurf hmm weird try this code:

final double g = 16.0;

double t = 35.5;

double res = ((g * t * t) / 2);

System.out.println(res + " meters per second squared");

[a1missle]

lol mod not mpb

[a1missle]

im mqking a minecraft mpd

[YOUxFUCKxCATS]

@a1missle You have fun with that

[a1missle]

@YOUxFUCKxCATS thx i will

[OhaiImTeddy]

Anyone else learning this to create an RSPS?

[ItsMeJayelle]

How can I compute the are of a triangle

[Twasik4]

@ItsMeJayelle 1/2 base times height

[TheFictiveUNIVERSE]

You’re an amazing teacher!!!

You’re the reason I’m passing my Computer Science class!



[shreymantu]

this is better than human teacher

[CloudDecim]

@shreymantu he IS human

[shreymantu]

@CloudDecim i meant human teacher in REAL time