Tic Tac Toe Java Game - Build a Tic Tac Toe Game in 30 Minutes  

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

ARE YOU SERIOUS DUDE!?? HOWWW I LITERALLY GOT MY ASSIGNMENT OF MAKING TIC TAC TOE YESTERDAY AND I NEEDED HELP AND GUESSS WHAT.... YOU JUST MADE A WHOLE VIDEO ABOUT ITTTTT!!! THANK YOUUUUU

notice how he is making mistakes in middle and correcting them ,makes me realize that making little mistakes while programming is so common and normal ... it's as if he is talking to us while programming unlike some programmers who r like - " so we r gonna do this and that and tadda" , really makes me feel kinda dumb bcoz when I try to program I really do lots of small mistakes like Alex ... really very nice video .. enjoyed it ..

I've got to say when I started learning Java certain things I found really tough but your channel help strengthen the areas I was weak and also gave me more passion to learn how to code. Thanks for all the lessons.

5:03 Cool, cool, cool. Save and run. And it still works. I felt that

Hi just pointing out a small bug: If you place a winning piece as the last move - it will still register as a Tie, since you put the last "else if" in the for loop on line 118. Put this check as a separate if statement outside the for loop and it solves it. Great video thanks for sharing

Kinda followed until about halfway through and then did this on my own. And then I modified it with the lists you added. Really cool tutorial, very easy to follow and understand!

Great explanation!! 🙌 Don't get disheartened if it takes more than 30 mins to learn . I'm a beginner. TBH it took me 6 hours and I'm proud of myself because this is my first mini project /game and i could totally understand and do it on my own .😇

HANDS DOWN SIMPLEST TIC TAC TOE PROGRAM + EXPLANATION. good work bruhh

the fact that I spent 1HOUR in the first 6 minutes is absolutely mad

I liked the way you took care of overlapping moves. I was trying to code on my own whenever I could and then check how you did it. The way I did it worked too, but made the code quite lengthy and a bit repetitive. It was a good experience to learn how to code more efficiently!

Who knew that the game tic tac tow would be this hard lol. I just started coding juts like a month ago and beggining to undertsand arrays. Ur videos help out a ton! This video happened to be in my recommended so I clicked it. Amazing video!!! Keep up the good work! 👍

I love your teaching style! Really easy to understand and make seem less scary to code in Java!

I'm wanting to learn Java for Android app development, and your videos are kinda helpful for me. Thanks!

i have no words to describe how grateful i'm after watching your java tutorials. YOU ARE AWESOME

Awesome tutorial! I went through all of it with you. Please post more! From a teaching standpoint, I suggest placing stops in your videos. Good spots would be after you describe what the next step is. (Like: Prior to making a method, give the name of the method and pause for followers to develop their own pseudo code.) This involves users, allows you to get ideas from users, and makes this more of a teaching session. Best part is you can add these breaks in post.

Im learning java here and this is my first project :)

Nice one I’ll do it when I complete my java course and know all these statements. We have finished array and next we’ll learn classes , set, and get ... Thanks bro I like your way to teach ! I hope you can be something special in the future because you always inspiring me !

OMG This was the best tutorial I've ever seen over internet. I just love the way, he make things easy for beginner like me. Thank you so much.

Dude thank you very much. Literally got the same project. Thank you very much!!!!

Thanks a lot man! I appreciate this a lot, very helpful. :)

Code after fixing some bugs:- import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Random; import java.util.Scanner; public class TicTacToe { static ArrayList playerPositions = new ArrayList(); static ArrayList cpuPositions = new ArrayList(); public static void main(String[] args) { char[][] gameBoard = { { ' ', '|', ' ', '|', ' ' }, { '-', '+', '-', '+', '-' }, { ' ', '|', ' ', '|', ' ' }, { '-', '+', '-', '+', '-' }, { ' ', '|', ' ', '|', ' ' }, }; printGameBoard(gameBoard); while (true) { //**********************PLAYER***************************************** Scanner input = new Scanner(System.in); System.out.println("Enter your position from 1-9 :"); int playerPos = input.nextInt();// Entering your position while (playerPositions.contains(playerPos) || cpuPositions.contains(playerPos)) { System.out.println("this place has been taken please Enter different position :"); playerPos = input.nextInt(); // Rentering your position } playerPositions.add(playerPos); placePiece(gameBoard, playerPos, "player"); // send your position to put printGameBoard(gameBoard); // print Board after your position System.out.println(); String result = checkWinner(); if (result.length() > 0) { System.out.println(result); playerPositions.clear(); cpuPositions.clear(); resetGameBoard(gameBoard); printGameBoard(gameBoard); continue; } //**********************CPU******************************************** Random rand = new Random(); int cpuPos = rand.nextInt(9) + 1; while (playerPositions.contains(cpuPos) || cpuPositions.contains(cpuPos)) { cpuPos = rand.nextInt(9) + 1; // Rentering cpu position } cpuPositions.add(cpuPos); placePiece(gameBoard, cpuPos, "cpu");// Entering cpu position printGameBoard(gameBoard); System.out.println(); result = checkWinner(); if (result.length() > 0) { System.out.println(result); cpuPositions.clear(); playerPositions.clear(); resetGameBoard(gameBoard); printGameBoard(gameBoard); continue; } } } public static void printGameBoard(char[][] GBoard) { for (char[] G : GBoard) { for (char M : G) System.out.print(M); System.out.println(); } } public static void resetGameBoard(char[][] gameBo) { char Symbol = ' '; gameBo[0][0] = Symbol; gameBo[0][2] = Symbol; gameBo[0][4] = Symbol; gameBo[2][0] = Symbol; gameBo[2][2] = Symbol; gameBo[2][4] = Symbol; gameBo[4][0] = Symbol; gameBo[4][2] = Symbol; gameBo[4][4] = Symbol; } public static void placePiece(char[][] Gboard, int ps, String pl) { char Symbol = ' '; if (pl.equals("player")) Symbol = 'X'; else if (pl.equals("cpu")) Symbol = '0'; switch (ps) { case 1: Gboard[0][0] = Symbol; break; case 2: Gboard[0][2] = Symbol; break; case 3: Gboard[0][4] = Symbol; break; case 4: Gboard[2][0] = Symbol; break; case 5: Gboard[2][2] = Symbol; break; case 6: Gboard[2][4] = Symbol; break; case 7: Gboard[4][0] = Symbol; break; case 8: Gboard[4][2] = Symbol; break; case 9: Gboard[4][4] = Symbol; break; default: break; } } public static String checkWinner() { List frstrow = Arrays.asList(1, 2, 3); List scndrow = Arrays.asList(4, 5, 6); List thrdrow = Arrays.asList(7, 8, 9); List frstclm = Arrays.asList(1, 4, 7); List scndclm = Arrays.asList(2, 5, 8); List thrdclm = Arrays.asList(3, 6, 9); List frstcross = Arrays.asList(1, 5, 9); List scndcross = Arrays.asList(3, 5, 7); List winning = new ArrayList(); winning.add(frstrow);// 1 winning.add(scndrow);// 2 winning.add(thrdrow);// 3 winning.add(frstclm);// 4 winning.add(scndclm);// 5 winning.add(thrdclm);// 6 winning.add(frstcross);// 7 winning.add(scndcross);// 8 int i = 1; for (List l : winning) { if (playerPositions.containsAll(l)) return "Congratulation you Won!"; } for (List l : winning) { if (cpuPositions.containsAll(l)) return "Sorry you lost this time :("; } for (List l : winning) { if (!(playerPositions.containsAll(l)) && !(cpuPositions.containsAll(l)) && playerPositions.size() + cpuPositions.size() == 9) return "CAT!"; } return ""; } }

hey, your video is excellent. It's good for people to see the true process of a programmer making code, trial and error. The code I would have done differently without so much repetitive code and doing better practices, but it turned out very well in the end.

These were the best 30min Investment in my life. Thank you for the commitment my friend.

More short games please.

That helped me build tictactoe in PYTHON XD

There’s nothing more satisfying than thinking of the same solution to the same problem at the same time as Alex

Hey one tip, when using switches, use case -> instead of :, you don't need breaks, you don't need returns and the Java Compiler compiles it much faster than the other variant. Only works in Jdk 13 though Edit: when switching between players, you could do it with a Boolean instead of a string and a equals method. I know this is just a simple tutorial and honestly it was great. I'm just here trying to help and improve the quality :)

I needed this so much. Thanks!

I used to suck in java now you are the almighty overlord in teaching lol Please like this comment i did your login and simple GUI tutorial video. My parents are proud

I honestly can't imagine watching anyone else for Java tutorials! Your videos helped me so much, and further made me want to develop games on my own.

Please make more such videos. You explain everything so nicely.

I have made this game earlier but you gave me better ideas to bring an update to my game and make it better. Thanks for the video Alex!

Im graduating next semester in cs and math and I still like watching all your videos even though Java is probably the language I know best lol

Started learning to code Java 4 days ago still confused af but decided to go along with this and see from what i've learnt and damn its starting to make sense now! Big ups much love!

As of Java 13, you can use much better looking and shorter, "enhanced" switch statements: switch (position) { case 1 -> board[0][0] = symbol; case 2 -> board[0][2] = symbol; case 3 -> board[0][4] = symbol; case 4 -> board[2][0] = symbol; case 5 -> board[2][2] = symbol; case 6 -> board[2][4] = symbol; case 7 -> board[4][0] = symbol; case 8 -> board[4][2] = symbol; case 9 -> board[4][4] = symbol; default -> {} } Mind the missing semi-colon after "default -> {}", it's mandatory.

i LOVE how slow-paced these are. some of the best tutorials I've seen

line 26 of your code should be playerPos not playerPositions. I was confused for a while because I was able to take the CPU positions in game. This was good for troubleshooting though!

You should make a C++ tutorial. I like your teaching style compared to some other channels where they go over important concepts too quickly and speak too fast sometimes.

Wow just wow I'm so so glad that I got this wonderful opportunity to do intership in sustem trons

Hope you make long videos like thats more often, its am still learning java and this type of videos help me to recover all what a learn and learn more logic int these statements, also the things i didn't learn yet is becoming more familiar to me and doesn't have an issue with it in class THANK YOU SO MUCH I realy im thinking to do videos like in my own language after i learn java because alot of student that doesn't understan english very will struggle to find a learning videos

Thank you for helping me pass my Java class Alex and I love your intro song Kazura - My Way.

bro you helped me alot, may you live long and beautiful life. amen

This tutorial is what the gang needs! Wahooooo

Wow I wrote my second java project with this....... Thanks. First was obviously hello world

Shouldn't the second while loop in main be like this? Just incase user selects a position where the cpu has already gone. while(playerPositions.contains(playerPos) || cpuPositions.contains(playerPos)){ System.out.println("Position taken! Enter a correct Position"); playerPos= scan.nextInt(); }

great video showcasing how to code in stages while doing a big project.

Yo your video helped alot some how i learned making a card game by my self (took me a couple of hours but it turned ok ) just by watching how coding works on your video's keep up these video's!

Just what I was looking for, you rock and inspire men, keep it rolling

I found the user was able to input on top of what CPU had already entered. I don't know where I made the mistake because I have the code the same as yours. The CPU is not printing on top of the user but the user can print on top of the CPU. If the user tries to enter on top of the user's own input, that's when the Choose another position error message pops up. I don't know if this is a bug or problem with my code.

I think you've could've made a nested for loop to iterate through the x and y indexes of the 2d array, instead of using a switch

I used almost none of this but this inspired me to use what I needed too💀💀💀 let’s just say I used way to me if loops😭 (I really don’t mind because copy and paste is a king!!!)

Arf, you should use % and / to set the symbol instead of your switch gameBoard[2 * ((pos - 1) / 3)][2 * ((pos - 1) % 3)]

suggestion.... change the white places on the origional gameBoard to the corresponding numbers to know where you are playing

Thank you Alex lee Finally made my first *TicTacToe*

Keep up the good work man, I'm supporting you.

thankyouuu so much man !!! ....i've never seen someone explain java so easily

Pure talent man 😄 , god bless you

This is an incredible video, thank you for all the effort you put in.I know I cant ask you for more, but it would be great if you teaches us a little bit more about AI and the stuff you mentioned in the video.

There are some bugs which I am unable to fix, but you're infinitely better than me! :D

Bro u did the most brutal hardcode TicTacToe for Java I have ever seen

Awesome video for beginners in Java, thank you man !

The most important thing I learned from this video is While(true) and break; this is going to help me so much!

Beginner here, this was SUPER helpful, thank you! Subscribing now :)

That was really good man. Keep doing.. It will helps for java freshers... And i am waiting for next one.. 🖤

Smart kid. Keep up the good work!

Heads Up: The loop for checking a win has an error. It will only check one win scenario after 9 moves. Since there have been 9 moves, the third part triggers and shows a tie, regardless of the outcome. You need to move the tie check out of the loop and then it can run after all win scenarios are checked. (Thanks Alex for helping me get started with Java.)

.....best intro I've seen so far.

dude you are really helping me with my college work

Yo, you saved me like 6 hours of work and research there. Subbed!

Hey this is awesome man. Games and gui programs usually engage people and let them learn with exciement. My question is, with your experience, do you study and do the prrograms before making a video or do you just do it as you record? It seems very natural for you.

i learn a lot from you alex

Awesome program, works perfectly :) Thanks a lot😊

Super helpful tutorial, Alex Lee. Really appreciate the explanations you gave.

Hello Alex on line 26 not sure if you corrected it afterwards but on that line it's supposed to be "playerPos" when you used "playerPosition". If it's not switched, it still let's player put X's where there are some O's. Amazing step by step though. I learned a lot from it. Also you probably won't see my message but i appreciate your videos.

This is fabulous! You are a great instructor.

i like how u divide ur method

Alex you missed one scenario where, if all the positions are filled and only last position is blank. Then user has to put X in last position and actually by putting X in last position he will win. But as we are having a condition if board is full then it will give us tie message, so its showing a tie. But actually Player wins that case

Thank you alex ! I appreciate the effort, very helpful!!

Thank you, thank you, thank you. Great code. Great program. Fun with Java!

This is awesome dude!!! I have learnt a lot from you

Me watched and download every single video you uploaded 😅

Thank you for your plain lesson! Making board game can expand knowledge of Array class.

is there really not a better way to check all the cases? so much code to do that... i have a similar program and did the same thing but its stressing me out because its so many “if” statements and im worried to put it on my resume in case its bad coding

Keep up the great work Alex!

You are A really AWESOME programmer !!!...we really appreciate the way(also style!) you are doing the coding...GOD Bless You ...love from India :)

So I'm following along with this, but for List topRow and all the others, it gives me an error saying "Type mismatch: cannot convert from List to List" did I do something wrong here?

lmao, I love this kid. the intro got me

love your videos man, i was wondering. will you ever make a junit video?

Buck all of your fav teachers...this boy is certified. Thanks cuhhhh 🤣💪

I'm so thankful for this video!

intro is ultimate :)

YOOOOO ALEX YOURE AMAZING BRO can you make a java calculator tutorial? love u man youre actually cool

This is really helpful, I learnt a lot from it. Keep up the good work

Great Video! I was wondering could you cover GUI too?

i cant thank you enough you are a great teacher

thx for awesome explanation !! 🧡🧡

Sen var ya sen, sen adamın dibisin.

this was so fun to build! thank you, i'm so much more motivation for continued learning java ♥

Great Videos, I love your channel. It would be great if you could make the TicTacToe game using graphics, awt, swing. It would be a great lesson on extending and using canvas. Thanks again.