Java snake game 🐍 

I didn't really expect this video to blow up. This was meant to be more of a practice project. I probably would have spent more time optimizing the code if I knew it would get this many views lol Well what you see is what you get I guess... //******************************************* public class SnakeGame { public static void main(String[] args) { new GameFrame(); } } //******************************************* import javax.swing.JFrame; public class GameFrame extends JFrame{ GameFrame(){ this.add(new GamePanel()); this.setTitle("Snake"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setResizable(false); this.pack(); this.setVisible(true); this.setLocationRelativeTo(null); } } //******************************************* import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.Random; public class GamePanel extends JPanel implements ActionListener{ static final int SCREEN_WIDTH = 1300; static final int SCREEN_HEIGHT = 750; static final int UNIT_SIZE = 50; static final int GAME_UNITS = (SCREEN_WIDTH*SCREEN_HEIGHT)/(UNIT_SIZE*UNIT_SIZE); static final int DELAY = 175; final int x[] = new int[GAME_UNITS]; final int y[] = new int[GAME_UNITS]; int bodyParts = 6; int applesEaten; int appleX; int appleY; char direction = 'R'; boolean running = false; Timer timer; Random random; GamePanel(){ random = new Random(); this.setPreferredSize(new Dimension(SCREEN_WIDTH,SCREEN_HEIGHT)); this.setBackground(Color.black); this.setFocusable(true); this.addKeyListener(new MyKeyAdapter()); startGame(); } public void startGame() { newApple(); running = true; timer = new Timer(DELAY,this); timer.start(); } public void paintComponent(Graphics g) { super.paintComponent(g); draw(g); } public void draw(Graphics g) { if(running) { /* for(int i=0;i0;i--) { x[i] = x[i-1]; y[i] = y[i-1]; } switch(direction) { case 'U': y[0] = y[0] - UNIT_SIZE; break; case 'D': y[0] = y[0] + UNIT_SIZE; break; case 'L': x[0] = x[0] - UNIT_SIZE; break; case 'R': x[0] = x[0] + UNIT_SIZE; break; } } public void checkApple() { if((x[0] == appleX) && (y[0] == appleY)) { bodyParts++; applesEaten++; newApple(); } } public void checkCollisions() { //checks if head collides with body for(int i = bodyParts;i>0;i--) { if((x[0] == x[i])&& (y[0] == y[i])) { running = false; } } //check if head touches left border if(x[0] < 0) { running = false; } //check if head touches right border if(x[0] > SCREEN_WIDTH) { running = false; } //check if head touches top border if(y[0] < 0) { running = false; } //check if head touches bottom border if(y[0] > SCREEN_HEIGHT) { running = false; } if(!running) { timer.stop(); } } public void gameOver(Graphics g) { //Score g.setColor(Color.red); g.setFont( new Font("Ink Free",Font.BOLD, 40)); FontMetrics metrics1 = getFontMetrics(g.getFont()); g.drawString("Score: "+applesEaten, (SCREEN_WIDTH - metrics1.stringWidth("Score: "+applesEaten))/2, g.getFont().getSize()); //Game Over text g.setColor(Color.red); g.setFont( new Font("Ink Free",Font.BOLD, 75)); FontMetrics metrics2 = getFontMetrics(g.getFont()); g.drawString("Game Over", (SCREEN_WIDTH - metrics2.stringWidth("Game Over"))/2, SCREEN_HEIGHT/2); } @Override public void actionPerformed(ActionEvent e) { if(running) { move(); checkApple(); checkCollisions(); } repaint(); } public class MyKeyAdapter extends KeyAdapter{ @Override public void keyPressed(KeyEvent e) { switch(e.getKeyCode()) { case KeyEvent.VK_LEFT: if(direction != 'R') { direction = 'L'; } break; case KeyEvent.VK_RIGHT: if(direction != 'L') { direction = 'R'; } break; case KeyEvent.VK_UP: if(direction != 'D') { direction = 'U'; } break; case KeyEvent.VK_DOWN: if(direction != 'U') { direction = 'D'; } break; } } } } //*******************************************

A fun channel with good English? Am I dead? Is this heaven?

Great video! I am working my way through my CS degree and am writing programs that I have to think about for 10x longer than it takes me to code them. Videos like yours remind me that programming is FUN!. It also helps me to understand how the concepts we are learning are used in everyday applications. Subscribed my man! Thanks again!

This may be one of the most underrated coding tutorial/learning youtube channels with out a doubt

straight-forward, short, easy to understand; I came across your channel through this video and I am happy to watch the whole Java playlist and I´m glad that you still making videos. Well done sir!

Your code is great, but i have a suggestion. At 9:12 You define and initialize the GAME_UNIT final constans, which later creates a huge and unnecessary X[] and y[] coordinate arrays. I would rather write this: _static final int GAME_UNITS = (SCREEN_WIDTH * SCREEN_HEIGHT) / _*_*(UNIT_SIZE*UNIT_SIZE); // 576_** In this case the x[] and y[] arrays will be at size 576 which equals 24x24, and in this case this is the exact size of the the game field. After that I would initialize the arrays like this: final int x[] = new int[GAME_UNITS / (SCREEN_WIDTH / UNIT_SIZE)]; which will give you an array with 24 elements. *This way You will save some memory.*

3 years ago and still helping !! Thank you for giving up your time to help others learn for free!!

Great tutorial, I just started learning Java and had no idea it was so powerful. I did some C++ and it seemed I needed a 3rd party framework for everything, but Java has native libraries for just about everything it seems. All the different classes/interfaces and functions/methods are difficult to keep up with but this video is helping a beginner like me become more familiar.

Awesome video! It's short, sweet, to the point; and best of all, it's fairly simple and straight forward. Thank you for sharing the knowledge!

Bro, I'm sure all the people who watch your videos are enjoying your style of teaching and also like your tips. I really enjoy watching all of your tutorials, you make things look fine and easy. Keep it up, Bro!

Thank you 🙏 Bro code. My instructor cited your video sometimes and I learned a lot from your video. It’s cool. Appreciate your work.❤

bro, your channel is truly underrated. u deserve more than at least 10,000,000 subs

Hey fantastic tutorial, thank you! One thing I noticed that is off a bit, the checkCollisions() is off by one UNIT_SIZE on the right and bottom, so you can actually go slightly off the screen on those sides. I just subtracted UNIT_SIZE to fix this. if(x[0] > SCREEN_WIDTH-UNIT_SIZE) { running = false; } & if(y[0] > SCREEN_HEIGHT-UNIT_SIZE) { running = false; } Can't wait to dig into more of your videos, thanks again!

explanation 100, very easy to understand, code neatness 100. thank you

Wow, that's a pretty impressive score you got In the end. Not that you are only good at coding but also at the games you create. Also thank you for your helpful tutorial.

Thank you for this tutorial ! I got stuck twice while coding it, once my snake didn't move anymore and the other the apple was drawn wrong so the snake couldn't detect it. Both were my bad, now it works fine, had a lot of fun with this

Underated is the only word that describes you bro. Thanks

Great video, just finished it and works perfect, this is the first fun thing ive done with java, thanks for the videos,keep up the great work.

This was a really good experience. I never get bored with your video. thank you for all the work under ground, your videos are so helpful.

You cannot imagine how you helped me, Bro. I liked this code so much I'm improving it to present it as a simple project for my school :) My plans are: Restart button Pause menu Top score

Thank you very much for your help, this is my first massive JAVA project. You are a great teacher, good luck!

This is going to be #1 Java channel on RU-vid

This is a big help! I'm planning on getting Java certified in a year or so, gotta start somewhere. Keep up the good work!

Hello there sir, I am a Student learning Java on a Second Year Level , we are currently on the CLI Programming lessons but i already did my advanced learning and studies and i saw this video , and find it very inspiring to me and i am planning to add this on my Mini System Project, I may ask for the source code of your game if you will give me permission :) .. just for educational purposes

tysm for the tutorial! I usually have a hard time following tutorials like these but this one was easy for me to follow and understand even though I only know very basic java. This really helped me, thank you!

I appreciate your time that you put in to these videos. And, you really know your stuff. I think, for me, I'm still new to programming; I know very little about programming, and I think I take awhile to catch on too. But, I wish you would give more details like "this part of the code does this," etc.

This is so amazing!!!! Thankyou!!!!!!

These videos are really helpful, I watch them with my friends on Voicely whenever we practice coding. We all agree that we learned more from RU-vid videos than from school lol

Hey guys, i added this to my code, to also move with the wasd: public void keyTyped(KeyEvent e) { switch(e.getKeyChar()) { case 'a': if(direction != 'R') { direction = 'L'; } break; case 'w': if(direction != 'D') { direction = 'U'; } break; case 's': if(direction != 'U') { direction = 'D'; } break; case 'd': if(direction != 'L') { direction = 'R'; } break; default: break; } } this goes after the keypressed method, i find it useful for me because I play a lot of FPS games so yeah i added it for convenience

I missed "break;" after each case for "switch(direction)" the snake was going GameOver for every LEFT and UP directon thanks a lot BRO for teaching a noob how to build a Java game, this is a huge thing for me! ❣

Man, you are good at explaining. Please continue to build more game projects.

Neat project :D Hoping following along with many of these projects over the summer will help my mind absorb some of the info. Also this was a lowkey flex that you're just goated at snake, huh?

This is the highest quality coding channel I have ever stumbled upon. I will be making full use of the content he is providing. Hopefully he has some more advanced content too.

There is a small bug in this Programm, if the snake goes to the right, and you quickly press down and left. The snake would just bite in itself bc the head turns right into the snake instead of moving down and then left

You create some of the best java tutorials I've ever come across thank you so much :)

Great tutorial. Like the way you code, you should make a tutorial about how we should build up a project and why. Pro tip: Work on the titles, and editing -> Your channel deserved to be much bigger

I have completed this project. It was amazing. Give us more project like this.

My program is running till 15:45 .I had created that panel but after that its is not showing any grid, apple or snake on the screen and also not showing any error in the code.

Great Tutorial. Easy to understand. I didn't play snake since 1999 on my NOKIA phone :)

You just earned yourself one more subscriber! I've ignored learning Java for many years but it's now come down to Java Or Nothing. I'm only newbie with only a handful of months learning but I'm thoroughly enjoying every minute of it, as scary as it get at times... still a long way to go & hoping learn more.

Bro casually shows us that he is a snake god

Hello! Sorry for acting like a n00b but can you please tell us how to add background music to the games? Thank you in advance. Keep up the good work. EDIT: I did my research and figured out.

good job bro! as a programmer in other languages, this helped me learn the basic syntax of java.

Amazing tutorial. Not just writing code in hypersonic speed but actually explaining it and have fun. Thanks a lot and please keep up the great Java videos!

Everything was so easy to understand and remake except that high score at the end!

00:03 Creating a snake game using Java 03:36 Setting up the game frame and necessary methods 08:15 Initializing game variables and arrays for the snake game. 12:00 Initializing game panel with timer and random class instance 15:39 Creating a grid for visualization 19:04 Creating the move method for the snake game. 22:08 Shifting coordinates and changing snake direction 25:28 Setting the color and implementing movement for the snake's body 29:06 Checking for snake collision with borders and controlling the snake's movement. 32:58 Updating snake position and increasing body parts 36:42 Placing game over and score display on the screen 39:59 Using random colors to create a multicolored snake

I have been learnt html css javascript and java by watching your video. i have much respect for you. thank you very much!!

This is a full tutorial to my school exercise lol. But I already finished it unfortunately

yeah,the color change is pretty cool,makes the game to the next level,you are a natural.

Thanks for the vid, created the game successfully although I am confused about a lot of things since plenty of new stuff was introduced here lol, guess im better off heading to your earlier guides before doing any more of these :D

This video was fabulous, a simple and very detailed lesson, however I would like to know how I could do to make a little system that resets the game, in a KeyPresser, I tried several ways and none worked as expected, I don't care idea how to reset snake pro values ​​0, 0 again. Could you please advise me on how to do this?

Thank you for the tutorial. Can you or anyone else please explain how x[] and y[] array are getting initial values, i.e how it get to know the coordiates?

Im trying to learn JAVA and this video makes me easy to learn. thank you so much. i wanna do more function in this project that i wanna add button like restarting button when game is over can u teach me how can i do?

I could never thank you enough! I learned a lot! Thank you so much.

amazing code with simplified understanding thanks buddy

can i run this code in visual studio code

Tip: if your keyboard doesn't have arrow keys like mine, instead of using KeyEvent.VK_LEFT, RIGHT, etc, you can use KeyEvent.VK_A, where VK_A = A key, VK_B = B key, etc. I used the WASD keys.

This seriously reminds me of the meme "Do you ever look at someone and wonder... What is going ON inside their head??"

This was fun. I'm wondering if it would be easier to make Apple and Snake classes and if so was that idea opted to make the code more easier to read for new coder?

Big Fan of you bro. Make these games more. A new subscriber ❤️ is here.

This was extremely helpful and the first tutorial that actually helped me. Thank you so much

Really good Snake game tutorial, now I'll build my own snake game like this one and add some of my own functionality such as giving the player 3 lives and adding menu bar so they can restart the game without having to close and again run the program.

What eclipse theme are you using? Btw really nice explanation 🔥👍

That was super fun to watch! GUI is an absolute nightmare to me but definitely will try this.

Your tutorials are amazing, but I’m having an issue, when I run the program nothing appears, how can I solve this?

To shift all lignes or format them in the right tab select all (Ctrl + A) then use the eclipse shortcut (Ctrl + I) or (Ctrl + Shift + I), and for organizing imports use this shortcut (Ctrl +Shift + O)

Hello ! Thanks for the great Video ! Just one thing that didn't work for me and that, when I wrote the lines and created the Apple .. nothing showed up on the screen and it remained black .. nothing is added at all ! How to fix this ?

How to implement a restart game method?

First of all I really loved your tutorial! You've made OOP look very simple. However I encountered a problem within this game when I wrote in C for just console. In your code you just check if the head coordinate of the snake matches that of the apple and if it is true the coordinates of the apple exist anywhere outside of the head. Yet as I clearly notice at 40:51 the apple doesn't show up in the canvas, which means that the apple is inside the snake's body. Your code doesn't check if the apple's coordinates match the coordinates of the body hence causing the apple to appear inside the body. So the same problem bothered me in C too and I tried to write an algorithm to figure it out. Once I'm sure my algorithm works properly, I'll post it here. Hope I didn't miss anything in the algorithm. Keep doing this great job bro. Thank you a lot. Loved it!

nice, found my weekend project

Beautifully concise and easy to follow. Thanks for this! SUBBED!!

Lovely. I was excited for this one since early on on the playlist and its great. Thats an interesting way of setting a 2d grid of blocks or places that the sprites can be placed in. I was wondering about making a gui library and a physics or game engine tho ... despite being a beginner lol reaching for the unreachable i guess ... but i learned that problems are actually good in coding because by the time you solve the issues, you understand the reasons behind it

A good channel with good English and gives source code in the comments. Am I dreaming?!?!

Good to know java still exists

Really struggling lately. I wish I knew how to even think of what I would need when creating a simple game like this. I'm starting to feel like a hopeless idiot.

Thanks. I coded along as a new learner. Your explanations were top notch!

Above everything else, the last game play was so satisfying !

thank you! so brief and interesting!

Great to get on board when I am a student and this has definitely helped me out with the methods and supers. Thanks Bro!

I like that this isn't one of those videos where they explain what a variable is every time

So I'm learning Java for the first time, and I was curious, what calls the draw and paintComponent methods? is it that the JPanel finds them automatically and calls them from its class?

Bro Really Fantastic. I don't believe do it myself !!! Thank you so much. Hope Android course

this is bringing me back to why i wanted to learn computer science

There's a bug in the checkCollision() method for right border and bottom border that lets you go through the screen that can be solved by adding an " = " after ">" sign or by substracting 1 "UNIT_SIZE": 1. By adding "=" //Checks if head touches right border. if (x[0] >= SCREEN_WIDTH) { running = false; //Checks if head touches bottom border. if (y[0] >= SCREEN_HEIGHT){ running = false; 2. By substracting "UNIT_SIZE" //Checks if head touches right border. if (x[0] > SCREEN_WIDTH - UNIT_SIZE) { running = false; //Checks if head touches bottom border. if (y[0] > SCREEN_HEIGHT - UNIT_SIZE){ running = false;

Thankyou bro.I've never coded in Java before but watching this helped me understand and learn a lot. You've earned a sub. Keep it up and thanks a lot again

Thank you so much for posting this tutorial. I learned a lot typing out the code for this game in Apache NetBeans 12.6 IDE. The only malfunction I came across occurs if, for example, the snake is going downward with its head not near any of its body "segments" (except "segment" # 1 of course) or, for the sake of clarity, with its entire body vertical in the game window and I rapidly press the left arrow followed by the up arrow, the game is over as the snake's head winds up colliding with its first body "segment". The snake's head doesn't make it one UNIT_SIZE distance to the left since the "up" directional change command is being issued so quickly right after the "left" directional change command. And, since the snake is technically not going downward anymore, it is allowed to move upward and thus end up colliding with itself (its first body "segment"). Apparently, the snake's directional changes are being processed faster than the changes to the x and y coordinates of all its body parts when the directional keys are pressed in rapid succession. Is there a remedy for this?

This is really a good game... where I learned lot of graphics... Thank you buddy......

Bro Code is the type of dude who develops a game just to play

This was very nice and fun programming on a rainy day - I modified your game where the snake will change color each time it eats an apple :)

I found the best Coding teacher, I'm sure that I will master java soon

Great video. This could be a series and you can perfect the game in each episode. e.g. Would be cool to have a tutorial on howt ot store the top 10 scores and input username once you hit top10.

Why do we need the move() in ActionPerformed (instead of within another method) when we already have the timer and loops to make it iterative?? I know it's critical but there was no explanation

What a GIGA CHAD, it's easy to understand!

This tutorial was really good. even though I did not understand much, I followed it and understood then basic concepts! I just wonder... HOW DO YOU KNOW all the steps for making a game like this? I wonder

damn bro code is really good at snake

I learnt so much from this. Thanks so much!!

An excellent example for game's developers. And I really like it.

Bro code is truly my savior

like, comment, subscribed, now im ready to watch this guide

That's why programming is Fun