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
I teach computer science at a high school. Your video is outstanding. I have embedded it in our online curriculum and I use it as the Do-Now introduction for 2-D arrays. Thank you so much for your commitment and efforts in helping make programming in Java accessible to all students.
I just started my first semester at ASU in August and we are getting into 2D arrays right now. I found your channel a couple days ago, and I dig it. I can really relate to your story. I was feeling the same way before I found this channel and it really boosted my confidence. Thanks a lot man for your honesty and for the lessons. I hope the channel takes off for you.
I was a person that was interested in coding and then actually going to school for it kinda took the magic from it, people like you remind me why I got into it in the first place. Please never stop making content, your personality and vids are gonna be huge. Thanks for the great vid :)
For sure, I know what you mean. We had a programming class in highschool and I was initially interested, it was super basic stuff off memory HTML etc. However I learnt a grand total of 0 from the class. The teacher each lesson just gave us a powerpoint to work through and sat on his laptop the whole lesson and he never said anything and never looked up from the laptop. It is partially my fault as I could have very well learned something from the powerpoints but being a kid of course if the teacher is being lazy and the rest of the class is just playing games, naturally I joined along lol. Its a shame really. Luckily Alex does a great job I've learnt more from him than I ever learned off my IPT teacher lol.
It's so ironic how you mention several times how teachers and TA's made things more confusing for you, because it's exactly like that for me. I learned 98% of all my java knowledge through you and Michael Fudge :). Thanks Alex! Btw I had a theater project using 2d arrays, very cool!
I must say that your explanations are making everything so easy. thank you very much for this channel! since I stumbled upon it, every subject that I need to learn to my course at the university I'm learning from here instead of trying to understand the poor explanation of my professors. Every friend of mine who's struggling to understand a subject I refer to your channel and they all praise you. Greetings from Israel!
Trying to survive my 8 week college course in Java and you made it a little bit easier. This week is Arrays and i might use some of this knowledge, thanks alot.
Alex, I wish you were my instructor. I am a beginner, I am so confused in my class. Glad I found you- you break things down and make it so much easier to understand. I like the way you pace teaching. Great job!
Thanks again man, this is so damn good to understand! The longer I learn coding the more I understand that the only reason why people never learn to code or just quit it pretty fast is not because coding is hard to learn, it's because the tutorials are bad! I often have to writ stuff down to actually understand what's going on and what specific code does, and when I understand what it does I like to explain it to my self in a metaphoric way. Using this method I can strengthen my knowledge and put the new stuff deeper in my memories.
Yes I have just finished the second one right now at 3:30am and starting the last one as I have to read a file and print out the results in a 2D array... Thank you Lee you have helped out so much. 😃.
i got a java exam tomorrow and its about 2d and 1d arrays and abstract interface this video really helps to solidify my understanding thx i am a new fan and subscriber
The AP exam is tomorrow and I decided to learn java from 0 because I had no time, nor the money to take a course for a year. In fact I took 6 exams without the courses and tomorrow is my last exam, csa. So I am really grateful: THANK U! Greetings from Colombia. Sorry for my english, I really hope it was better in my essays; if not I'm screwed hahahaha
I have a project where I have to code a game of connect four using 2D arrays. At first I was stumped, but now I think I have an idea of how to do it once I saw your first four loop and realized that's how you get the diagonal!
public class AlexIsTheBest{ public static void main(String[] args) { boolean cannotThankYouEnough = true;
while (cannotThankYouEnough){ System.out.println("Thank you!"); } //Yes, I know I did not stop the while-loop, but that is because I cannot thank him enough ;) } }
Thanks Alex. About 2 years ago I first learned this at uni and it was so hard to get it. It made me feel so depressed. But now with your video I can understand it. Thanks again Alex. You are awesome!
took me the longest time to notice you're typing on an external keyboard on top of your mac :'D thanks for all these lessons man! you're a great teacher!
instructors explaining 2 hours and my mind confused , Alex explaining in 8 min i say 1000000 WOW :) thanks Alex keep moving with other languages it's so much fun
In my second semester, it hasn't started yet but god your videos are so helpful. I've already understood all the concepts and i'm gonna ace this semester too thanks to you. Keep up the amazing work !
I was going through my old yahoo emails from 2012 and I saw that you had sent me an email asking me to check out your channel, waffle gaming. back then i had subbed and i've lost the channel when i decided to migrate to Gmail. Here i am now with a different email and even my own channel. its awesome to see that you've changed so much my dude.
RodCaster Gaming wow that’s so crazy! I’ll never forget all the great support from waffle gaming. And we’re still gaming :) thank you for stopping by again and it’s great to see your history with us. Welcome back :)
Awesome , currently working on a project where I need to use 5 different users to login then logout then to the next user . All different users . Your Help is always appreciated .
This is really helpful, and I really like your video layout. Your mention to like the video is subtle, and the keyboard and music is a very nice touch.
Glade to have such an excellent youtuber making this kind of videos these are very very very useful for So many people Continue like this all the best 👍
Hey man I really like your content and I love how you explained 2d array's in this video, but do you have to have that music playing in the background its kind of annoying. Still though this really helped me in my comp sci class where my teacher couldn't explain this for the life of him so thanks.
1 request🙋♂ Could you implement a linked list using OOP concepts And one operation per video 1.Add to the end 2.Insert at head 3.Insert in between nodes 4.Remove from end 5.Remove from head 6.Remove from between 7.Display the items
Step 1. The program should ask the user to enter what row and seat number to reserve. Indicate an ‘X’ mark if the seat is reserved. Step 2. Repeat Step 1; the program will stop until the user enters a negative number.
I'm in accelerated OOP class for freshman year and working with arrays as of now. I'm doing something involving the Game of Life code and programming it into java, but this time us individually have to write the helper class code for the grid that writes the pixels, and checks if the pixels have already been printed, ecx. It's a bit confusing, but after this video, I think I have more confidence in accomplishing this assingment. I hope I can eventually. I am severrly falling behind in this class.
Hello, I do have an assignment for a 2D array, it is suppose to print two names the three columns should print the number of upper case letters, the number of second letters in the word, and the third the number of vowels in the words.
Awesome video! I am very new to java and coding for all that matter. I understand the for loops and looping through the array. With i, it is the index and going through the index of the array but towards the end of the video, you write a second for loop and use j instead and end up getting the entire array printed. How does that work? EDIT: Nvm, Watched the nested for loops vid Lol
As someone who teaches math and computer science in high school, I’m almost certain that 2D arrays stem from the properties of matrices, a mathematical structure that many of us learn a little bit of in Algebra 2 or Precalculus. This is why I often encourage any students taking CS classes that they take Algebra 2 as a co-requisite, at a minimum.
Hi! I just wanna say your programming tutorials are really great. It helped me a lot. Thank you. Anyway, if you ever have time to make a tutorial about Java and Database connection, that would be really awesome. Thanks again.
If you name your variables in the for loops like 'row' and 'column', its gonna be easier for people to understand what is happening. Also there is so much more to know about 2d arrays so that you can solve problems, I think its impossible to cover in a 9 minute video..
Hello, want to say you are a great teacher. I'd like to suggest turning off the music in the background since it's distracting for us ADHD folks as it's difficult for us to channel our focus on the concepts you are teaching. Keep up the great work! PS: Thanks for teaching me the OOPS concepts in such an easy to understand way. Really helped my interview.
Need help and guidance with doing the coding for this: Create a two-dimensional array of type double to contain the three different SD Marks (JD521, PRG521, and IP521) for six different students. A single array of type String must be used to store the student names (Maxwell, Carl, Gerhard, Paul, James, and Cena). Allow a user to enter in a number, ranging from 1 to 6, which will represent the student position in the table MCSD max and present the marks for each respecting module. The program can only stop when the user enter a number greater than 6. Printout the student name including the JD521, PRG521, and IP521 max, the total of marks and the average of all marks. Use a condition statement to decide that the student has passed or not (Pass rate is 70).
But you can't use the fixed value everytime in loop like 3 some times arrays have different values like arr[ 0] have 3 values and arr[1] have 4 values are[2] have 2 values now you have to use for(j=0;j
![Create Matrix In Java || How to iterate a Matrix [2D Array]](/img/1.gif)
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
Most underrated RUclipsr I have ever found
absolutely right.
100th like
Well too bad this guy only does flips now and dont code anymore 🤦♂️
Facts!
I teach computer science at a high school. Your video is outstanding. I have embedded it in our online curriculum and I use it as the Do-Now introduction for 2-D arrays. Thank you so much for your commitment and efforts in helping make programming in Java accessible to all students.
I just started my first semester at ASU in August and we are getting into 2D arrays right now. I found your channel a couple days ago, and I dig it. I can really relate to your story. I was feeling the same way before I found this channel and it really boosted my confidence. Thanks a lot man for your honesty and for the lessons. I hope the channel takes off for you.
Hi Snowden, i am also an ASU student. The class was CSE 110?
Best part of this was 1:41 but seriously you are saving lives here man
I was a person that was interested in coding and then actually going to school for it kinda took the magic from it, people like you remind me why I got into it in the first place. Please never stop making content, your personality and vids are gonna be huge. Thanks for the great vid :)
For sure, I know what you mean. We had a programming class in highschool and I was initially interested, it was super basic stuff off memory HTML etc. However I learnt a grand total of 0 from the class. The teacher each lesson just gave us a powerpoint to work through and sat on his laptop the whole lesson and he never said anything and never looked up from the laptop. It is partially my fault as I could have very well learned something from the powerpoints but being a kid of course if the teacher is being lazy and the rest of the class is just playing games, naturally I joined along lol. Its a shame really. Luckily Alex does a great job I've learnt more from him than I ever learned off my IPT teacher lol.
It's so ironic how you mention several times how teachers and TA's made things more confusing for you, because it's exactly like that for me. I learned 98% of all my java knowledge through you and Michael Fudge :). Thanks Alex! Btw I had a theater project using 2d arrays, very cool!
I must say that your explanations are making everything so easy.
thank you very much for this channel! since I stumbled upon it,
every subject that I need to learn to my course at the university I'm learning from here
instead of trying to understand the poor explanation of my professors.
Every friend of mine who's struggling to understand a subject I refer to your channel
and they all praise you.
Greetings from Israel!
awesome, thanks so much :)
I love how u really make these videos more understandable
Short, fun, easy to understand ur making programming more fun
Trying to survive my 8 week college course in Java and you made it a little bit easier. This week is Arrays and i might use some of this knowledge, thanks alot.
Thanks, I appreciate the large font so I can watch while exercising.
Wow 2 minutes throughout this video and I already have an understanding of this thank you for taking the time and effort to make this!
Alex, I wish you were my instructor. I am a beginner, I am so confused in my class. Glad I found you- you break things down and make it so much easier to understand. I like the way you pace teaching. Great job!
Your videos are insanely helpful , you go straight to the point and keep things as simple as they can possibly be. Thank you.
Thanks again man, this is so damn good to understand!
The longer I learn coding the more I understand that the only reason why people never learn to code or just quit it pretty fast is not because coding is hard to learn, it's because the tutorials are bad!
I often have to writ stuff down to actually understand what's going on and what specific code does, and when I understand what it does I like to explain it to my self in a metaphoric way. Using this method I can strengthen my knowledge and put the new stuff deeper in my memories.
Amazing Tutorials. Easy to understand, straight to the point, no bs theory I'm never going to use. Just perfect
Yes I have just finished the second one right now at 3:30am and starting the last one as I have to read a file and print out the results in a 2D array... Thank you Lee you have helped out so much. 😃.
i got a java exam tomorrow and its about 2d and 1d arrays and abstract interface this video really helps to solidify my understanding thx i am a new fan and subscriber
I've truly been blessed by coming across this channel. THANK YOU for making me enjoy programming way more than I did before!
The AP exam is tomorrow and I decided to learn java from 0 because I had no time, nor the money to take a course for a year. In fact I took 6 exams without the courses and tomorrow is my last exam, csa. So I am really grateful: THANK U! Greetings from Colombia. Sorry for my english, I really hope it was better in my essays; if not I'm screwed hahahaha
I have a project where I have to code a game of connect four using 2D arrays. At first I was stumped, but now I think I have an idea of how to do it once I saw your first four loop and realized that's how you get the diagonal!
public class AlexIsTheBest{
public static void main(String[] args) {
boolean cannotThankYouEnough = true;
while (cannotThankYouEnough){
System.out.println("Thank you!");
}
//Yes, I know I did not stop the while-loop, but that is because I cannot thank him enough ;)
}
}
I am so happy to find this channel. I am streesed because of my projects and exams but your explanation would help me. Thanks for amazing videos.
Thanks Alex. About 2 years ago I first learned this at uni and it was so hard to get it. It made me feel so depressed. But now with your video I can understand it. Thanks again Alex. You are awesome!
Man thanks for the videos, you have a simple and non-technical way to approach all the topics!!
Greetings from Argentina, keep up the great work!!!
Wow, I don't know why this was such a hard concept for me to grasp in class but this video just made it instantly click in my head. Thanks a lot dude.
took me the longest time to notice you're typing on an external keyboard on top of your mac :'D
thanks for all these lessons man! you're a great teacher!
Thank you for your help! This is the best recap I have received throughout my time at university!
Ive got a bad cold and my first coding assessment in two days. Thank you sir for this.
Didn't realize a screen resolution was a 2D array. Mind blown, it totally makes sense. Thank you!
Just started me Java 2 class at fiu and you saved me with learning how to work with 2d arrays
The diagonal part was so smart brooooo thank you so much!! I was stuck on printing diagonals for 1 hour !
This video made me understand how for loops and any type of an array really work together. Great video!
You speak in terms I can understand as a student.. And how it feels
instructors explaining 2 hours and my mind confused , Alex explaining in 8 min i say 1000000 WOW :) thanks Alex keep moving with other languages it's so much fun
The best channel in the world? ALEX LEE!!!!
In my second semester, it hasn't started yet but god your videos are so helpful. I've already understood all the concepts and i'm gonna ace this semester too thanks to you. Keep up the amazing work !
I was going through my old yahoo emails from 2012 and I saw that you had sent me an email asking me to check out your channel, waffle gaming. back then i had subbed and i've lost the channel when i decided to migrate to Gmail.
Here i am now with a different email and even my own channel. its awesome to see that you've changed so much my dude.
RodCaster Gaming wow that’s so crazy! I’ll never forget all the great support from waffle gaming. And we’re still gaming :) thank you for stopping by again and it’s great to see your history with us. Welcome back :)
@@alexlorenlee A great programmer and also a Gamer, all that's left is to find out you watch anime, RESPECT ALEX
I have a noob weather data 2d array project and it’s so confusing your videos help me understand a little bit more
I'm just glad I can actually take something from the video. I'm making a blind minesweeper game to help me really understand this. Thanks!
Awesome , currently working on a project where I need to use 5 different users to login then logout then to the next user . All different users . Your Help is always appreciated .
u should do a video on shifting 2d arrays, like moving them one to the left, one to the right, up and down, etc.
" 'Array' starts with 'a-row'", genius!
or X*Y, lust like your resolution on your screen. Horizontal x Vertical
Best coding tutor I've found thanks bro
All I needed was to figure out how to print the damn thing and now I know, thank you!
Man, you are good at explaining things. You would make a great teacher, if you ever decided to become one. Thanks for the tutorial!
//attributes
String Alex = "best java teacher";
This is really helpful, and I really like your video layout. Your mention to like the video is subtle, and the keyboard and music is a very nice touch.
thank you so much!! you are such a hero indeed- not all the heroes wear capes!
Glade to have such an excellent youtuber making this kind of videos these are very very very useful for So many people Continue like this all the best 👍
Hey man I really like your content and I love how you explained 2d array's in this video, but do you have to have that music playing in the background its kind of annoying. Still though this really helped me in my comp sci class where my teacher couldn't explain this for the life of him so thanks.
Thanks for this! Also, the background music was awesome and the mumbling around 5:40 was super funny lol
1 request🙋♂
Could you implement a linked list using OOP concepts
And one operation per video
1.Add to the end
2.Insert at head
3.Insert in between nodes
4.Remove from end
5.Remove from head
6.Remove from between
7.Display the items
Step 1. The program should ask the user to enter what row and seat number to reserve. Indicate
an ‘X’ mark if the seat is reserved.
Step 2. Repeat Step 1; the program will stop until the user enters a negative number.
Very nice explanation! Just a little mistake with a number inside the second array - *lotteryCard2 [2] [2], but as I said: Nice!
but why was there no compiler error? or basically, the extra row and column were empty so didn't matter?
Thanks this really helped me learn 2d Arrays!
The keyboard clacking is so satisfying
I'm in accelerated OOP class for freshman year and working with arrays as of now. I'm doing something involving the Game of Life code and programming it into java, but this time us individually have to write the helper class code for the grid that writes the pixels, and checks if the pixels have already been printed, ecx. It's a bit confusing, but after this video, I think I have more confidence in accomplishing this assingment. I hope I can eventually. I am severrly falling behind in this class.
Hello, I do have an assignment for a 2D array, it is suppose to print two names the three columns should print the number of upper case letters, the number of second letters in the word, and the third the number of vowels in the words.
Awesome video! I am very new to java and coding for all that matter. I understand the for loops and looping through the array. With i, it is the index and going through the index of the array but towards the end of the video, you write a second for loop and use j instead and end up getting the entire array printed. How does that work?
EDIT: Nvm, Watched the nested for loops vid Lol
As someone who teaches math and computer science in high school, I’m almost certain that 2D arrays stem from the properties of matrices, a mathematical structure that many of us learn a little bit of in Algebra 2 or Precalculus.
This is why I often encourage any students taking CS classes that they take Algebra 2 as a co-requisite, at a minimum.
Great video, thanks. But I have a question: how to show these numbers in a form of a table?
Manh thanks for all your Java videos Alex!
Thank you Alex. your videos are really helpful. Next month am starting my second year, am really looking forward to watching your videos
Thanks! You're great, keep up the videos! Happy Coding :D
Dimitra D thanks!
Ohhhh men you save my life!!! thankyousomuch,!! I'm from the Philippines
I really enjoy your content and attitude. You make a really good tutor!
This video induced epiphany for my assignment
Well I never hit the subscribe button as fast! Thank you
most amazzzzzzzzzzzzing teacher evvvvvvvvvvvvvvvvvvvvvverrrr
Watching your video in 2022. Incredible work. Thank you so much, and say hi Ace and Duece for me 🐶
Thank you Sir! please keep doing videos. You can help many more beginner programmers like me more power!
Hi! I just wanna say your programming tutorials are really great. It helped me a lot. Thank you. Anyway, if you ever have time to make a tutorial about Java and Database connection, that would be really awesome. Thanks again.
You explain this so much better than my teacher
Thank you. You make it so easy to understand!
Video made it much much easier to understand thank you 🙏
Good day, I want to populate a combobox from a file. How do I get a 2d array from the file?
Your channel help me a lot! cause I am new in programming worlds! Thank you so much!
Ok I knew about multidimensional arrays but that example of the screen blew my mind now I.know where it gets implemented
thank you for your claer explanation , yes tommorow i have a lap session
If you name your variables in the for loops like 'row' and 'column', its gonna be easier for people to understand what is happening. Also there is so much more to know about 2d arrays so that you can solve problems, I think its impossible to cover in a 9 minute video..
I have a rail fence cipher assignment using 2D arrays to complete. Any advice or uploads about them would be amazing. Keep up the good work
Thank you so much, Alex. I have learned so much from you.
My teacher gave me a homework on matrix but I forgot how to do them😅 so I came here and yes, it helped a lot
Hello, want to say you are a great teacher. I'd like to suggest turning off the music in the background since it's distracting for us ADHD folks as it's difficult for us to channel our focus on the concepts you are teaching. Keep up the great work!
PS: Thanks for teaching me the OOPS concepts in such an easy to understand way. Really helped my interview.
Alek, you are a blessing.
Alex I really wanna say thank you no lie
Need help and guidance with doing the coding for this: Create a two-dimensional array of type double to contain the three different SD Marks (JD521, PRG521, and IP521) for six different students. A single array of type String must be used to store the student names (Maxwell, Carl, Gerhard, Paul, James, and Cena).
Allow a user to enter in a number, ranging from 1 to 6, which will represent the student position in the table MCSD max and present the marks for each respecting module. The program can only stop when the user enter a number greater than 6.
Printout the student name including the JD521, PRG521, and IP521 max, the total of marks and the average of all marks. Use a condition statement to decide that the student has passed or not (Pass rate is 70).
I know it wont help you now anymore but at 4:50 there is a mistake in your code, there is 2 time 2/1 and not once 2/1 and 2/2
Really helpful explanation
Super great content, Alex!
Oh my goodness I understand now!!! I get it!!! I see what’s happening!!!
Can you give one example with 2D array by identifying even and odd number and calculate the sum of even and odd numbers. Thanks Alex you are the best!
your website provide great help to java beginner :) keep it rocking~~
I have an exam tomorrow on 2d arrays, arraylists, and methods, I already watched the other videos haha
thank you very much for good good goooooooood explanation forever,BEST TEACHER!!!!😊😊😊😊😊😊😀😀😀😀😀
Excellent Master in java
finally i get it
thank you, Alex
But you can't use the fixed value everytime in loop like 3 some times arrays have different values like arr[ 0] have 3 values and arr[1] have 4 values are[2] have 2 values now you have to use for(j=0;j
Alex.....You are the best.