Java Tutorial 50 (GUI) - How to Use the Paint Method with Canvas

In this video, you will also learn how to use the paint method in a proper way.

[matrixxART]

I don't get when paint is called. How can I control when things are painted?

[seebobeebo]

what about adding a key listener to it to move the shapes is that possible?

[sallajeclow]

John you rock
I Wonder if you are teacher. You have explained it exceptionally well.
Great.vid
.thanx

[dianarune]

Sorry, is it good practice to put the graphics in a separate class to the main user interface?
I'd like to put quite a few 3D graphics in my interface but I was wondering about separating them from the button functions, etc.. Or is this not necessary? :3

[goodknight]

Much appreciated, I didn't really understand this part in class and this made for an easy study of the topic for my Final.

[mab]

Nice tutorial. I know this is an old video but do you know how to make a rectangle with columns of different colors instead of just one solid color? Thanks

[pizzel]

hey man thankyou for your great tutorials....i use them alot. been of great help

[shaniavictor]

i learnt so much for the past few days this has been a great experience with you John :* thanks very much :*

[sallajeclow]

GREAT tutorial
Many thanks
..kindly do some more if you can.

[Brandon]

Just wondering but why do you have the constructor "public static void main (String [] args)" outside of your "main" class?

[cravingbulletsphan]

Hey can you do a collision with image or shapes?

[javster]

Do you do OpenGl? Ive been trhing to use it but it hasn't worked

[cameronl.]

mab4110 You could just fill progressively smaller rectangles within the big one to make it seem like one with multiple columns, such as:

g.setColor(Color.red);
g.fillRect(10, 10, 100, 50);
g.setColor(Color.orange);
g.fillRect(30, 10, 80, 50);
g.setColor(Color.yellow);
g.fillRect(50, 10, 60, 50);
g.setColor(Color.blue);
g.fillRect(70, 10, 40, 50);
g.setColor(Color.magenta);
g.fillRect(90, 10, 20, 50);

Even though this is late, I hope it helps.

[xXNiftyLlamaXx]

You should teach me how to draw individual pixels in Java .nc.

[JohnGizdich]

haha okay, okay, I will! What should I go over in my next tutorial?

[BigJDawg]

This tutorial was good as I am just beginning Java. 1 piece of advice going forward... when I was learning Python I found one problem with tutorials. Everything focus was on what and not why. If you show us how to create a method, we would like to know the how, but also the why and when we should create a method. (Method was an example, the same applies to anything your trying to teach. Tell us why we want to do this, give an example of an actual use for it.)
That tiny overlooked thought is often the difference between something making sense and sinking in or leaving us scratching our heads

[kotliikkotliicek]

Please how can I create BufferStrategy in Canvas? thanks :)

[losonnyboy]

I like your videos man. But maybe the canvas object is different.

Where exactly is the  paint method invoked? From the video i can see you are overriding the method but where are the methods being called exactly?

Do you have a Graphics variable you are passing into the parameter for the paint method?

[StefanBanu]

can you make a series for simple games? like space invaders, snake, brick ball game

can you please?

[ayeshabariring]

how can i change color during run time?