CODEWITHSUNDEEP
javaoopappletawtpaint
Tux9000
Tux9000

Reputation: 155

what does the paint method? how does it work?

what does the paint method do after receiving the object created from the Graphics class as a parameter?

as for example in this code:

public class unaClase extends Applet{
    public void paint(Graphics g){
        g.drawRect(0, 0, 400, 200);
    }
}

try to trace the source to see its code and thus be able to understand what it does, but it does not show me anything

enter image description here

What I want is to know what makes paint with the parameter it receives?

PD: I know that apple is dead, I just want to understand well what is happening, what it does

Upvotes: 0

Views: 973

Answers (1)

WJS
WJS

Reputation: 40034

when I use the paint method (as in the example code), I'm technically overwriting it (unless I had used super.paint ...), and then its code would be the one I just defined; so my question is, how does paint know what to do with the parameter (Graphics) that I'm going through?

The actual term is overriding. And the first thing you would normally do is call super.paint() to the parent version. Graphics (or Graphics2D which has additional methods but needs to be cast) allows one to use those methods to draw, rotate, and in general manipulate pixels. It is handled internally using native method calls that are supported by the OS.

If you are going to paint you should do it in a JPanel and override paintComponent(Graphics g). Check out the tutorials on painting at https://docs.oracle.com/javase/tutorial/index.html

Upvotes: 1

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