Tutorial paint dots(simple version)

**Turk4n** · 06-19-2008, 08:19 AM

After seen Johns how to use the java paint function. I thought I could share my tutorial how to make one.

So lets begin...

Code:

import java.awt.*;

  public class prickar extends java.applet.Applet {

private int mouseX, mouseY;
     private boolean mouseclicked = false;//statment of starting the app

 	  public void init()  {
 		setBackground (Color.white);//Our background for the screen
 	  }

So lets fix the false statment(We had to do this due to you starting it with a click it will automatically enter a dot on the screen...

Code:

public boolean mouseDown (Event e, int x, int y ) {//applying the mouse when in use
        mouseX=x; mouseY=y;//coordinations
        mouseclicked = true;//Here is our old false statment fixed when we really want to paint.
        repaint();//Allowing use to paint how many times we want
        return true;//return it to the screen "true"
    }

Lets continue...

Code:

public void paint ( Graphics g ) {//To enable painting
        g.setColor (Color.black);//paint color
        if (mouseclicked) {//if you click with whatever mouse button
            g.fillOval (mouseX, mouseY, 12, 12);//The screen will be painted with a ovaldot 12x12 in size
            mouseclicked = false;//This means you havn't clicked it will be false and screen won't be "colored"
        }
    }

Last part...

Code:

public void  update  ( Graphics g )  {//Updating your screen so it will be active and the painted things won't disappear
		paint (g);
	}
}

Whole code

Code:

import java.awt.*;

  public class dots extends java.applet.Applet {

	private int mouseX, mouseY;
     private boolean mouseclicked = false;

 	  public void init()  {
 		setBackground (Color.white);
 	  }

    public boolean mouseDown (Event e, int x, int y ) {
        mouseX=x; mouseY=y;
        mouseclicked = true;
        repaint();
        return true;
    }

     public void paint ( Graphics g ) {
        g.setColor (Color.black);
        if (mouseclicked) {
            g.fillOval (mouseX, mouseY, 12, 12);
            mouseclicked = false;
        }
    }

    public void  update  ( Graphics g )  {
		paint (g);
	}
}

So thats my tutorial, thanks John for learing me