this is the code - don't mind the commentaries

Code:

import processing.core.*;
import processing.pdf.*;
//import prosvg.*;
import java.util.Random;

public class Main extends PApplet{

    @Override
    public void setup() {
    size(400, 400);
    background(255);
    noStroke();
    smooth();
    beginRecord(PDF, "pdf_export_test.pdf");
    frameRate(25);
    noLoop();
    
  }


  
    @Override
  public void draw()
{
//  if(savePDF == true)
//  {
//    beginRecord(PDF, "PDF_test_" + frameCount + ".pdf");
//  }
  noStroke();
  Random r = new Random();
  int col1 = r.nextInt(255);
  int col2 = r.nextInt(255);
  int col3 = r.nextInt(255);
  int x = r.nextInt(width);
  int y = r.nextInt(height);
  int radius1 = r.nextInt(250);
  int radius2 = r.nextInt(250);
  fill(col1, col2, col3, 50);
  ellipse(x, y, radius1, radius2);
//if(savePDF == true)
//{
//  endRecord();
// }
  //endRecord();
}


    /**
     * @param args the command line arguments
     */
   public static void main(String args[]) {
    PApplet.main(new String[] { "--present", "Main" });
  }
    @Override
    public void mousePressed() {
  loop();
  }

    @Override
public void mouseReleased() {
  noLoop();
  }
    @Override
 public void keyPressed() {
   if(key == ' ') {endRecord();
   //saveFrame("svg_export_test.svg");
   exit();}
}

}
 

Beware where you post your messages, thanks.

Look at the installation directory where you have installed Processing.
You found core.jar in the 'lib' folder, you will find the pdf.jar (and its companion itext.jar) in the 'libraries' folder just next to the 'lib' one.

There is no .pdf (and it wouldn't be useful) in the 'libraries' folder.
Did you included itext.jar as well, as suggested above? (in a perhaps too elliptic way)

I am still having some integration problems. yes i managed to make it run independently , but when i want it to run from an event i receive an exception.
The modification from the previous code i posted, despite having a main in the class i created the cunstructor to activate the PApplet
Code:

public Vizual() {
PApplet.main(new String[] { "--present", "Vizual" });
}
    @Override
    public void mousePressed() {
  loop();
  }
 

In my main application class i'm trying to get it start from an menu event:
Code:

if (command.equals(" Generate visualization ")) myviz = new Vizual();
 

Running the project, i recieve this when i try to "generate the visualization" from my menu .... and it crashes.

Code:

java.lang.ClassNotFoundException: Vizual
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at processing.core.PApplet.main(PApplet.java:6522)
        at sphynxer.Vizual.<init>(Vizual.java:65)

 

And it's strange because i have the class "Vizual" defined
Code:

public class Vizual extends PApplet{

    @Override
    public void setup() {
    size(400, 400, "prosvg.SVGKdl");
    background(255);
    noStroke();
    smooth();
    beginRecord(PDF, "pdf_export_test.pdf");
 

Any suggestions?