You only have a single vert PVector in your class. So it will always be one single point. Either have an array/arrayList of all the PVectors or create a method in your Object class that returns a specific vertex from the OBJModel directly (in the same way you get a specific vertex inside the for loop).

Note that Processing 2.0 has a PShape class that can load OBJ files directly without the need for a contributed library.

I'm a newbie so how do I create array/arrayList of all PVectors or  create a method in your Object class that returns a specific vertex from the OBJModel directly? I've try making the method but it is not working.. i'm not sure where my mistake is

For example like this...

Code Example

1.   PVector get(int index) {
2.     if (index < 0 || index > model.getVertexCount()-1) {
3.       println("Index out of range");
4.       return null;
5.     } else {
6.       return model.getVertex(index);
7.     }
8.   }

Or to get the whole list like this...

Code Example

1.   ArrayList <PVector> getVertices() {
2.     ArrayList <PVector> list = new ArrayList <PVector> ();
3.     for (int i=0; i<model.getVertexCount(); i++) {
4.       list.add(model.getVertex(i));
5.     }
6.     return list;
7.   }

I've try both codes and it works. I even try for object with very high number of vertices and the response time for print function (for testing) is slower and freeze the console (if vertices number > 10000). So, for object with very high number of vertices, is there any way to improve the response time and prevent freeze aside from calling it from within the class?

Don't use println() for that purpose. If you have over 10.000 objects it's pointless to print all those lines in the console and it will indeed freeze. The console doesn't even display that many lines. If you want the information in a text file, then save to a text file. If you want some kind of debug information, try to print the information at a more aggregated level.