yes tx. just threw all that in because was confusing

how would i point to a directory:

String path = sketchPath;
className = sketchPath+"/some_directory/" + _p;

???

sorry, maybe i'm being dumb. what does the "$" mean in:
className = this.getClass().getName() + "$c" + _p;

when i try:
String spath = savePath;

i get error: "cannot find anything named savePath";

when i try className = sketchPath+"/c" + _p;
or className = sketchPath+"$c" + _p;
doesn't work.

basically i want to read a folder or subfolders.
so can get the list of directories, but not point to the actual class file:

File[] files = listFiles(path);
 for (int i = 0; i < files.length; i++) {
     f = files[i];  
   if ( f.isDirectory()) {  
   println("Name: " + f.getName());
   println("-----------------------");
  }
 }


but at the moment can;t work out how to even point there manually.

for the life of me i can't figure this out.
works fine for images, etc. but can't figure out loading the class

any other guiders appreciated.

regards

sorry for the very late reply - been sucked into "real work"  :-/.

this is a bit beyond my programming abilities. i've left the code messy, because i don't really understand what's happening in the code.

here is the basic class.
it works fine if the external classes are all in the same directory as the main .pde holder.

but as soon as i move them into their own directories - i can't seem to target them. i've tried all the combinations at the top of the class, classname = ....


Code:

public void loadInClass(String _p){
  println("class: " + _p); 
  className = this.getClass().getName() + "$" + _p;
  className = this.getClass().getName() +path+ "/$" + _p;
  className = path + "/" + _p + "/$" + _p;
  className = path + "/" + _p + "/$" + _p;
 println("class: " + className); 
 
  try
  { cl = Class.forName(className); }
  catch (ClassNotFoundException e) { 
    // println("Unknown class: " + className); 
}
   currentClass = null;
  if (cl != null) {
    try {
	// Alas, this doesn't work for inner classes!
	// Will work if you put classes in separate .java files
	currentClass = (gCore) cl.newInstance();
    }
    catch (InstantiationException e){
	//println("Cannot create an instance of " + className);
    }
    catch (IllegalAccessException e) {
	println("Cannot access " + className + ": " + e.getMessage());
    }
    // Internet to the rescue!
    try
    {
	// Get the constructor(s)
	java.lang.reflect.Constructor[] ctors = cl.getDeclaredConstructors();
	// Create an instance with the parent object as parameter (needed for inner classes)
	currentClass = (gCore) ctors[0].newInstance(new Object[] { this });
 
  }
    catch (InstantiationException e) {
	//println("Cannot create an instance of " + className);
    }
    catch (IllegalAccessException e) {
	//println("Cannot access " + className + ": " + e.getMessage());
    }
    catch (Exception e) // Lot of stuff can go wrong...
    {
	e.printStackTrace();
    }
  }
}

 

here the entire project:

www.radarboy.com/george/dynamic_class_loading.zip


any pointers much appreciated.

When the PDE loads your sketch, the problem is obvious: you see none of c1, c2, c3 in the tabs. Processing just ignore there are classes in sub-folders, so it can't compile them. Since these are not compiled, you cannot load them.

Not sure how to solve that. Either you bring the classes back to top level, or you make these as .java classes and try to compile them separately with javac...

yea i noticed that. even if you move the classes back into the top level directory you need to close the sketch/processing and restart for them to be seen.

so you saying there is no way to leave them as .pde files and put them in subdirectories without making them .java files? do you know what the IDE does on sketch startup? if the IDE is written in java then surely there a way to refresh this?

cheers