import java.awt.dnd.*; 
import java.awt.datatransfer.*; 
 
PFont	font;
String	filename = "Drag & Drop something!";

void setup(){
	size(400, 200);
	
	font	= loadFont("Standard0756-8.vlw");
}

void draw(){
	background(10);
	fill(255);
	textFont(font);
	textAlign(CENTER, CENTER);
	text(filename, width/2, height/2);
}

void loadFile(String filename){
	this.filename	= filename;
	println(filename);
}

DropTarget dt = new DropTarget(this, new DropTargetListener() { 
  public void dragEnter(DropTargetDragEvent event) { 
    // debug messages for diagnostics 
    //System.out.println("dragEnter " + event); 
    event.acceptDrag(DnDConstants.ACTION_COPY); 
  } 
 
  public void dragExit(DropTargetEvent event) { 
    //System.out.println("dragExit " + event); 
  } 
 
  public void dragOver(DropTargetDragEvent event) { 
    //System.out.println("dragOver " + event); 
    event.acceptDrag(DnDConstants.ACTION_COPY); 
  } 
 
  public void dropActionChanged(DropTargetDragEvent event) { 
    //System.out.println("dropActionChanged " + event); 
  } 
 
  public void drop(DropTargetDropEvent event) { 
    //System.out.println("drop " + event); 
    event.acceptDrop(DnDConstants.ACTION_COPY); 
 
    Transferable transferable = event.getTransferable(); 
    DataFlavor flavors[] = transferable.getTransferDataFlavors(); 
    int successful = 0; 
 
    for (int i = 0; i < flavors.length; i++) { 
 try { 
   Object stuff = transferable.getTransferData(flavors[i]); 
   if (!(stuff instanceof java.util.List)) continue; 
   java.util.List list = (java.util.List) stuff; 
 
   for (int j = 0; j < list.size(); j++) { 
     Object item = list.get(j); 
     if (item instanceof File) { 
  File file = (File) item; 
 
       
  String filename = file.getPath(); 
  	loadFile(filename); 
     } 
   } 
 
 }  
 catch (Exception e) { 
   e.printStackTrace(); 
 } 
    } 
  } 
} 
);