Drag & Drop a JButton -- URGENT

Question

I have two Jpanels, one panel contains my set of JButtons and i have to be able drag and place them on the second panel. how much ever i try am unable to do this. I need some help with with what are the flavors i should set. please could someone tell me as soon as possible.
Thank u

Answer 1

Hi
This will Drag the Text 'drag this' from one of the buttons to the panels. not simple but i am sure it will give you the idea.
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.math.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.io.*;
public class TstDrag extends JFrame
     pan   pan1 = new pan();
     pan   pan2 = new pan();
     but   but1 = new but("button 1");
     but   but2 = new but("button 2");
public TstDrag() 
     getContentPane().setLayout(null);
     setBounds(1,1,600,500);
     addWindowListener(new WindowAdapter()
    {     public void windowClosing(WindowEvent ev)
          {     dispose();
               System.exit(0);}});
     pan1.setBackground(Color.red);
     pan1.setBounds(1,1,500,200);
     pan2.setBackground(Color.blue);
     pan2.setBounds(1,210,500,200);
     but1.setBounds(10,10,60,20);
     but1.setBounds(10,40,60,20);
     pan1.add(but1);
     pan1.add(but2);
     getContentPane().add(pan1);
     getContentPane().add(pan2);
     setVisible(true);
public class pan extends JPanel implements DropTargetListener
     DropTarget dropT;  
public pan() 
     super();
     dropT = new DropTarget(this,this);
public void dragEnter (DropTargetDragEvent e) 
        System.out.println("dragEnter  my drop");
     e.acceptDrag(e.getDropAction());
public void dragExit (DropTargetEvent e)
//        System.out.println("dragExit   drop");
public void     dragOver(DropTargetDragEvent e)
public void drop(DropTargetDropEvent e)
          System.out.println( "droped");
     try
          Transferable trans = e.getTransferable();     
          DataFlavor[] dfs   = trans.getTransferDataFlavors();
          String s = (String)trans.getTransferData(dfs[0]);   // this is it
          e.acceptDrop(e.getDropAction());
          e.getDropTargetContext().dropComplete(true);
     catch (IOException exception)
            exception.printStackTrace();
            System.err.println( "Exception" + exception.getMessage());
            e.rejectDrop();
     catch (UnsupportedFlavorException ufException )
             ufException.printStackTrace();
             System.err.println( "Exception" + ufException.getMessage());
             e.rejectDrop();
public void dropActionChanged(DropTargetDragEvent e )
public class but extends JButton implements DragSourceListener,
                                                      DragGestureListener
     DragSource dragS = null;
public but(String s) 
     super(s);
     dragS = new DragSource();
     dragS.createDefaultDragGestureRecognizer(this,DnDConstants.ACTION_COPY_OR_MOVE,this);
public void dragGestureRecognized( DragGestureEvent e)
     System.out.println( " dragStart");
     StringSelection text = new StringSelection("drag this");
    dragS.startDrag(e, DragSource.DefaultMoveDrop, text, this);
public void dragDropEnd (DragSourceDropEvent e)
//       System.out.println( " dragEND");
public void dragEnter (DragSourceDragEvent e)
//          System.out.println( " dragEnter");
public void dragExit (DragSourceEvent et)
//          System.out.println( "dragExit");
public void dragOver (DragSourceDragEvent e)
//          System.out.println( "dragExit");
public void dropActionChanged ( DragSourceDragEvent e)
//          System.out.println( "dropActionChanged");
public static void main (String[] args) throws InterruptedException
     TstDrag fr = new TstDrag();
}