Drag and Drop for Tree in a Table

Question

I have placed a tree in a table using the example provided in an article "Creating TreeTables in Swing" in java.sun.com. But , instead of using the FileSystem data with which the example was explained , i have passed my own data...Then i created a panel wherein i placed two of these tables with buttons in between.
The buttons are meant for data transfer....The problem is if i implement Drag and Drop support for the TreeTable the Tree embedded in the Table doesn't expand and collapsing properly....
Can there be any reason that if a tree is placed in a Jtable and the drag and drop is enabled using setDragEnabled(true) will it effect the normal behaviour

Answer 1

You can implement DropTargetListener, DragSourceListener, DragGestureListener like the following:
public class MyTree extends JTree
            implements DropTargetListener, DragSourceListener, DragGestureListener {
    public void dragEnter (DropTargetDragEvent event) {
        event.acceptDrag (DnDConstants.ACTION_MOVE);
    public void dragExit (DropTargetEvent event) {
        //System.out.println( "dragExit");
    public void dragOver (DropTargetDragEvent event) {
    public void drop (DropTargetDropEvent event) {
        // place your code for action after drop
    public void dropActionChanged ( DropTargetDragEvent event ) {
    public void dragGestureRecognized( DragGestureEvent event) {
    public void dragDropEnd (DragSourceDropEvent event) {  
    public void dragEnter (DragSourceDragEvent event) {
        //System.out.println( " dragEnter");
    public void dragExit (DragSourceEvent event) {
        //System.out.println( "dragExit");
    public void dragOver (DragSourceDragEvent event) {
        //System.out.println( "dragExit");
    public void dropActionChanged ( DragSourceDragEvent event) {
        //System.out.println( "dropActionChanged");
}Hope this can help.