Drag and drop according to JSE6 model

Question

How can I drag nodes from this tree into another position within the tree? I have got the "drop" code, but I don't know how to enable dragging from the JTree.
     public JTree createTree() {
          final JTree tree = new JTree();
          final DefaultTreeModel model = DefaultTree.getTree();
          tree.setModel(model);
          tree.setRootVisible(false);
          tree.setDropMode(DropMode.INSERT);
          tree.setTransferHandler(new TransferHandler() {
                * Inner DataFlavor class.
                * @author Matthijs Bierman
               DataFlavor nodeFlavor = new DataFlavor(nl.impressie.ip.tree.node.DocumentMutableTreeNode.class, "DocumentMutableTreeNode");
               public boolean canImport(TransferHandler.TransferSupport support) {
                    if (!support.isDataFlavorSupported(nodeFlavor) || !support.isDrop()) {
                         return false;
                    JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
                    return dropLocation.getPath() != null;
               public boolean importData(TransferHandler.TransferSupport support) {
                    if (!canImport(support)) {
                         return false;
                    JTree.DropLocation dropLocation = (JTree.DropLocation) support.getDropLocation();
                    TreePath path = dropLocation.getPath();
                    Transferable transferable = support.getTransferable();
                    DocumentMutableTreeNode transferData;
                    try {
                         transferData = (DocumentMutableTreeNode) transferable.getTransferData(nodeFlavor);
                    } catch (IOException e) {
                         e.printStackTrace();
                         return false;
                    } catch (UnsupportedFlavorException e) {
                         e.printStackTrace();
                         return false;
                    int childIndex = dropLocation.getChildIndex();
                    if (childIndex == -1) {
                         childIndex = model.getChildCount(path.getLastPathComponent());
                    DocumentMutableTreeNode newNode = new DocumentMutableTreeNode(transferData);
                    DocumentMutableTreeNode parentNode = (DocumentMutableTreeNode) path.getLastPathComponent();
                    model.insertNodeInto(newNode, parentNode, childIndex);
                    TreePath newPath = path.pathByAddingChild(newNode);
                    tree.makeVisible(newPath);
                    tree.scrollRectToVisible(tree.getPathBounds(newPath));
                    return true;
          tree.setDragEnabled(true);
          return tree;
     }

Answer 1

Sorry, my bad :-( I remembered doing something similar in connection with another topic, and was confused. It doesn't help that part of the day I'm on a machine without a JDK. I hope I didn't waste too much of your time.
You do need to override createTransferable (...) in your inner anonymous class that extends TransferHandler.
This is a StringTransferHandler class that devolved out of the other topic. You can get some hints from comparing this with your code.import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import javax.swing.JComponent;
import javax.swing.JEditorPane;
import javax.swing.TransferHandler;
import javax.swing.text.JTextComponent;
public class StringTransferHandler extends TransferHandler {
    JTextComponent source;
    protected String exportString (JComponent c) {
        source = (JEditorPane) c;
        return source.getSelectedText ();
    protected void importString (JComponent c, String str) {
        if (c != source) { // no internal drag-drop
            JEditorPane target = (JEditorPane) c;
            target.replaceSelection (str);
    protected void cleanup (JComponent c, boolean remove) {
        if (remove) {
            JEditorPane source = (JEditorPane) c;
            source.replaceSelection ("");
    protected Transferable createTransferable (JComponent c) {
        return new StringSelection (exportString (c));
    public int getSourceActions (JComponent c) {
        return COPY_OR_MOVE;
    public boolean importData (JComponent c, Transferable t) {
        if (canImport (c, t.getTransferDataFlavors ())) {
            try {
                String str = (String)t.getTransferData (DataFlavor.stringFlavor);
                importString (c, str);
                return true;
            } catch (UnsupportedFlavorException ufe) {
            } catch (IOException ioe) {
        return false;
    protected void exportDone (JComponent c, Transferable data, int action) {
        cleanup (c, getSourceActions (c) == MOVE);
    public boolean canImport (JComponent c, DataFlavor[] flavors) {
        for (int i = 0; i < flavors.length; i++) {
            if (DataFlavor.stringFlavor.equals (flavors)) {
return true;
return false;
}luck, db
edit Glad it's already solved.
Edited by: Darryl.Burke