Drag and drop of Windows icons inside Java......possible ?

Hi all !
does anybody know if it's possible to do drag and drop of windows icons (like folders) into Java Frames or other containers ?
I'd like to write an application where the user can drag Windows folders inside a Frame/Container and collect Folder information (the path to the folder)
Is it possible to do it ?
Thanks a lot
Francesco

Hi,
It is possible.
You can drag platform independent objects like folders, icons etc. from the native platform to your java app.
The Java-Object you need in this case is a
DataFlavour like
DataFlavor.stringFlavor // for text
DataFlavor.javaFileListFlavor // for folders
in the tutorial jacob has linked you find more about this.
Olek

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Drag and drop to Windows desktop

Hi
I've been struggling with this for a while, I've got a TransferHandler class that allows drag and drop from Windows desktop to application, now I'd like to do the reverse, but can't seem to provide the suitable DataFlavor to the OS, I'm using javaFileListFlavor obviously. I am currently creating a Transferable with createTransferable, but this is a StringSelection, and I can't remove this because I need it for internal drag and drop in the application. Please advise.
public class CDrag extends TransferHandler {
    public CDrag(TreeTableView ttv) {
        this.ttv = ttv;
        dndData = new ArrayList();
        relPath = "/";
        try {
            uriFlavor = new DataFlavor("text/uri-list;class=java.lang.String");
        } catch (ClassNotFoundException e) {
    @Override
    public int getSourceActions(JComponent c) {
        return MOVE;
    @Override
    protected Transferable createTransferable(JComponent c) {
        String nodes = "";
        int j = 0;
        TreePath[] sel = ttv.treeTable.getTreeSelectionModel().getSelectionPaths();
        for (TreePath i : sel) {
            FileNode fNode = (FileNode) i.getLastPathComponent();
            if (j > 0) {
                nodes = nodes + "\n";
            nodes = nodes + fNode.toString();
            j++;
        return new StringSelection(nodes);
    @Override
    protected void exportDone(JComponent c, Transferable t, int action) {
        if (!dndData.isEmpty()) {
            File[] sg = (File[]) dndData.toArray();
         // delete files that are dropped
            dndData.clear();
    @Override
    public boolean canImport(TransferSupport supp) {
        if (supp.isDataFlavorSupported(DataFlavor.stringFlavor)) {
            return true;
        if (supp.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
            return true;
        if (supp.isDataFlavorSupported(uriFlavor)) {
            return true;
        return false;
    private boolean importFiles(TransferSupport supp, File[] files) {
     // function that recursively processes all files and folders
    @Override
    public boolean importData(TransferSupport supp) {
        if (!canImport(supp)) {
            return false;
        String fns = "";
        Transferable t = supp.getTransferable();
        try {
            if (supp.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
                File[] fnsl = (File[]) ((List) t.getTransferData(DataFlavor.javaFileListFlavor)).toArray();
                return importFiles(supp, fnsl);
            } else if (supp.isDataFlavorSupported(uriFlavor)) {
                String s = (String)t.getTransferData(uriFlavor);
          StringTokenizer st = new StringTokenizer(s, System.getProperty("line.separator"));
          ArrayList files = new ArrayList<File>();
          while (st.hasMoreTokens()) {
               String file = st.nextToken();
               try {
                       URL url = new URL(file);
                    files.add(new File(URLDecoder.decode(url.getPath())));
               } catch (MalformedURLException mue) {
                return importFiles(supp, (File []) files.toArray());
            } else {
                fns = (String) t.getTransferData(DataFlavor.stringFlavor);
        } catch (UnsupportedFlavorException ex) {
            Logger.getLogger(CDrag.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(CDrag.class.getName()).log(Level.SEVERE, null, ex);
     // the rest of the code here process a StringSelection
        return true;
    private List<File> dndData;
    private String relPath;
    private DataFlavor uriFlavor;
}I have the following information available in the FileNode class - the name of the file, the path inside the application, date modified, size, whether it is a file or folder. How do I get these values into a javaFileListFlavor that Windows will understand? Also, I would need a way of returning the actual file data (which will be read from a remote server). The basic File class doesn't allow many of these things to be set.
Regards
Lionel

I have the following information available in the FileNode class - the name of the file, the path inside the application, date modified, size, whether it is a file or folder. How do I get these values into a javaFileListFlavor that Windows will understand? Also, I would need a way of returning the actual file data (which will be read from a remote server). The basic File class doesn't allow many of these things to be set.I know I tried the same thing - I'm not sure this can be done at all, it could be that this can't be done if the file doesn't already exist somewhere on the local file system.
Edited by: tjacobs01 on Feb 11, 2009 12:41 AM

Activating Drag and Drop As window in jdevstudio1013

Dear All,
I'm using jdevstudio1013.I don't see Drag And Drop As Window below Component window.Instead I see Property Inspecter Window .
How to activate Drop And Drag As window?
With rgds,
Shrinaw

Hi,
The project is set as a JSF project.
And yes, there are the following error messages in the console when trying to drop a method into the page. The create command button / link dialog appears, and after choosing an option, nothing happens.
2007.07.30. 9:34:39 oracle.javatools.logging.LogUtils log
WARNING: Exception in task oracle.bali.xml.model.XmlModel$4@ebad43 on model orac
le.jdevimpl.webapp.jsp.JspXmlModel@eefa28; txn name=internal txn
oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil$InvalidArgumentXmlException: Body node is not valid location for inserting Messages element. Try inserting at another location in the document.
at oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil._doInsertNodes(ModelDomUtil.java:1716)
at oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil.doInsertNodes(ModelDomUtil.java:1599)
at oracle.jdevimpl.webapp.common.WebAppXmlModel.insertNodesImpl(WebAppXmlModel.java:124)
at oracle.bali.xml.model.XmlModel$4.performTask(XmlModel.java:1414)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.bali.xml.model.XmlModel.insertNodes(XmlModel.java:1384)
at oracle.jdevimpl.webapp.editor.LayoutXmlView$1.performTask(LayoutXmlView.java:194)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.jdevimpl.webapp.editor.LayoutXmlView.insertNodes(LayoutXmlView.java:181)
at oracle.bali.xml.model.AbstractModel$1.performTask(AbstractModel.java:466)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:190)
at oracle.bali.xml.model.AbstractModel.insertXmlKey(AbstractModel.java:447)
at oracle.adfdtinternal.view.faces.addin.ADFBindingXmlContextListener$AddMessagesPostInsertionTask.performTask(ADFBindingXmlContextListener.java:227)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.adfdtinternal.view.common.binding.operation.CreateOperation$1.
performTask(CreateOperation.java:170)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(Sta
ndardTransactionTask.java:167)
at oracle.adfdtinternal.view.common.binding.operation.CreateOperation.apply(CreateOperation.java:147)
at oracle.bali.xml.model.datatransfer.operation.PerformOperationAction.actionPerformed(PerformOperationAction.java:39)
at oracle.bali.xml.share.ActionProxy.actionPerformed(ActionProxy.java:47)
at oracle.bali.xml.gui.swing.dnd.DropMenuInvoker$CleanupProxy.actionPerformed(DropMenuInvoker.java:235)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
at java.awt.Component.processMouseEvent(Component.java:5488)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
at java.awt.Component.processEvent(Component.java:5253)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1774)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
2007.07.30. 9:34:39 oracle.javatools.logging.LogUtils log
WARNING: Exception in task oracle.jdevimpl.webapp.editor.LayoutXmlView$1@bc1eb2
on model oracle.jdevimpl.webapp.editor.LayoutXmlView@18587fe; txn name=internal
txn (exception previously logged)
2007.07.30. 9:34:39 oracle.javatools.logging.LogUtils log
WARNING: Exception in task oracle.bali.xml.model.AbstractModel$1@833c98 on model
oracle.jdevimpl.webapp.editor.LayoutXmlView@18587fe; txn name=Insert Messages (exception previously logged)
2007.07.30. 9:34:39 oracle.javatools.logging.LogUtils log
WARNING: Exception in task oracle.adfdtinternal.view.faces.addin.ADFBindingXmlContextListener$AddMessagesPostInsertionTask@1ff5bf1 on model oracle.jdevimpl.webapp.editor.LayoutXmlView@18587fe; txn name=Add faces messages task (exception previously logged)
2007.07.30. 9:34:39 oracle.javatools.logging.LogUtils log
WARNING: Exception in task oracle.adfdtinternal.view.common.binding.operation.CreateOperation$1@1ed3ca7 on model oracle.jdevimpl.webapp.editor.LayoutXmlView@18587fe; txn name=Create ADF Command Button (exception previously logged)
oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil$InvalidArgumentXmlException: Body node is not valid location for inserting Messages element. Try inserting at another location in the document.
at oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil._doInsertNodes(ModelDomUtil.java:1716)
at oracle.jdevimpl.webapp.model.content.dom.util.ModelDomUtil.doInsertNodes(ModelDomUtil.java:1599)
at oracle.jdevimpl.webapp.common.WebAppXmlModel.insertNodesImpl(WebAppXm
lModel.java:124)
at oracle.bali.xml.model.XmlModel$4.performTask(XmlModel.java:1414)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.bali.xml.model.XmlModel.insertNodes(XmlModel.java:1384)
at oracle.jdevimpl.webapp.editor.LayoutXmlView$1.performTask(LayoutXmlView.java:194)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.jdevimpl.webapp.editor.LayoutXmlView.insertNodes(LayoutXmlView.java:181)
at oracle.bali.xml.model.AbstractModel$1.performTask(AbstractModel.java:466)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:190)
at oracle.bali.xml.model.AbstractModel.insertXmlKey(AbstractModel.java:447)
at oracle.adfdtinternal.view.faces.addin.ADFBindingXmlContextListener$AddMessagesPostInsertionTask.performTask(ADFBindingXmlContextListener.java:227)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.adfdtinternal.view.common.binding.operation.CreateOperation$1.performTask(CreateOperation.java:170)
at oracle.bali.xml.model.task.StandardTransactionTask.runThrowingXCE(StandardTransactionTask.java:167)
at oracle.adfdtinternal.view.common.binding.operation.CreateOperation.apply(CreateOperation.java:147)
at oracle.bali.xml.model.datatransfer.operation.PerformOperationAction.a
ctionPerformed(PerformOperationAction.java:39)
at oracle.bali.xml.share.ActionProxy.actionPerformed(ActionProxy.java:47)
at oracle.bali.xml.gui.swing.dnd.DropMenuInvoker$CleanupProxy.actionPerformed(DropMenuInvoker.java:235)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
at java.awt.Component.processMouseEvent(Component.java:5488)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
at java.awt.Component.processEvent(Component.java:5253)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1774)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Thanks,
Patrik
(PS.: Is it the right thread or should I start another one?)

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NBW-Java wrote:
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greetings Twist

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Message was edited by:
sbandyop

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Drag and drop of Windows icons inside Java......possible ?

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