Moving rows in JTable

Question

I work with the MVC pattern and I've a JTable like this :

List<Enregistrement> desEnregistrements = dao.lireTousLesEnregistrements(1);
    
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Date Enregistrement");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Libellé");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Motif");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Date facture");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Mode de règlement");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Montant");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Solde");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Etat");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Modifier");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("RecDep");
    ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addColumn("Anticipation");
    
    for (Enregistrement unEnregistrement : desEnregistrements) {
        ((VueAfficherCompteCIO)vue).getModeleJTableCIO().addRow(new String[]{unEnregistrement.getDate(), unEnregistrement.getIdLibelle(), unEnregistrement.getMotif(), unEnregistrement.getDateFacture(), unEnregistrement.getModeReglement(), unEnregistrement.getMontant(), unEnregistrement.getNouveauSolde(), unEnregistrement.getIdEtat(),unEnregistrement.getId(), unEnregistrement.getRecetteDepense(), unEnregistrement.getAnticipation()});   
    }
    
    aspectJtable();

I would like to use a drag and move rows with this JTable so I implements this code : How do I drag and drop a row in a JTable?

But I don't understand how i can implement the interface "Reorderable" to my TableModel.

When I run my project I can use the drag and move (I see the drag...) but there is no movement.

Next, I've this error :

java.lang.ClassCastException: vues.VueAfficherCompteCIO$1 cannot be cast to controleurs.Reorderable
at controleurs.TableRowTransferHandler.importData(TableRowTransferHandler.java:55)
at javax.swing.TransferHandler$DropHandler.drop(TransferHandler.java:1536)
at java.awt.dnd.DropTarget.drop(DropTarget.java:450)
at javax.swing.TransferHandler$SwingDropTarget.drop(TransferHandler.java:1274)
at sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(SunDropTargetContextPeer.java:537)
at sun.awt.X11.XDropTargetContextPeer.processDropMessage(XDropTargetContextPeer.java:184)
at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(SunDropTargetContextPeer.java:851)
at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(SunDropTargetContextPeer.java:775)
at sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:48)
at java.awt.Component.dispatchEventImpl(Component.java:4716)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processDropTargetEvent(Container.java:4566)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4417)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

The 55 line is :

((Reorderable)table.getModel()).reorder(rowFrom, index);

Someone can help me, and explain how it's work ?

Thank you

possible duplicate of [How do I drag and drop a row in a JTable?](http://stackoverflow.com/questions/638807/how-do-i-drag-and-drop-a-row-in-a-jtable) — Aaron Digulla, Jan 25 '13 at 15:24
yes i write this in my question... I would like to know how to implement Reorderable first... — Perroin Thibault, Jan 25 '13 at 15:28
What **exactly** is your problem? I assume you know how to add `implements Reorderable` to your table model. — Aaron Digulla, Jan 25 '13 at 15:36

Sergiy Medvynskyy · Accepted Answer · 2013-01-25T16:11:39.190

8

If I correctly understand the code in the sample to implement the interface Reorderable you simply should get the row which is placed at the fromIndex and inserts at the toIndex.

Example:

public class ReorderableTableModel extends DefaultTableModel implements Reorderable {
  public void reorder(int from, int to) {
    Object o = getDataVector().remove(from);
    getDataVector().add(to, o);
    fireTableDataChanged();
  }
}

Do not forget to set the instanceo of this table model to your table

edited Jan 25 '13 at 16:11

answered Jan 25 '13 at 15:43

Sergiy Medvynskyy

11,160
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Thx, but where can I use this interface ? in the ((Reorderable)table.getModel()).reorder(rowFrom, index); ? This is not clear for me – Perroin Thibault Jan 25 '13 at 15:48
1

Your table model must implement the interface Reorderable. I will update my answere with an example. – Sergiy Medvynskyy Jan 25 '13 at 16:04
Oh ok !! I understand now. I do that but i've not extend with DefaultTableModel.... Sorry for that... – Perroin Thibault Jan 25 '13 at 16:18
1

The code won't work correctly when you move rows down. See my answer for a fix. – Aaron Digulla Jan 25 '13 at 16:22

score 6 · Answer 2 · edited May 23 '17 at 12:14

6

The question How do I drag and drop a row in a JTable? contains all the information you need.

When you create the JTable, you have to specify a table model. This model must implement the interface Reorderable (copy the code from the question above) so the TransferHandler will work. This isn't an official Swing API, it's just something that makes the TransferHandler reusable.

The new method must move the row at fromIndex to the new position toIndex. If you use an ArrayList:

 Object row = list.remove( fromIndex );
 if( fromIndex < toIndex ) { toIndex --; } // We now have one row less!
 list.add( toIndex, row );

edited May 23 '17 at 12:14

Community

1
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answered Jan 25 '13 at 15:49

Aaron Digulla

321,842
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Thx, my table model is in my View and declare like this :modeleJTableCIO = new DefaultTableModel(){ @Override public boolean isCellEditable(int row, int column) { return false; } }; How can I implements Reorderable so ? – Perroin Thibault Jan 25 '13 at 15:59
@PerroinThibault: move the inline class into a new type/file. Create a new "Reorderable.java" and put the code for the interface in there. Make the new type implement the interface. – Aaron Digulla Jan 25 '13 at 16:04

Moving rows in JTable

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