JTree setSelectionPaths problem

Hi,
I am searching my jTree and the value that are return by the search are stored. However I will like to be able to select all the nodes that match the criteria. I can select one node using setSelectedPath(node.getPath), however I would like to use the setSelectedPaths(TreePaths[]) method so that I can select all of the nodes that match the criteria. I would appreciate any help in this matter.
Rudy

No need to worry i sorted it.
Thanks

Similar Messages

JTree selection problem

I have a problem trying to select a node of a JTree using JDK 1.3.1 and JDK 1.4 beta 3. I use a JTree with a DefaultTreeModel and DefaultMutableTreeNodes.
Before the tree became visible it has all the nodes loaded but not visible. Then I want to select a path of the tree using a node (DefaultMutableTreeNode) but I not able to do it.
The path isn't selected and isn't visible.
I use the following code:
jTree.setExpandsSelectedPaths(true)
jTree.setSelectionPath(new TreePath(node.getPath()));
//I've also tried with
jTree.expandPath(new TreePath(dmtn.getPath()));Thanks.

Fair enough. I guess I need to do a bit more reading.
You have to create a new TreePath object because the
getPath() method of DefaultMutableTreeNode returns an
array of TreeNodes where as the setSelected method of
JTree requires a TreePath object.
Why are you creating a new path with the contents ofa
call to getPath?
wouldn't node.getPath() be what you want toexpend/set
visible/scroll to etc
try it without creating a new TreePath

JTree Refesh problem

Hello --
I've searched this subject ad nauseum on these forums and the rest of the web, and I'm still coming up blank.
Basically, I have a file structure JTree. To do a "refresh" view, I basically kill the original object, and rebuild it again -- while first storing the last TreePath the user was on.
Since this tree is built dynamically, placeholders are used to tell if the parent node has any children. From there, it looks up its children.
During the refresh, I fire the tree.expandPath(path), and in my expansion listener, it should take care of the rest.
Well, it seems like all the steps are going correctly, due to the debug output I'm getting, but I can't get the tree to scroll to the path. Here's the reload part:
public void refreshTree(TreePath path){
   TP tp = null;
   Object [] obj = path.getPath();
     for (int i = 2; i <= obj.length; i++){
          tp = new TP(obj, i);
       tree.expandPath(tp.getTP());
//I've tried these in the for loop to no avail
//               tree.setSelectionPath(tp.getTP());
//              tree.scrollPathToVisible(tp.getTP());
       //this should be the last and final TreePath object
     tree.expandPath(tp.getTP());
     //tree.getSelectionModel().setSelectionPath(tp.getTP());
          tree.setSelectionPath(tp.getTP());
     tree.scrollPathToVisible(tp.getTP());
     //this class exists so I can build the treepath one
        //leaf at a time
     class TP extends TreePath{
          public TP(Object[] obj, int length){
               super(obj, length);
          public TreePath getTP(){
               return this;
     }I've tried rebuild and all, and it seems like everything is doing what it's supposed to except drawing it right. Here's the code for the expansion:
class selectionListener implements TreeExpansionListener{
   public void treeExpanded(TreeExpansionEvent evt){
     DefaultMutableTreeNode node = getTreeNode(evt.getPath());
     TreeNode firstBorn = node.getFirstChild();
     if (firstBorn.toString().equals(PLACEHOLDER)){
          System.out.println("made it"); //debug
          populateTree(evt.getPath()); //this gets the new stuff
public void treeCollapsed(TreeExpansionEvent evt){}
}So, again, it seems like everything is firing the way it should, it's just not redrawing the tree to the current path.
I'm on Java 1.4[02], Windows 2K, and JTree is set to SINGLE selection mode. If you need any additional information, please let me know.
Thank you very much for your time.
-Steve

It seems that the tree is firing a node change itself, because I have code executing in the
public void treeExpanded(TreeExpansionEvent evt)
function.
I also put a bit of debug code in... I have
System.out.println("Is collapsed? " + tree.isCollapsed(tp.getTP()));
Inside my for loop... the output is false everytime.
So it seems that everything exists, it's just not repainting the gui for some reason or other. I'm not spinning off seperate threads to do anything, so I'd assume it's not a thread problem.
Any ideas? This is really getting frustrating, for something I thought would be so simple.

Please help with JTree.setSelectionPath

Hi....i have a split window, with a JTree on the left and a heap of small pic on the right. If i select any node in the tree, my program can highlight the corresponding pic on the right. Now, my problem is how to select the tree node, if i select the pic on the right first.
I tried to use setSelectionPath(TreePath)...but i couldnt get the TreePath. I also tried to create a new path, by
TreePath path1 = new TreePath(Object[]{root, object1});
where, object1 is the selected object from the right split (the pic)
Please help me...thanx a lot !!

Please go to
http://forums.java.sun.com/thread.jsp?forum=57&thread=164386
Hope this will help u

JTree Inserting Problem

Please help me ..
i have write a code ..which is when the user clicks the button...
a jtree table will come and the values inside the jtree will be filled by the contents of the selected items in the form...
but my problem is jtree only is comming
i created the object class ... but ...
the initialisation is not happening...
plz check the code below .. this is my class
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
public class Reservation extends JFrame implements ItemListener,ActionListener{
     JComboBox fromCity = null;
     JComboBox toCity = null;
     JComboBox dDay = null;
     JComboBox dMonth = null;
     JComboBox dYear = null;
     JComboBox rDay = null;
     JComboBox rMonth = null;
     JComboBox rYear = null;
     JComboBox adult = null;
     JComboBox Cabin = null;
     JFrame table;
     public Reservation()
          setSize(600,400);
          JPanel p = new JPanel();
          //getContentPane().setLayout(new BorderLayout());
          GridBagLayout gbl = new GridBagLayout();
          GridBagConstraints gbc = new GridBagConstraints();
          p.setLayout(gbl);
          String []cities = {"New York","Chicago","Miami","Pittsburgh","Memphis","New Orleans"};
          String [] days={"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","27","28","29","30","31"};
          String [] months = {"January","Feburary","March","April","May","June","July","August","September","October","November","December"};
          String [] year = {"2006","2007"};
          String [] adt = {"1","2","3","4"};
          String [] cab = {"Buisness","Economy"};
          fromCity = new JComboBox(cities);
          fromCity.setSelectedIndex(0);
          toCity = new JComboBox(cities);
          toCity.setSelectedIndex(0);
          dDay = new JComboBox(days);
          dMonth = new JComboBox(months);
          dYear = new JComboBox(year);
          rDay = new JComboBox(days);
          rMonth = new JComboBox(months);
          rYear = new JComboBox(year);
          adult = new JComboBox(adt);
          Cabin = new JComboBox(cab);
          JLabel frmCity = new JLabel("From");
          frmCity.setLabelFor(fromCity);
          JLabel tCity = new JLabel("To");
          tCity.setLabelFor(tCity);
          JLabel dDate = new JLabel("Departure Date");
          dDate.setLabelFor(dDate);
          JLabel rDate = new JLabel("Return Date");
          rDate.setLabelFor(rDate);
          JLabel Psg = new JLabel("Pasengers");
          Psg.setLabelFor(Psg);
          JLabel Adults = new JLabel("Adults");
          Adults.setLabelFor(Adults);
          JLabel cabin = new JLabel("Cabin");
          cabin.setLabelFor(cabin);
          JLabel search = new JLabel("Search By");
          search.setLabelFor(search);
          JRadioButton ROneWay = new JRadioButton("One Way");
          JRadioButton RRoundTrip = new JRadioButton("Round Trip");
          JButton searchbutton = new JButton("Date");
          ButtonGroup group = new ButtonGroup();
          group.add(ROneWay);
          group.add(RRoundTrip);
          gbc.gridx = 0;
          gbc.gridy = 0;
          gbc.insets = new Insets(0,30,0,0);
          p.add(frmCity,gbc);
          gbc.gridx =1;
          gbc.gridy = 0;
          gbc.insets = new Insets(0,30,0,0);
          p.add(fromCity,gbc);
          gbc.gridx =0;
          gbc.gridy = 1;
          gbc.insets = new Insets(0,30,0,0);
          p.add(tCity,gbc);
          gbc.gridx =1;
          gbc.gridy = 1;
          gbc.insets = new Insets(10,30,0,0);
          p.add(toCity,gbc);
          gbc.gridx = 0;
          gbc.gridy = 2;
          gbc.insets = new Insets(10,50,0,0);
          p.add(ROneWay,gbc);
          gbc.gridx = 1;
          gbc.gridy = 2;
          gbc.insets = new Insets(10,30,0,0);
          p.add(RRoundTrip,gbc);
          gbc.gridx = 1;
          gbc.gridy = 3;
          gbc.insets = new Insets(0,0,0,0);
          p.add(dDate,gbc);
          gbc.gridx = 0;
          gbc.gridy = 4;
          p.add(dDay,gbc);
          gbc.gridx = 1;
          gbc.gridy = 4;
          p.add(dMonth,gbc);
          gbc.gridx = 2;
          gbc.gridy = 4;
          p.add(dYear,gbc);
          gbc.gridx = 1;
          gbc.gridy = 5;
          gbc.insets = new Insets(0,0,0,0);
          p.add(rDate,gbc);
          gbc.gridx = 0;
          gbc.gridy = 6;
          p.add(rDay,gbc);
          gbc.gridx = 1;
          gbc.gridy = 6;
          p.add(rMonth,gbc);
          gbc.gridx = 2;
          gbc.gridy = 6;
          p.add(rYear,gbc);
          gbc.gridx = 1;
          gbc.gridy = 7;
          p.add(Psg,gbc);
          gbc.gridx = 0;
          gbc.gridy = 8;
          p.add(Adults,gbc);
          gbc.gridx = 1;
          gbc.gridy = 8;
          p.add(adult,gbc);
          gbc.gridx = 0;
          gbc.gridy = 9;
          p.add(cabin,gbc);
          gbc.gridx = 1;
          gbc.gridy = 9;
          gbc.insets = new Insets(10,0,0,0);
          p.add(Cabin,gbc);
          gbc.gridx = 0;
          gbc.gridy = 10;
          p.add(search,gbc);
          gbc.gridx = 1;
          gbc.gridy = 10;
          gbc.insets = new Insets(10,0,0,0);
          p.add(searchbutton,gbc);
          getContentPane().add(p);
          fromCity.addItemListener(this);
          toCity.addItemListener(this);
          dDay.addItemListener( this);
          dMonth.addItemListener( this);
          dYear.addItemListener(this);
          adult.addItemListener(this);
          Cabin.addItemListener(this);
          searchbutton.addActionListener(this);
          //Jtable form
          table = new JFrame();
          Container container;
          container = table.getContentPane();
          JPanel jpanel = new JPanel(new GridLayout(2,1));
          container.setLayout(new GridLayout(2,1));
          JLabel l1 = new JLabel("Departure Journey");
          l1.setLabelFor(l1);
          container.add(l1);
          final String[] colHeads = {"","Flightno","Date","Departure Time","Arrival Time","Flight","Duration","Fare"};
          final Object[ ][ ] data = new Object[10][10];
          JTable table = new JTable(data,colHeads);
          int v=ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
          int h = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
          JScrollPane jsp = new JScrollPane(table,v,h);
          container.add(jsp,BorderLayout.CENTER);
     String ffcity,ttcity,dday,dmon,dyear,adt,cab;
     public void itemStateChanged(ItemEvent e)
          ffcity = (String)fromCity.getSelectedItem();
          ttcity = (String)toCity.getSelectedItem();
          dday = (String)dDay.getSelectedItem();
          dmon = (String)dMonth.getSelectedItem();
          dyear = (String)dYear.getSelectedItem();
          adt = (String)adult.getSelectedItem();
          cab = (String)Cabin.getSelectedItem();
     public void actionPerformed(ActionEvent ae)
     if(ae.getActionCommand() == "Date")
          try
          Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          Connection con = DriverManager.getConnection("jdbc:odbc:ds","sa", "");
          PreparedStatement stmt = con.prepareStatement("select ifno,vdtime,vatime,vdate1,vdate2,vdate3,efare from airways where fcity = ? and tcity = ? and vdate1 = ? and vdate2 = ? and vdate3 = ?");
          stmt.setString(1,ffcity);
          stmt.setString(2,ttcity);
          stmt.setString(3,dday);
          stmt.setString(4,dmon);
          stmt.setString(5,dyear);
          ResultSet d = stmt.executeQuery();
          /* int count=0;
          while(d.next())
          {count++;
          int i = 0;*/
          while(d.next())
          /*for(int j =1;j<=7;j++)
          data[i][j] = rs.getString(j);
          System.out.println(" " + data[i][j]);
          }i++;*/
          System.out.println(d.getInt(1));
          System.out.println(d.getDouble(2));
          catch(Exception ex)
               System.out.println("Error occurred");
               System.out.println("Error:"+ex);
          table.setVisible(true);
          table.setSize(300,200);
     private static void createAndShowGUI()
          JFrame.setDefaultLookAndFeelDecorated(true);
          Reservation r=new Reservation();
          JFrame frame = new JFrame("Reservation Form");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          //r.pack();
          r.setVisible(true);
     public static void main(String[] args)
          SwingUtilities.invokeLater(new Runnable(){
               public void run()
                    createAndShowGUI();
in this object creation is not happening
when i run this code ...
only jtree is comming..
how can i make it the values of seceted items to come in table
i commented the parts that having error..
when u uncomment it u will get the problem of this code

please anyone

JTree selection problem when using custom renderer and editor

Hello:
I created a JTree with custom renderer and editor.
The customization makes JCheckBox to be the component
responsible for editing and rendering.
The problem is that when I click on the node with the checkbox
the JTree selection model does not get updated.
Without customizations of the editor and renderer the MouseEvent would be fired and BasicTreeUI$MouseHandler.mousePressed() method would call
the selectPathForEvent() method which would be responsible for updating
the selection model. At the same time if I attach a mouse listener to the JTree (customized) I see the events when clicking on the nodes. It seems like the MouseEvent gets lost and somehow as a result of which the selection model does not get updated.
Am I missing something?
Thanks
Alexander

You probably forgot to call super.getTreeCellRendererComponent(...) at the beginning of your getTreeCellRendererComponent(...) method in your custom renderer.
Or maybe in the getTreeCellEditorComponent(...) of the TreeCellEditor...

JTree Repaint Problem .

I'm creating a dynamic JTree by querying th DB. The JTree has to reflect the changes if any.
But the problem is that although I'm getting all the correct nodes in the JTree, the tree display is not repainted if the window is maximized or focussed and the tree area is displayed grey. Other components like buttons etc are correctly visible.
If I click in the greyed area of the JTree then that particular node is visible and the rest nodes are hidden.
same problem comes when I have a JPopup for the nodes.. It leaves a greyed rectangle in place of the JPopup.
Any suggestions will be a great help.
- Praveen

I tried the reload , revalidate and the repaint method of the Treemodel, but nothing changed... its all the same.I'd like to explain in full what am I doing.
I have some items in the DB which are shown in the JTree. When any Item is added to the DB I poll the DB
after an interval to check new entries or deleted entries, and this is to be updated to the JTree.
The additions and deletions are going on properly a/c to the DB the only problem being that , that if the window(JFrame) containing the JTree (JTree is contained in JScrollPane) is minimized or hidden, then only the JTree is greyed and not the other components such as the buttons.
Interestingly if I double click in the JTree area then the Jtree becomes visible properly. This happens after each update of the JTree.
Hope this description will give a better view.
Thanks for all your previous helpful hints.

JTree expanding problem(urgent)

hi all,
I am new to java and i am developing DMS where i use JTree to display folders. I am using vectors for displaying folder names and files. when i select a folder and create a folder under that, after creating it should highlight the folder where i am creating folder but in my project it is highlighting HOME folder.
I tried tree.expandPath, tree.setSelectionPath(treepath), tree.fireTreeExpanded(treepath); but its not working.
before this steps i am printed treepath, path is correctly printing. I dont know why the tree is not expanding....
please give me a solution.....

tree.scrollPathToVisible(...)

JTree setSelectionPath(...)

What I want:
A JTree with discontiguous selections.
But depending on the node that the user clicks on, I can either allow or disallow the selection to be added to the existing selected nodes.
I have extended DefaultTreeSelectionModel and overriden setSelectionPath().
This gets called when the user clicks on a node with the mouse. If I want to ignore the selection, I just don't pass the call up to super:
public void setSelectionPath(final TreePath path)
    final Object node = path.getLastPathComponent();
    if (node instanceof SelectionNode)
        final SelectionNode selectionNode = (SelectionNode)node;
        if (selectionNode.isEnabled())
            super.setSelectionPath(path);
        // else don't select the node
}This works fine to allow/disallow the selection of a node when the user simply clicks on a single node.
But if user does a CTRL+CLICK, setSelectionPath(...) does not get called. Thus I can't get the node that the user CTRL+CLICKED on to allow or disallow selection.
Is there some other method that can be overriden that will allow me to catch selections when the CTRL key is down?

addSelectionPaths() and setSelectionPaths() methods
Regards,
Stas

JTree - setSelectionPath not the same as mouse click

I have a JTree. Selecting a node on it with a mouse displays a panel in a neighbouring area. However, I also need to select a node programatically. I have tried using JTree.setSelectedPath(), JTree.getSelectionModel().setSelectionPath() and a few variations thereof. All these methods highlight the node but do not bring up the panel alongside. The widgets are in a framework, so I am limited in changing that.
Why is a mouse click different from a set selection path? The keyboard works fine too if I navigate using the arrow keys and then press Enter. Strangely, clicking anywhere within the JTree after selecting the node programatically also works. I am using JDK 1.3.

Hi DB,
Try restoring the connection (right click on the source system - restore).
Hope this helps.
Regards,
Diego

JTree scrollbar problem - can't scroll back to top when some nodes hidden

I have a problem which I cannot resolve: I have a JTree which has had 88 rows added to it, and which then has 15 or so rows set to be not visible; when I then scroll to the bottom of the pane I am unable to scroll all the way back to the top using either the scroll button at the top of the bar or the mouse scroll wheel although I can drag the knob to get to the top; using the button or wheel, the scrolling stops somewhat short of the top; via testing I've found that the AdjustmentEvent is not fired when it reaches that point. Anyone seen this before and/or know a way around it?
Thanks in advance,
Mike

MikeAuerbach267 wrote:
It turns out that my problem was due to the fact that I am using my own TreeCellRenderer which makes invisible some nodes via user option but doesn't reload the tree; hence the confusion as to the scrollbar size. I now correctly reload after user option has changed rather than render nodes invisible and all is fine. Which reinforces Andrew's view in reply #1 that a 'vague waving about of hands' does not allow the forum members to help.

JTree, strange problem

I created a JTree on top of a DefaultMutatableTreeNode by using the constructor JTree(TreeNode root)
I tried removing all leaf nodes of the model, using node.removeFromParent(). And unsurprisingly the UI is automatically updated.
After that, i reinsert new leaf nodes(they are new instances having new physical address) into the model, using parent.add(node). And unsurprisingly, the UI is automatically updated. The JTree looks powerful at the moment, i am quite satisfied with it.
However the nightmare comes, when i click on the leaf nodes on the UI and the getLastSelectedPathCompoent() mystically returned the already-removed leaf nodes but not the newly-inserted leaf nodes.
I tried debugging for a couple of hours, but failed! I think i am doing something really wrong :( Anyone help me out? Thanks a lot!

problem solved:)
solved by calling the updateUI() for the removal operation.....

JTree renderer problem

I have listed below a shor example.
What I need is a method to do each cell to be as wide as the tree is (see the red border line), even if I resize the window. And ofcourse, the tree should keep a minimum width so every cell is fully shown.
I'll be waiting for your answers. Thanks.
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
public class TreeExample extends JFrame {
    public TreeExample() {
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        getContentPane().add(new JScrollPane(new SomeTree()));
        pack();
    public static void main(String[] args) {
       SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new TreeExample().setVisible(true);
class SomeTree extends JTree {
    public SomeTree() {
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("root");
        String str = "***";
        for (int i = 0; i < 10; i++) {
            root.add(new DefaultMutableTreeNode(str));
            str += "***";
        setModel(new DefaultTreeModel(root));
        setCellRenderer(new SomeCellRenderer());
        setBorder(BorderFactory.createLineBorder(Color.RED));
class SomeCellRenderer extends JLabel implements TreeCellRenderer {
    public Component getTreeCellRendererComponent(JTree tree, Object value,
                                                      boolean selected, boolean expanded,
                                                      boolean leaf, int row,
                                                      boolean hasFocus) {
        setOpaque(true);
        setText(value.toString());
        setBackground(Color.LIGHT_GRAY);
        return this;
}

The only problem i can figure is maybe the layout. Flowlayout is squeezing the size of the buttons so that they can appear in the little area that they do get. If you use borderlayout instead of the flowlayout, it may solve your problem. If that also doesn't work then set the minimum sizes of the labels.

Jtree casting problem

Hi ,
I am new to java swings, I am having problem with jtree casting.
I have the tree which I created in the similar way as DNDTree
The tree has 4 types such as model/subject/entity/attribues each
of different class. My problem is when I drag and drop .. later I have
to save the tree with all the properties into respective tables. Please
help me how do I accomplish.
Thanks

Hi, This is the error I m getting.
Excpetion is javax.swing.tree.DefaultMutableTreeNode cannot be cast to com.idecisions.cdi.hme_prac.MySubjectNodejava.lang.ClassCastException: javax.swing.tree.DefaultMutableTreeNode cannot be cast to com.idecisions.cdi.hme_prac.MySubjectNode
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)

JTree Printing Problem

I am having a problem printing a JPanel that includes a JLabel, a JPanel, and a JTree. If I only add the JLabel and JPanel to the JPanel to be printed, everything works fine. But as soon as I add my JTree (which is small, and should fit on one page), the pageIndex stops being incremented and I end up with the print method being infinitely called. Has anyone run into this problem before? Why is the pageIndex not being incremented?
Thanks for any help!
andrewwi1

Ok, after a whole lot of trial and error I think I answered my own question.
It seems that adding the JTree to the Panel to be printed really caused the Print API to call the print method many many times on the same pageIndex. I had never seen it need to render the same page more than 4 or 5 times before now. I was running the code through debug (using VisualAge for Java), and was also causing the panel to be printed to the screen via JFrame. So after I'd get about 30 JFrames containing my print panel I'd assume something was wrong and kill the thread. Turns out it needs to render the same page 30+ times with a JTree (or at least with my JTree). After turning of the JFrame visibility (so I wouldn't see them pop up on my screen) and waiting for quite awhile, the page finally printed just fine.

JTree setSelectionPaths problem

Similar Messages

Maybe you are looking for