JTree expand programatically is not working

Question

jTree1.fireTreeExpanded(curTreePath);
expandAll(jTree1, curTreePath, true);
jTree1.expandPath(curTreePath);
jTree1.scrollPathToVisible(curTreePath);
jTree1.updateUI();
jTree1.setExpandsSelectedPaths(true);
jTree1.expandPath(curTreePath);
expandAll(jTree1, curTreePath, true);
for (int i = 0; i < jTree1.getRowCount(); i++)
jTree1.expandRow(i);
jTree1.validate();
jTree1.repaint();
Any help ?

Answer 1

package so;
ToDo list
* Log timestamp and line number of at every exception.
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.sql.*;
import java.io.*;
import java.net.*;
import java.util.Enumeration;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.tree.*;
public class SCM extends javax.swing.JFrame implements javax.swing.event.TreeExpansionListener, javax.swing.event.TreeModelListener, javax.swing.event.TreeWillExpandListener
    Connection con = null;
    java.sql.Statement stmt = null;
    ResultSet rs = null;
    PrintStream log = null;// File creation at local system, to record events, actions, errors and traces
    javax.swing.tree.TreePath curTreePath = null;
    /** Creates new form SCM */
    public SCM()
        //---------------------- Native LookandFeel Windows is expected.-------------------//
        try
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        catch (Exception e)
            System.out.println("Error setting native LAF: " + e);
        //******************** Native LookandFeel Windows is expected.*******************//
        // initialising GUI containers and controls
        initComponents();
        TableCellRenderer defaultRenderer;
        defaultRenderer = jTable1.getDefaultRenderer(JLabel.class);
        jTable1.setDefaultRenderer(JLabel.class, new Label_cell(defaultRenderer));
        setState(javax.swing.JFrame.HIDE_ON_CLOSE);
        jfc.setEnabled(false);
        this.setSize(1024, 740);
        jTree1.setSize(400, this.getWidth() / 4);
        jTree1.setRootVisible(false);
        jTree1.addTreeWillExpandListener(this); // Registering jTree1 to Expand listener.
        jTree1.setCellRenderer(new TreeIconRenderer());
        try
            //-------Preparing Logger----------------//
            FileOutputStream fos = new FileOutputStream(new File(System.getProperties().getProperty("user.home") + System.getProperties().getProperty("file.separator") + "SCM-Log_" + System.currentTimeMillis()));
            log = new PrintStream(fos);
            log.println("Started Time\t\t:" + new java.util.Date().getTime());
            //*******Preparing Logger****************//
            // Initialising jTree1 with the userid and preparing the xml and loading jTree1 with xml content,
            // and expected to repeat the same while refreshing.
            //----- Rendering images for the folders and files i.e. nodes and leaves of this tree
            jTree1 = new XMLTree("215");
            //******** Rendering images for the folders and files i.e. nodes and leaves of this tree
            //Selection can only contain one path at a time, i.e. user is confined to reffere to only one node
            //or leaf at a time
            //jTree1.getSelectionModel().setSelectionMode(javax.swing.tree.TreeSelectionModel.SINGLE_TREE_SELECTION);
            this.setTitle("ZIIC-ITG SCM");// Title can be changed at any time.
        catch (IOException ioe)
            ioe.printStackTrace(log);   //logging Exception.
            //This is first level action and to be decided to go further or not by exit(0);.
    public boolean prepareCon() throws ClassNotFoundException
        try
            if (con != null && !con.isClosed())
                return true;
            else
                Class.forName("oracle.jdbc.driver.OracleDriver");
                java.sql.DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
                con = java.sql.DriverManager.getConnection("jdbc:oracle:thin:@172.16.1.31:1521:soadb", "dms", "dms");
                if (con != null && !con.isClosed())
                    return true;
        catch (java.lang.ClassNotFoundException cnfe)
            cnfe.printStackTrace(log);
        catch (SQLException se)
            se.printStackTrace(log);
        if (con != null)
            return true;
        else
            return true;
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                         
    private void initComponents()
        jPopupMenu1 = new javax.swing.JPopupMenu();
        jSplitPane1 = new javax.swing.JSplitPane();
        jScrollPane1 = new javax.swing.JScrollPane();
        try
            jTree1 = new XMLTree("215");
            jScrollPane2 = new javax.swing.JScrollPane();
            jTable1 = new javax.swing.JTable();
            menuBar = new javax.swing.JMenuBar();
            fileMenu = new javax.swing.JMenu();
            openMenuItem = new javax.swing.JMenuItem();
            saveMenuItem = new javax.swing.JMenuItem();
            saveAsMenuItem = new javax.swing.JMenuItem();
            exitMenuItem = new javax.swing.JMenuItem();
            editMenu = new javax.swing.JMenu();
            cutMenuItem = new javax.swing.JMenuItem();
            copyMenuItem = new javax.swing.JMenuItem();
            pasteMenuItem = new javax.swing.JMenuItem();
            deleteMenuItem = new javax.swing.JMenuItem();
            helpMenu = new javax.swing.JMenu();
            contentsMenuItem = new javax.swing.JMenuItem();
            aboutMenuItem = new javax.swing.JMenuItem();
            //setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        }catch(Exception e){}
        jTree1.setDoubleBuffered(true);
        jTree1.setDragEnabled(true);
        jTree1.setEditable(true);
        jTree1.setFocusTraversalPolicyProvider(true);
        jTree1.setInheritsPopupMenu(true);
        jTree1.setInvokesStopCellEditing(true);
        jTree1.setLargeModel(true);
        jTree1.setMaximumSize(new java.awt.Dimension(250, 64));
        jTree1.setPreferredSize(new java.awt.Dimension(200, 64));
        jTree1.setVerifyInputWhenFocusTarget(false);
        jTree1.addMouseListener(new java.awt.event.MouseAdapter()
            public void mouseClicked(java.awt.event.MouseEvent evt)
                jTree1MouseClicked(evt);
        jTree1.addTreeExpansionListener(new javax.swing.event.TreeExpansionListener()
            public void treeCollapsed(javax.swing.event.TreeExpansionEvent evt)
                jTree1TreeCollapsed(evt);
            public void treeExpanded(javax.swing.event.TreeExpansionEvent evt)
                jTree1TreeExpanded(evt);
        jTree1.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener()
            public void valueChanged(javax.swing.event.TreeSelectionEvent evt)
                jTree1ValueChanged(evt);
        jScrollPane1.setViewportView(jTree1);
        jSplitPane1.setLeftComponent(jScrollPane1);
        jScrollPane2.setAutoscrolls(true);
        jScrollPane2.setDoubleBuffered(true);
        jScrollPane2.setFocusCycleRoot(true);
        jScrollPane2.setFocusTraversalPolicyProvider(true);
        jScrollPane2.setInheritsPopupMenu(true);
        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][]
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            new String []
                "Title 1", "Title 2", "Title 3", "Title 4"
        jTable1.addMouseListener(new java.awt.event.MouseAdapter()
            public void mouseClicked(java.awt.event.MouseEvent evt)
                jTable1MouseClicked(evt);
        jScrollPane2.setViewportView(jTable1);
        jSplitPane1.setRightComponent(jScrollPane2);
        fileMenu.setText("File");
        openMenuItem.setText("Open");
        fileMenu.add(openMenuItem);
        saveMenuItem.setText("Save");
        fileMenu.add(saveMenuItem);
        saveAsMenuItem.setText("Save As ...");
        fileMenu.add(saveAsMenuItem);
        exitMenuItem.setText("Exit");
        exitMenuItem.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                exitMenuItemActionPerformed(evt);
        fileMenu.add(exitMenuItem);
        menuBar.add(fileMenu);
        editMenu.setText("Edit");
        cutMenuItem.setText("Cut");
        editMenu.add(cutMenuItem);
        copyMenuItem.setText("Copy");
        editMenu.add(copyMenuItem);
        pasteMenuItem.setText("Paste");
        editMenu.add(pasteMenuItem);
        deleteMenuItem.setText("Delete");
        editMenu.add(deleteMenuItem);
        menuBar.add(editMenu);
        helpMenu.setText("Help");
        contentsMenuItem.setText("Contents");
        helpMenu.add(contentsMenuItem);
        aboutMenuItem.setText("About");
        helpMenu.add(aboutMenuItem);
        menuBar.add(helpMenu);
        setJMenuBar(menuBar);
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(jSplitPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 390, Short.MAX_VALUE)
                .addContainerGap())
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(jSplitPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 268, Short.MAX_VALUE)
                .addContainerGap())
        pack();
    }// </editor-fold>                       
    private void jTree1ValueChanged(javax.swing.event.TreeSelectionEvent evt)
    try
        curTreePath = evt.getPath();
        //curTreePath.getPathCount();
        //selectedNode = stPath.getPathComponent(stCount - 1);
        //TODO add your handling code here:
        if (prepareCon())
            javax.swing.tree.TreePath path = evt.getPath();
            DMETreeNode node = (DMETreeNode) path.getLastPathComponent();
            try
                if (node != null && (node.getSerial() + "").length() > 0)
                    //stmt = con.createStatement();
                    stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
                    rs = stmt.executeQuery("select serial, description, file_location, status, sheet,  part, approvedby, locked, location, created_by from dms_files where owner=" + node.getSerial());
                    SCM_Tbl_model model = new SCM_Tbl_model();
                    model.setRs(rs);
                    //jTable1.setColumnModel(columnModel);
                    jTable1.setModel(model);
                    TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
                    jTable1.setRowSorter(sorter);
            catch (Exception e)
                e.printStackTrace();
        catch (ClassNotFoundException ex)
            ex.printStackTrace(log);
            Logger.getLogger(SCM.class.getName()).log(Level.SEVERE, null, ex);
    private void jTree1MouseClicked(java.awt.event.MouseEvent evt)
    // TODO add your handling code here:   
    if (evt.getButton() == evt.BUTTON3)
        jPopupMenu1.removeAll();
        javax.swing.JMenuItem expandMI = new javax.swing.JMenuItem("Expand");
        javax.swing.JMenuItem expandAllMI = new javax.swing.JMenuItem("Expand All");
        javax.swing.JMenuItem find_folderMI = new javax.swing.JMenuItem("Find Folder");
        final javax.swing.JMenuItem new_folderMI = new javax.swing.JMenuItem("New Folder");
        javax.swing.JSeparator separator1 = new javax.swing.JSeparator();
        jPopupMenu1.setSize(100, 200);
        jPopupMenu1.add(expandMI);
        jPopupMenu1.add(expandAllMI);
        jPopupMenu1.add(separator1);
        jPopupMenu1.add(find_folderMI);
        jPopupMenu1.add(new_folderMI);
        jPopupMenu1.setVisible(true);
        jPopupMenu1.show(evt.getComponent(), evt.getX(), evt.getY());
        //expandToLast(jTree1);
        //jTree1.scrollPathToVisible(curTreePath);
        //jTree1.fireTreeExpanded(curTreePath);       
        ActionListener menuOnTree = new ActionListener()
                    public void actionPerformed(ActionEvent e)
                        if (e.getSource().equals(new_folderMI))
                                DMETreeNode ch=new DMETreeNode("Child of "+((DMETreeNode)curTreePath.getLastPathComponent()).toString());   
                                ((DMETreeNode) curTreePath.getLastPathComponent()).add(ch);
                                jTree1.fireTreeExpanded(curTreePath);
                                expandAll(jTree1, curTreePath, true);
                                jTree1.expandPath(curTreePath);
                                jTree1.scrollPathToVisible(curTreePath);
                                jTree1.updateUI();
                        if (e.getActionCommand().trim().equalsIgnoreCase("Expand"))
                            jTree1.setExpandsSelectedPaths(true);
                            jTree1.expandPath(curTreePath);
                            expandAll(jTree1, curTreePath, true);
                            for (int i = 0; i < jTree1.getRowCount(); i++)
                                jTree1.expandRow(i);
                            jTree1.validate();
                            jTree1.repaint();
                            System.out.println(((DMETreeNode) curTreePath.getLastPathComponent()).getSerial());
                            expandToLast(jTree1);
                            System.out.println(jTree1.getModel().getRoot().toString());
                            ((XMLTree)jTree1).expandAll(true);
                            expandToLast(jTree1);
        expandMI.addActionListener(menuOnTree);
        expandAllMI.addActionListener(menuOnTree);
        find_folderMI.addActionListener(menuOnTree);
        new_folderMI.addActionListener(menuOnTree);
public void expandAll(JTree tree, boolean expand)
        TreeNode root = (TreeNode) tree.getModel().getRoot();
        // Traverse tree from root
        expandAll(tree, new TreePath(root), expand);
    private void expandAll(JTree tree, TreePath parent, boolean expand)
        // Traverse children
        TreeNode node = (TreeNode) parent.getLastPathComponent();
        if (node.getChildCount() >= 0)
            for (Enumeration e = node.children(); e.hasMoreElements();)
                TreeNode n = (TreeNode) e.nextElement();
                TreePath path = parent.pathByAddingChild(n);
                //System.out.println(path.toString());
                expandAll(tree, path, expand);
        // Expansion or collapse must be done bottom-up
        if (expand)
            tree.expandPath(parent);
        else
            tree.collapsePath(parent);
public void expandToLast(JTree tree)
        // expand to the last leaf from the root
        DefaultMutableTreeNode root;
        root = (DefaultMutableTreeNode) tree.getModel().getRoot();
        tree.scrollPathToVisible(new TreePath(root.getLastLeaf().getPath()));
        //System.out.println(""+root.getLastLeaf().getPath().toString());
    public void expandToLast(JTree tree)
        TreeModel data = tree.getModel();
        Object node = data.getRoot();
        if (node == null)
            return;
        TreePath p = new TreePath(node);
        while (true)
            int count = data.getChildCount(node);
            if (count == 0)
                break;
            node = data.getChild(node, count - 1);
            p = p.pathByAddingChild(node);
        tree.scrollPathToVisible(p);
    private void jTree1TreeExpanded(javax.swing.event.TreeExpansionEvent evt)
    // TODO add your handling code here:
        System.out.println("@447");
    private void jTree1TreeCollapsed(javax.swing.event.TreeExpansionEvent evt) {                                    
    // TODO add your handling code here:
    private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {                                            
        System.exit(0);
    @SuppressWarnings("static-access")
    private void jTable1MouseClicked(java.awt.event.MouseEvent evt)                                    
        // TODO add your handling code here:
        jPopupMenu1.removeAll();
        jPopupMenu1.setVisible(true);
        //Prepare Menu items based the event and the user, and the item clicked on i.e.
        javax.swing.JMenuItem menuItem = new javax.swing.JMenuItem("Add A doc", KeyEvent.VK_T);
        jPopupMenu1.add(menuItem);
        ActionListener al = new ActionListener()
                    public void actionPerformed(ActionEvent e)
                        jfc.updateUI();
                        jfc.showOpenDialog(jTable1);
                        jTable1.setValueAt(jfc.getSelectedFile().getAbsolutePath(), jTable1.getSelectedRow(), jTable1.getSelectedColumn());
                        jfc.setDialogTitle("Choose only fmx files");
                        try
                            if (jfc.getSelectedFile().getAbsolutePath() != null)
                                java.io.File f = new java.io.File(jfc.getSelectedFile().getAbsolutePath());
                                if (f.exists())
                                    // Start FTP process.
                                    SCM_FTP ftp = new SCM_FTP();
                                    ftp.connect("ziicsrv11", 21, "z11902", "ziicit");
                                    ftp.bin();
                                    // Change to a new working directory on the FTP server.
                                    ftp.cwd("bin");
                                    // Upload some files.
                                    log.println("FTP Start: " + System.currentTimeMillis());
                                    ftp.stor(f);
                                    ftp.disconnect();
                                    log.println("FTP Done: " + System.currentTimeMillis());
                        catch (java.io.IOException ioe)
                            log.println("File is not Found");
                            ioe.printStackTrace(log);
        menuItem.addActionListener(al);
        menuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_1, ActionEvent.ALT_MASK));
        menuItem.getAccessibleContext().setAccessibleDescription("This doesn't really do anything");
        jPopupMenu1.setSize(100, 200);
        if (evt.getButton() == evt.BUTTON3)//evt.isPopupTrigger()
            jPopupMenu1.show(evt.getComponent(), evt.getX(), evt.getY());
     * @param args the command line arguments
    public static void main(String args[])
        java.awt.EventQueue.invokeLater(new Runnable()
                    public void run()
                        SCM s = new SCM();
                        s.setVisible(true);
                        //s.setState(s.HIDE_ON_CLOSE);
                        s.setAlwaysOnTop(true);
                        SystemTrayTest st = new SystemTrayTest();
                        st.setControl(s);
                        st.showFrame();
    // Variables declaration - do not modify                    
    private javax.swing.JMenuItem aboutMenuItem;
    private javax.swing.JMenuItem contentsMenuItem;
    private javax.swing.JMenuItem copyMenuItem;
    private javax.swing.JMenuItem cutMenuItem;
    private javax.swing.JMenuItem deleteMenuItem;
    private javax.swing.JMenu editMenu;
    private javax.swing.JMenuItem exitMenuItem;
    private javax.swing.JMenu fileMenu;
    private javax.swing.JMenu helpMenu;
    private javax.swing.JPopupMenu jPopupMenu1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JSplitPane jSplitPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTree jTree1;
    private javax.swing.JMenuBar menuBar;
    private javax.swing.JMenuItem openMenuItem;
    private javax.swing.JMenuItem pasteMenuItem;
    private javax.swing.JMenuItem saveAsMenuItem;
    private javax.swing.JMenuItem saveMenuItem;
    // End of variables declaration                  
    private javax.swing.JFileChooser jfc = new javax.swing.JFileChooser();
    public void treeExpanded(TreeExpansionEvent event)
    public void treeCollapsed(TreeExpansionEvent event)
    public void treeNodesChanged(TreeModelEvent e)
    public void treeNodesInserted(TreeModelEvent e)
    public void treeNodesRemoved(TreeModelEvent e)
    public void treeStructureChanged(TreeModelEvent e)
    public void treeWillExpand(TreeExpansionEvent event) throws ExpandVetoException
    public void treeWillCollapse(TreeExpansionEvent event) throws ExpandVetoException
}