Select a node in Jtree

[Swetha Krish]

I have a text box and when the user enters the value and click the "Search Button", the value needs to be searched in the Jtree and need to highlight the node.

m_searchButton.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          DefaultTreeModel m_model = new DefaultTreeModel(Root);
          DefaultMutableTreeNode node = searchNode(m_searchText.getText());  //Searching the tree to math the  given string
          JTree m_tree = new JTree(m_model);
          if(node != null)
            {
                //make the node visible by scroll to it
                TreeNode[] nodes = m_model.getPathToRoot(node);
                TreePath path = new TreePath(nodes);
                System.out.println(path.toString());    // Able to get the exact node here
                m_tree.setExpandsSelectedPaths(true);              
                m_tree.setSelectionPath(new TreePath(nodes));
            }
            else
            {
                System.out.println("Not found");
            }
        }
      }); 

 private DefaultMutableTreeNode searchNode(String nodeStr)
        {
          DefaultMutableTreeNode node = null;
          Enumeration e = entityRoot.breadthFirstEnumeration();
          while (e.hasMoreElements())
          { 
            node = (DefaultMutableTreeNode) e.nextElement();            
            if ((node.getUserObject().toString()).contains(nodeStr))
            {
              return node;
            }
          }
          return null;
        }

If I enter the string and hit search , I am able to search the tree and get the exact node and its path.

But I could not make it selected. If the node is collapsed I need to expand and select it.

Path count is 3.

Can anyone help in getting this done.

[Arun Chidam]

Can you please try the below bit of code....

javax.swing.tree.TreePath path = this.myTree.getPathForRow(selectedid);//pass the selected id here
myTree.setSelectionPath(path);
myTree.scrollPathToVisible(treePath);

[Swetha Krish]

I tried the code and still the given node is not selected.

[James Sabre]

Once again I must be missing something. Your code

      JTree m_tree = new JTree(m_model);  
          if(node != null)  
            {  
                //make the node visible by scroll to it  
                TreeNode[] nodes = m_model.getPathToRoot(node);  
                TreePath path = new TreePath(nodes);  
                System.out.println(path.toString());    // Able to get the exact node here  
                m_tree.setExpandsSelectedPaths(true);                
                m_tree.setSelectionPath(new TreePath(nodes));  
    

creates a brand new JTree that has nothing to do with the JTree that is displaying your TreeModel. I would expect you to use the JTree that is currently displaying the TreeModel.

[Campbell Ritchie]

. . . and welcome to the Ranch Swetha Krish

[Swetha Krish]

I got it.I worked...Thank you....

[Swetha Krish]

Is it possible to return all the possible nodes matching the search string and make them selected.

[Paul Clapham]

I don't see why not. Of course you would have to change the tree's selection model to allow multiple selections, but beyond that it's probably a very simple change to your existing code.

[Darryl Burke]

Continued here: https://coderanch.com/t/544262/GUI/java/Help-needed-selecting-multiple-nodes