🚀 go-pugleaf

Hi there,

I'm trying out a sample program using a JTree and I'm trying to render
my own icons for closed/open folders and leaf nodes.

When I run my sample program I don't get any error messages and I might get
only one out of the three icons displayed. For instance only the
closedFolder icon will display, however, when I expand the node the icon
disappears. It should be swapped with an openFolder icon.
I don't get it! Could someone please look over my code below and advise as
to where I went wrong?

Alan

************************************************

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.net.*;
import javax.swing.tree.*;

public class GetIcon extends JFrame
{
    public GetIcon()
    {
       super("Tree Test Example");
    }

    public static void main(String[] args)
    {
       GetIcon myIcon = new GetIcon();
       myIcon.init();
    }

    public void init()
    {

      setSize(300, 250);
      addWindowListener(new WindowAdapter()
             {
                public void windowClosing(WindowEvent e)
               {
                    System.exit(0);
               }
            });

      //Create the nodes.
      DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root Node");
      root.insert(new DefaultMutableTreeNode("one"), 0);
      DefaultMutableTreeNode two = new DefaultMutableTreeNode("two");
      two.insert(new DefaultMutableTreeNode("four"), 0);
      two.insert(new DefaultMutableTreeNode("five"), 1);
      root.insert(two, 1);
      root.insert(new DefaultMutableTreeNode("three"), 2);
      //Create a tree that allows one selection at a time.
      JTree tree = new JTree(root);

      DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();
      renderer.setLeafIcon(new ImageIcon("images/Leaf.gif"));
      renderer.setOpenIcon(new ImageIcon("images/OpenFolder.gif"));
      renderer.setClosedIcon(new ImageIcon("images/ClosedFolder.gif"));
      tree.setCellRenderer(renderer);

      tree.setShowsRootHandles(true);
      tree.setRowHeight(25);
      tree.getSelectionModel().setSelectionMode
                (TreeSelectionModel.SINGLE_TREE_SELECTION);
      getContentPane().add(tree, BorderLayout.CENTER);
      setVisible(true);
    }
}