JTree Hide Show nodes

Question

Hi All
I have a JTree, and would like to hide some tree nodes based on a certain path, i have been using the setFilter and I can't seem to get to work.
Regards
M
Code fragment below: using the FilterTreeModel
void cmdShowSubset_actionPerformed(ActionEvent e) {
DefaultMutableTreeNode tn = new DefaultMutableTreeNode(value);
FilterTreeModel ftm = new FilterTreeModel(tn);
ftm.setFilterNode(tn);
Object[] oArray = new Object[1];
oArray[0]="ABC communications";
tp = new TreePath(oArray);
subTree.setSelectionPath(tp);
class FilterTreeModel
extends javax.swing.tree.DefaultTreeModel {
DefaultMutableTreeNode filterNode;
public FilterTreeModel(DefaultMutableTreeNode root) {
super(root);
public int getChildCount(Object obj) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) obj;
if (filterNode != null && !filterNode.isNodeDescendant(node)) {
if (node.isNodeDescendant(filterNode))
return 1;
return 0;
return super.getChildCount(node);
public Object getChild(Object obj, int num) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) obj;
if (filterNode != null && !filterNode.isNodeDescendant(node)) {
if (node.isNodeDescendant(filterNode)) {
TreeNode temp = filterNode;
while (!node.isNodeChild(temp)) {
temp = temp.getParent();
return temp;
return null;
return super.getChild(node, num);
public void setFilterNode(DefaultMutableTreeNode node) {
filterNode = node;
DefaultMutableTreeNode root = (DefaultMutableTreeNode)super.getRoot();
super.fireTreeStructureChanged(root, super.getPathToRoot(root), null, null);

Answer 1

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