Java Utililty Methods JTree Model

List of utility methods to do JTree Model

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Description

The list of methods to do JTree Model are organized into topic(s).

Method

voidappendTreeNodes(TreeModel model, Object node, StringBuilder builder, String indent)
append Tree Nodes 
builder.append(NEWLINE);
builder.append(indent);
if (node instanceof Component) {
    builder.append(node.toString());
    appendComponentStructure((Component) node, builder, "|   " + indent);
} else {
    builder.append(node.toString());
    builder.append("  (");
...
ObjectfindChildNode(TreeModel model, Object node, String text)
Returns the node with the given text below the given node in the specified TreeModel 
for (int i = 0; i < model.getChildCount(node); i++) {
    Object currNode = model.getChild(node, i);
    if (currNode.toString() != null && currNode.toString().equals(text))
        return currNode;
return null;
ObjectfindChildNode(TreeModel model, Object node, String text)
find Child Node 
for (int i = 0; i < model.getChildCount(node); i++) {
    Object currNode = model.getChild(node, i);
    if (currNode.toString() != null && currNode.toString().equals(text))
        return currNode;
return null;
DefaultMutableTreeNodefindTreeNode(TreeModel model, Object obj)
Given an obj, find the treeNode that holds it. 
DefaultMutableTreeNode result = null;
List nodesResult = new ArrayList();
nodesResult = getAllTreeNodes(model);
for (Iterator iter = nodesResult.iterator(); iter.hasNext();) {
    DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode) iter.next();
    Object userObj = treeNode.getUserObject();
    if (obj.equals(userObj)) {
        result = treeNode;
...
ListgetAllTreeNodes(TreeModel model)
Get a flat list of all the treeNodes 
return getAllTreeNodes(model, 1, null, null);
int[]getTreeIndents(TreeModel in)
return the size of a tree starting at a specific root 
int[] ret = new int[getTreeModelSize(in)];
setTreeIndents(in, in.getRoot(), ret, 0, 0);
return (ret);
intgetTreeModelSize(TreeModel in)
return the size of a tree model 
Object root = in.getRoot();
if (root == null)
    return (0);
return (getTreeModelSize(in, root));
booleanisTreePathInModel(TreeModel treeModel, TreePath treePath)
is Tree Path In Model 
if (treeModel == null)
    return false;
if (treePath == null)
    return false;
TreePath parentPath = treePath.getParentPath();
if (parentPath == null) {
    return treeModel.getRoot() == treePath.getLastPathComponent();
if (!isTreePathInModel(treeModel, parentPath))
    return false;
Object node = treePath.getLastPathComponent();
Object parent = parentPath.getLastPathComponent();
return treeModel.getIndexOfChild(parent, node) >= 0;
voidlogTreeNodes(TreeModel model, Object node, String indent)
log Tree Nodes 
logToConsole(indent + node.toString());
for (int i = 0; i < model.getChildCount(node); i++)
    logTreeNodes(model, model.getChild(node, i), "|   " + indent);
voidnodesChanged(DefaultTreeModel rightTreeModel)
nodes Changed 
DefaultMutableTreeNode root = (DefaultMutableTreeNode) rightTreeModel.getRoot();
Enumeration enumeration = root.breadthFirstEnumeration();
while (enumeration.hasMoreElements()) {
    DefaultMutableTreeNode defaultMutableTreeNode = (DefaultMutableTreeNode) enumeration.nextElement();
    rightTreeModel.nodeChanged(defaultMutableTreeNode);