Java Utililty Methods JTree

TreePath rowPath = tree.getPathForRow(row);
StringBuffer buf = new StringBuffer();
int rowCount = tree.getRowCount();
for (int i = row; i < rowCount; i++) {
    TreePath path = tree.getPathForRow(i);
    if (i == row || isDescendant(path, rowPath)) {
        if (tree.isExpanded(path))
            buf.append("," + String.valueOf(i - row));
...

return mProjectTree;

ArrayList<String> list = new ArrayList<String>();
TreePath[] nodes = tree.getSelectionPaths();
for (int i = 0; i < nodes.length; i++) {
    TreePath temp = nodes[i];
    Object tempObj = temp.getLastPathComponent();
    DefaultMutableTreeNode treNode = (DefaultMutableTreeNode) tempObj;
    String device = String.valueOf(treNode.getUserObject());
    list.add(device);
...

int startDepth = tree.getPathForRow(startRow).getPathCount();
int last = tree.getRowCount();
int stopRow = last;
for (int i = startRow + 1; i < last; ++i) {
    int depth = tree.getPathForRow(i).getPathCount();
    if (depth <= startDepth) {
        stopRow = i;
        break;
...

String imageFileName = PATHFORIMAGEFILES + imageName;
ImageIcon treeImageIcon = null;
try {
    Vector v = new Vector();
    InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream(imageFileName);
    if (is == null)
        is = ClassLoader.getSystemResourceAsStream(PATHFORIMAGEFILES + "unknown.gif");
    is = new BufferedInputStream(is);
...

TreePath[] paths = tree.getSelectionPaths();
if (paths == null || paths.length == 0) {
    return null;
for (int i = 0; i < paths.length; i++) {
    TreePath path = paths[i];
    for (Object o : path.getPath()) {
        if (o.getClass().equals(type))
...

return UIManager.getColor("Tree.selectionBorderColor");

return (tree.getRowForLocation(location.x, location.y) != -1);

collapse(tree, depth);
expand(tree, depth);

Rectangle r = tree.getBounds();
int rowVisible = tree.getVisibleRowCount();
Rectangle rv = new Rectangle(r.width, r.height + rowVisible);
tree.paintImmediately(rv);