Java Utililty Methods JTree

List of utility methods to do JTree

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Description

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

Method

voidscrollTreeToSelectedRow(final JTree tree)
scroll Tree To Selected Row 
final int selectedRow = tree.getLeadSelectionRow();
if (selectedRow >= 0) {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            tree.scrollRectToVisible(tree.getRowBounds(selectedRow));
    });
voidsetComponentTreeEnabled(Component c, boolean enabled)
Enables or disables of the components in the tree starting with c . 
c.setEnabled(enabled);
Component[] children = getChildren(c);
if (children != null) {
    for (int i = 0; i < children.length; i++) {
        setComponentTreeEnabled(children[i], enabled);
voidsetLeftChildIndent(JTree tree, int indent)
Set's the left indent in pixels to use for the given JTree 's collapsed and expanded icon. 
((BasicTreeUI) tree.getUI()).setLeftChildIndent(indent);
voidsetToolTipOnTree(Container c, String tooltip)
Recurse the Component hierarchy, setting the tooltip of each component. 
for (int i = 0; i < c.getComponentCount(); i++) {
    Component child = c.getComponent(i);
    if (child instanceof Container) {
        setToolTipOnTree((Container) child, tooltip);
    if (child instanceof JComponent) {
        ((JComponent) child).setToolTipText(tooltip);
voidsetTreeEnabled(Container container, boolean enabled)
set Tree Enabled 
synchronized (container.getTreeLock()) {
    for (Component comp : container.getComponents()) {
        setComponentEnabled(comp, enabled);
TreeSelectionListenertreeListen(final ActionListener listener)
Wrapper for tree selection listeners. 
return new TreeSelectionListener() {
    public void valueChanged(TreeSelectionEvent e) {
        listener.actionPerformed(new ActionEvent(e.getSource(), 0, "bogus commandus"));
};
voidupMove(JTree tree)
up Move 
DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if (node == null)
    return;
if (node.isRoot())
    return;
DefaultMutableTreeNode parent = (DefaultMutableTreeNode) node.getParent();
int index = parent.getIndex(node);
if (index <= 0)
...