title: Best way to implement tooltips for JTree?
body: <p>since JTree &amp; TreeModel don't provide tooltips straight out-of-the-box, what do you think, what would be the best way to have item-specific tooltips for JTree?</p>
  
  <p>Edit: (Answering my own question afterwards.) </p>
  
  <p>@Zarkonnen: Thanks for the getTooltipText idea. </p>
  
  <p>I found out another (maybe still a bit nicer) way with overriding DefaultTreeCellRenderer and thought to share it:</p>
  
  <pre><code>public class JTreeWithToolTips {
      private static class OwnRenderer extends DefaultTreeCellRenderer {
          @Override
          public Component getTreeCellRendererComponent(JTree tree, Object value,
                  boolean sel, boolean expanded, boolean leaf, int row,
                  boolean hasFocus) {
              setToolTipText("foobar" + row);
              return super.getTreeCellRendererComponent(tree, value, sel,
                      expanded, leaf, row, hasFocus);
          }
      }
  
      public static void main(String[] args) {
          JTree tree = new JTree(new Object[] { "foo", "bar", "foobar" });
          tree.setCellRenderer(new OwnRenderer());
          ToolTipManager.sharedInstance().registerComponent(tree);
  
          JFrame frame = new JFrame();
          frame.getContentPane().add(tree);
          frame.pack();
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setVisible(true);
      }
  }
  </code></pre>