请教：怎样给树的不同节点加上浮动的提示信息？

Question

ToolTipManager.sharedInstance().registerComponent(jTree);
jTree.setCellRenderer(new DefaultTreeCellRenderer(){
      public Component getTreeCellRendererComponent(
                        JTree tree,
                        Object value,
                        boolean selected,
                        boolean expanded,
                        boolean leaf,
                        int row,
                        boolean hasFocus) {
        Component c=super.getTreeCellRendererComponent(tree,value,selected,expanded,leaf,row,hasFocus);
        setToolTipText(value.toString());
        return c;
      }
    });

Answer 1

geyf(其实我也不会)  正解先要注册一下：ToolTipManager.sharedInstance().registerComponent(component);