String nt = node.getUserObject().toString();
for (int j = i + 1; j <= root.getChildCount() - 1; j++) {
DefaultMutableTreeNode prevNode = (DefaultMutableTreeNode) root
.getChildAt(j);
String np = prevNode.getUserObject().toString();
String nt = node.getUserObject().toString();
for (int j = i + 1; j <= root.getChildCount() - 1; j++) {
DefaultMutableTreeNode prevNode = (DefaultMutableTreeNode) root
.getChildAt(j);
String np = prevNode.getUserObject().toString();