import javax.swing.JTree;
import javax.swing.text.Position;
import javax.swing.tree.TreePath;
public class Main {
public static void main(String[] argv) throws Exception {
JTree tree = new JTree();
int startRow = tree.getRowCount() - 1;
String prefix = "b";
TreePath path = tree.getNextMatch(prefix, startRow, Position.Bias.Backward);
System.out.println(path);
}
}