import javax.swing.JTextPane;
import javax.swing.text.JTextComponent;
import javax.swing.text.View;
public class Main {
public static void main(String[] argv) {
JTextComponent textComp = new JTextPane();
View v = textComp.getUI().getRootView(textComp);
walkView(v, 0);
}
public static void walkView(View view, int level) {
int n = view.getViewCount();
for (int i = 0; i < n; i++) {
walkView(view.getView(i), level + 1);
}
}
}