2 import java.util.Vector;
4 public class FlatNode {
8 public String toString() {
11 public int numNext() {
14 public FlatNode getNext(int i) {
15 return (FlatNode) next.get(i);
18 public int numPrev() {
21 public FlatNode getPrev(int i) {
22 return (FlatNode) prev.get(i);
25 public void addNext(FlatNode n) {
29 protected void addPrev(FlatNode p) {