2 import java.util.Vector;
4 public class FlatNode {
13 public String toString() {
16 public int numNext() {
19 public FlatNode getNext(int i) {
20 return (FlatNode) next.get(i);
23 public int numPrev() {
26 public FlatNode getPrev(int i) {
27 return (FlatNode) prev.get(i);
30 public void addNext(FlatNode n) {
34 protected void addPrev(FlatNode p) {