why does this create a null point exception
public ArrayList<K> keysAsList(){
ArrayList<K> temp =new ArrayList<K>();
MapNode t = root;
if (root !=null)
keysAsList(temp, t);
return temp;
}
privatevoid keysAsList(ArrayList<K> t, MapNode x){
t.add(x.key);
keysAsList(t, x.left);
keysAsList(t, x.right);
}
[709 byte] By [aditya15417a] at [2007-11-27 1:03:10] 