Multiple Point Hashtable Access

Question

Ok, I have a class that I want to store a hashtable in, and let's say that class is in Hash.java. I need one other class (Main.java) to be able to add, and possibly retrieve data from that hashtable. Then I have a class that has multiple instances of itself created (Access.java), which all need to be able to access data in the hashtable. I need it so that when Main.java adds a new element to the hashtable in Hash.java, Main.java and all instances of Access.java need to be able to retrieve that data. The only solution I can think of would be to use an array to keep track of each instance of Access.java, then when Main.java makes an update to the hashtable, have each instance of Access.java do the same, but I don't want to do that. Maybe there's another method that doesn't use hashtables, but it has to have objects that can be accessed by names, not numbers like Arrays, and I can't use a database to store the information. Aside from that, I could always write the information to a file, but I wouldn't have a clue about how to access the items by a name, without reading in the whole file first.
Sorry for the extra-long post, but I wanted to explain it (hopefully) well enough.

Answer 1

Okay and good luck (it's not tested -:)
public class HashTable {
public class Access {
   private HashTable hashTable;
   public Access(HashTable ht) { // constructor
      hashTable = ht;
public class Main {
   private HashTable hashTable;
   private int A = 10; // number of Access objects
   Access[] access = new Access[A]; // array of Access objects
   public Main { // constructor
      hashTable = new HashTable(); // create HashTable     
      for (int i=0; i<A; i++) {
         access[i] = new Access(hashTable); // create Access objects and pass hashtable