Thread: trouble linking directory to buckets in extendable hashing

I'm trying to implement my own extendable hashing method in my program to practice and better understand extendable hashing but after creating the bucket class and directory class and the hash function, I have no idea how to actually link the directory to the buckets.

Directory class

public class Directory {
 
    /* Instance Variables */
    int GlobalDepth = 1;
    int directories[];
 
    public Directory() {
        int temp = (int)Math.pow(2, GlobalDepth);
 
        loadDirectories(temp);
 
    }
 
    public void loadDirectories(int n) {
        int temp[] = new int[n * 2];
 
        for (int i = 0; i < n; i ++) {
            String BinaryKey = Integer.toBinaryString(i);
            String tempKey = BinaryKey.substring(0, this.GlobalDepth);
            int depthKey = Integer.parseUnsignedInt(tempKey);
 
            temp[i] = depthKey;
 
        }
 
        this.directories = temp;
 
    }
 
    public void increaseGlobalDepth() {
        this.GlobalDepth ++;
 
        loadDirectories((int)(Math.pow(2, this.GlobalDepth)));
 
    }

Bucket class

public class Bucket {
 
    /* Instance Variables */
    private SomeObject[] item; // class to hold all the required info
    private int Key, MaxBucketsize, LocalDepth = 1;
    //Bucket next;
 
    public Bucket() {
 
    }
 
    public Bucket(int BucketSize) {
        this.item = new SomeObject[BucketSize]; // Initalises the number of items held in the bucket
        this.MaxBucketsize = BucketSize; // Stores the max number of items that can be held in the bucket
 
    }
 
    public SomeObject[] getAllObjects() {
        return this.item;
 
    }
 
    public boolean addSomeObjects(int key, SomeObject item) {
        boolean inserted = false;
 
        for (int i = 0; i < this.MaxBucketsize; i ++) {
            if (this.item[i] == null) { // only inserts if there is an empty/null spot in the bucket
                this.item[i] = item;
                this.item[i].setKey(key);
 
                inserted = true;
 
                break;
 
            }
 
        }
 
        return inserted;
 
    }

So now that I have the 2 classes, how would i go about actually linking them together?

My bad if this is not the sub forum to ask this question in, just joined.

Extendable hashing as described on this wikipedia page: https://en.wikipedia.org/wiki/Extendible_hashing and https://www.geeksforgeeks.org/extend...roach-to-dbms/. I do have a main method but I don't have a method to actually implement this as I said, I have no idea how to link the directory to the buckets which is required to properly store the data and to test the program in some way.