Method rehash

vm/JavaAPI/src/java/util/Hashtable.java:744–772

Increases the capacity of this Hashtable. This method is called when the size of this Hashtable exceeds the load factor.

()

     * when the size of this {@code Hashtable} exceeds the load factor.
     */
    protected void rehash() {
        int length = (elementData.length << 1) + 1;
        if (length == 0) {
            length = 1;
        }
        int newFirst = length;
        int newLast = -1;
        Entry<K, V>[] newData = newElementArray(length);
        for (int i = lastSlot + 1; --i >= firstSlot;) {
            Entry<K, V> entry = elementData[i];
            while (entry != null) {
                int index = (entry.getKeyHash() & 0x7FFFFFFF) % length;
                if (index < newFirst) {
                    newFirst = index;
                }
                if (index > newLast) {
                    newLast = index;
                }
                Entry<K, V> next = entry.next;
                entry.next = newData[index];
                newData[index] = entry;
                entry = next;
            }
        }
        firstSlot = newFirst;
        lastSlot = newLast;
        elementData = newData;
        computeMaxSize();
    }

    /**
     * Removes the key/value pair with the specified key from this