software-testing/project_task_sheets/phase_03/project_phase03_tasks/HashMap.java

import java.util.Map.Entry;

public class HashMap<K,V> {
	static final int MAXIMUM_CAPACITY = 1 << 10;
	transient Entry<K,V>[] table;
	int threshold;
	final float loadFactor;
	
    public HashMap(int initialCapacity, float loadFactor) {
        if (initialCapacity < 0)
            throw new IllegalArgumentException("Illegal initial capacity: " + initialCapacity);
        if (initialCapacity > MAXIMUM_CAPACITY)
            initialCapacity = MAXIMUM_CAPACITY;
        if (loadFactor <= 0 || Float.isNaN(loadFactor))
            throw new IllegalArgumentException("Illegal load factor: " + loadFactor);

        // Find a power of 2 >= initialCapacity
        int capacity = 1;
        while (capacity < initialCapacity)
            capacity <<= 1;
        this.loadFactor = loadFactor;
        threshold = (int)(capacity * loadFactor);
        table = new Entry[capacity];
    }
    
    public int getCapacity() {
    	return table.length;
    }
}