Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: LGPL 

import java.util.LinkedHashMap;

import java.util.Map;

import java.util.function.Supplier;

public class Main {
    /**
     * The size increase of the created sets and maps to compensate the not full load factor of the maps and sets.
     */
    private static final float SIZE_NORMALIZATION = 1.1f;
    /** The load factor for maps and sets. */
    private static final float LOAD_FACTOR = 0.95f;

    /**
     * Create a supplier that provides {@link LinkedHashMap} of the given size.
     *
     * @param <K>
     *            the key type
     * @param <V>
     *            the value type
     * @param size
     *            the size of the new map
     * @return the supplier
     * @see #createLinkedHashMap(int)
     */
    public static <K, V> Supplier<Map<K, V>> provideLinkedHashMap(int size) {
        return () -> createLinkedHashMap(size);
    }

    /**
     * Creates the linked hash map instance that will hold the given amount of elements. The returned instance is
     * optimized for that size and will not grow until the given number of elements are added.
     * <p>
     * The method is same as <code>new LinkedHashMap&lt;K, V&gt;((int) (size * 1.1), 0.95f)</code>
     *
     * @param <K>
     *            the key type
     * @param <V>
     *            the value type
     * @param size
     *            the preferred size
     * @return the map instance
     */
    public static <K, V> Map<K, V> createLinkedHashMap(int size) {
        return new LinkedHashMap<>((int) (size * SIZE_NORMALIZATION), LOAD_FACTOR);
    }
}