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Basic utilities to compensate shortcomings of Java SE. Part of chicory.
There is a newer version: 0.36
/*
 * Copyright (c) 2012, Victor Nazarov 
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Victor Nazarov nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.github.sviperll.collection;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;

public class Collections {
    /** Created new mobifieble TreeMap instance */
    public static  Map newTreeMap() {
        return new TreeMap();
    }

    /** Created new mobifieble HashMap instance */
    public static  Map newHashMap() {
        return new HashMap();
    }

    /** Created new mobifieble TreeSet instance */
    public static  Set newTreeSet() {
        return new TreeSet();
    }

    /** Created new mobifieble HashSet instance */
    public static  Set newHashSet() {
        return new HashSet();
    }

    /** Created new mobifieble ArrayList instance */
    public static  List newArrayList() {
        return new ArrayList();
    }

    /** Created new mobifieble ArrayList instance of given capacity */
    public static  List newArrayList(int capacity) {
        return new ArrayList(capacity);
    }

    /** Created new mobifieble ArrayList instance with one given element */
    public static  List newArrayListOf(E e1) {
        List elist = newArrayList(1);
        elist.add(e1);
        return elist;
    }

    /** Created new mobifieble ArrayList instance with two given elements */
    public static  List newArrayListOf(E e1, E e2) {
        List elist = newArrayList(2);
        elist.add(e1);
        elist.add(e2);
        return elist;
    }

    /** Created new mobifieble ArrayList instance with three given elements */
    public static  List newArrayListOf(E e1, E e2, E e3) {
        List elist = newArrayList(3);
        elist.add(e1);
        elist.add(e2);
        elist.add(e3);
        return elist;
    }

    private Collections() {}
}