https://github.com/eclipse/eclipse-collections/eclipse-collections-api: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
/*
 * Copyright (c) 2015 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */


This package contains interfaces for Bag API.

 A Bag is a Collection which contains elements that are unordered, and may contain duplicate entries. It adds a protocol for adding, removing, and determining the number of occurrences for an item. 

    This package contains 3 interfaces:

    
    
  •  Bag - contains the common API for Mutable and Immutable Bag. 
    • 
    
  •  MutableBag - a Bag whose contents can be altered after initialization. 
    • 
    
  •  ImmutableBag - a Bag whose contents cannot be altered after initialization. 
    • 



/**
 * This package contains interfaces for Bag API.
 * <p>
 *     A Bag is a {@link java.util.Collection} which contains elements that are unordered, and may contain duplicate entries. It adds a protocol for
 * adding, removing, and determining the number of occurrences for an item.
 * <p>
 *     This package contains 3 interfaces:
 * <ul>
 *     <li>
 *          {@link org.eclipse.collections.api.bag.Bag} - contains the common API for Mutable and Immutable Bag.
 *     </li>
 *     <li>
 *          {@link org.eclipse.collections.api.bag.MutableBag} - a Bag whose contents can be altered after initialization.
 *     </li>
 *     <li>
 *          {@link org.eclipse.collections.api.bag.ImmutableBag} - a Bag whose contents cannot be altered after initialization.
 *     </li>
 * </ul>
 */
package org.eclipse.collections.api.bag;