The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.
This is a feature and maintenance release. Java 8 or later is required.
Changes in this version
-----------------------
New features
------------
* LayerManager.Builder implements Supplier. Thanks to Gary Gregory.
* Add CollectionUtils.duplicateList(Collection). Thanks to Gary Gregory, hemanth0525.
* Add CollectionUtils.duplicateSet(Collection). Thanks to Gary Gregory, hemanth0525.
* Add CollectionUtils.duplicateSequencedSet(Collection). Thanks to Gary Gregory, hemanth0525.
* Add HashBag.HashBag(Iterable). Thanks to Gary Gregory.
* Add TreeBag.TreeBag(Iterable). Thanks to Gary Gregory.
* COLLECTIONS-858: Add CartesianProductIterator #509. Thanks to Alexey Pelykh, Alex Herbert, Gary Gregory.
* Add missing methods in AbstractMapTests. Thanks to Gary Gregory.
* COLLECTIONS-700: Add ConcurrentReferenceHashMap. Thanks to Gary Gregory.
* Add commons.easymock.version to parameterize EasyMock version. Thanks to Gary Gregory.
* COLLECTIONS-869: Add org.apache.commons.collections4.IteratorUtils.chainedIterator(Iterator<? extends Iterator<? extends E>>). Thanks to Gary Gregory.
* COLLECTIONS-533: Add ArrayListValuedLinkedHashMap #560. Thanks to Peter De Maeyer.
* Add missing test AbstractIteratorTest.testForEachRemaining(). Thanks to Gary Gregory.
* Add FilterIterator.removeNext() #564. Thanks to Gary Gregory, Claude Warren.
* COLLECTIONS-870: Add ExtendedIterator and tests #564. Thanks to Claude Warren, Gary Gregory.
* Refactor ExtendedIterator and FilterIterator with a new interface IteratorOperations. Thanks to Gary Gregory.
* COLLECTIONS-871: Add LinkedHashSetValuedLinkedHashMap #565. Thanks to Peter De Maeyer.
Fixed Bugs
----------
* COLLECTIONS-857: Complete bloom filter documentation #507. Thanks to Claude Warren.
* Package private AbstractEmptyIterator implements ResettableIterator so subclasses don't. Thanks to Gary Gregory.
* Deprecate AbstractEmptyIterator.add(E) without replacement. Thanks to Gary Gregory.
* Add missing Javadocs. Thanks to Gary Gregory.
* PatriciaTrie constructor reuse the stateless singleton StringKeyAnalyzer.INSTANCE. Thanks to Gary Gregory.
* Deprecate StringKeyAnalyzer.StringKeyAnalyzer() in favor of StringKeyAnalyzer.INSTANCE. Thanks to Gary Gregory.
* [Functional] FunctorUtils.validate(Closure...) is now FunctorUtils.validate(Consumer...). Thanks to Gary Gregory.
* [Functional] FunctorUtils.validate(Predicate...) is now FunctorUtils.validate(java.util.function.Predicate...). Thanks to Gary Gregory.
* [Functional] FunctorUtils.validate(Transformer...) is now FunctorUtils.validate(Function...). Thanks to Gary Gregory.
* Increase test coverage for ListUtils #517. Thanks to Dávid Szigecsán. Gary Gregory.
* Use the Junit (Jupiter) API #518. Thanks to Dávid Szigecsán.
* BloomFilterExtractor.flatten() should throw an exception instead of returning null. Thanks to Gary Gregory, Alex Herbert.
* Improve WrappedBloomFilterTest. All tests now assert copy() the same way. Thanks to Gary Gregory, Claude Warren.
* COLLECTIONS-860: Javadoc CollectionBag.add* to throw ClassCastException. Thanks to Gary Gregory, Daniele.
* Fix generics in IteratorChain.IteratorChain(Collection). Thanks to Gary Gregory.
* Fix generics in org.apache.commons.collections4.IteratorUtils.chainedIterator(Collection). Thanks to Gary Gregory.
* COLLECTIONS-856: Javadoc: Document interaction between peek and filter iterator #515. Thanks to Benjamin Confino, Gary Gregory.
* COLLECTIONS-815: Javadoc: Update ClosureUtils Javadoc to match runtime. Thanks to Elia Bertolina, Gary Gregory.
* COLLECTIONS-815: Javadoc: Update ClosureUtils Javadoc to match runtime. Thanks to Gary Gregory.
* COLLECTIONS-777: Migrate to JUnit 5. Thanks to Gary Gregory.
* Fix NullPointerException in FilterIterator.setNextObject(). Thanks to Gary Gregory.
* EqualPredicate.test(Object) should return true if the parameter is the same object as given the constructor. Thanks to Gary Gregory.
Changes
-------
* Bump org.apache.commons:commons-parent from 71 to 78 #534, #545, #550 #555, #566. Thanks to Gary Gregory.
* COLLECTIONS-857: Update bloom filter documentation #508. Thanks to Claude Warren.
* Bump commons-codec:commons-codec from 1.17.0 to 1.17.1 #514. Thanks to Dependabot, Gary Gregory.
* Bump org.apache.commons:commons-lang3 from 3.14.0 to 3.17.0 #516, #525, #535. Thanks to Dependabot, Gary Gregory.
* Bump org.hamcrest:hamcrest from 2.2 to 3.0 #522, #532. Thanks to Dependabot, Gary Gregory.
* Bump com.google.guava:guava-testlib from 33.2.1-jre to 33.3.1-jre #531, #549. Thanks to Dependabot, Gary Gregory.
* Bump MathJax from 2.7.2 to 2.7.9. Thanks to Gary Gregory.
* [test] Bump org.easymock:easymock from 5.3.0 to 5.5.0 #521, #576. Thanks to Dependabot, Gary Gregory.
* [test] Bump commons-io:commons-io from 2.16.1 to 2.18.0 #544, #575. Thanks to Dependabot, Gary Gregory.
For complete information on Apache Commons Collections, including instructions on how to submit bug reports,
patches, or suggestions for improvement, see the Apache Commons Collections website:
The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.
This milestone release requires Java 8 and adds the package `org.apache.commons.collections4.bloomfilter`.
Changes in this version
-----------------------
New features
------------
* COLLECTIONS-852: Add layered Bloom filter clean method #476. Thanks to Claude Warren, Alex Herbert.
* COLLECTIONS-842: Deprecate Lists incompatible with Java 21, add new variant of AbstractLinkedList #485. Thanks to Julian Reschke.
Fixed Bugs
----------
* Deprecate Closure in favor of java.util.function.Consumer. Thanks to Gary Gregory.
* Deprecate Factory in favor of java.util.function.Supplier. Thanks to Gary Gregory.
* Deprecate Predicate in favor of java.util.function.Predicate. Thanks to Gary Gregory.
* Deprecate Transformer in favor of java.util.function.Function. Thanks to Gary Gregory.
* COLLECTIONS-853: Change LayerManager to use List and added generics to LayerdedBloomFilter #481. Thanks to Claude Warren, Alex Herbert, Gary Gregory.
* Fix PMD UselessOverridingMethod in PropertiesFactory.EmptyProperties. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in AbstractHashedMap. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in AbstractLinkedMap. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in CaseInsensitiveMap. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in CollectionUtils. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in DefaultEquator. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in IndexUtils. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in LinkIterator. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in MapUtils. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in PredicateUtils. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in ReferenceMapIterator. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in StringKeyAnalyzer. Thanks to PMD, Gary Gregory.
* Fix PMD UnnecessaryFullyQualifiedName in TransformerUtils. Thanks to PMD, Gary Gregory.
* COLLECTIONS-854: Renaming bloomfilter components and methods as per ticket #492. Thanks to Claude Warren, Alex Herbert, Gary Gregory.
* Fix Java 22 builds through Easymock upgrade #502. Thanks to Gary Gregory.
* COLLECTIONS-855: Fixed hashing calculation as per report #501. Thanks to Claude Warren, Alex Herbert, Gary Gregory.
Changes
-------
* Bump org.apache.commons:commons-parent from 67 to 71 #473, #503. Thanks to Dependabot, Gary Gregory.
* Bump tests commons-io:commons-io from 2.16.0 to 2.16.1 #475. Thanks to Dependabot.
* Bump optional commons-codec:commons-codec from 1.16.1 to 1.17.0. Thanks to Dependabot.
* Bump com.google.guava:guava-testlib from 33.1.0-jre to 33.2.1-jre #487, #500. Thanks to Dependabot.
* Bump org.easymock:easymock from 5.2.0 to 5.3.0 #502. Thanks to Dependabot.
For complete information on Apache Commons Collections, including instructions on how to submit bug reports,
patches, or suggestions for improvement, see the Apache Commons Collections website:
The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.
This milestone release requires Java 8 and adds the package `org.apache.commons.collections4.bloomfilter` for review.
Changes in this version
-----------------------
New features
------------
* COLLECTIONS-843: Implement Layered Bloom filter #402. Thanks to Claude Warren, Alex Herbert, Gary Gregory.
* COLLECTIONS-748: Let org.apache.commons.collections4.properties.[Sorted]PropertiesFactory accept XML input. Thanks to Gary Gregory.
* COLLECTIONS-772: Add private constructor to ArrayUtils; better Javadocs, #195. Thanks to Arturo Bernal, Alex Herbert, Gary Gregory, Bruno P. Kinoshita.
* COLLECTIONS-760: Add tests for MapUtils. Thanks to Isira Seneviratne.
* Test subMap and tailMap #94. Thanks to dota17.
* Add junit for add, remove, setCount and entrySet in the UnmodifiableMultiSetTest #95. Thanks to dota17.
* Add two test cases in UnmodifiableQueueTest #96. Thanks to dota17.
* Update two test cases in AbstractMultiValuedMapTest testPutAll_map1 testPutAll_map2 #97. Thanks to dota17.
* Add a test case for AbstractMultiValuedMapTest testToString() #100. Thanks to dota17.
* Add a test case AbstractMultiValuedMapTest#testMultiValuedMapIterator() #108. Thanks to dota17.
* Add junit for getWithNull and subList in LazyListTest; #103. Thanks to dota17.
* Add test cases to ArrayListValuedHashMapTest; #106. Thanks to dota17.
* Add test cases in UnmodifiableMultiValuedMapTest; #102. Thanks to dota17.
* COLLECTIONS-674: Add CollectionUtils removeRange, removeCount #91. Thanks to dota17.
* Add ListUtils.getFirst() and getLast(). Thanks to Gary Gregory.
* Add singleton ObjectToStringComparator.INSTANCE. Thanks to Gary Gregory.
* Add github/codeql-action.
* COLLECTIONS-811: Add Guava testlib tests. Thanks to Ben Manes.
* COLLECTIONS-728: Add BloomFilter contribution. Thanks to Claude Warren.
* COLLECTIONS-726: Add lambdas function to provide default values in MapUtils #81. Thanks to liuhaozzu, Gary Gregory.
* Add three test cases in UnmodifiableQueueTest #105. Thanks to dota17.
* COLLECTIONS-744: Add org.apache.commons.collections4.EnumerationUtils.asIterable(Enumeration). Thanks to Gary Gregory.
* COLLECTIONS-746: Add org.apache.commons.collections4.properties.PropertiesFactory.EMPTY_PROPERTIES. Thanks to Gary Gregory.
* COLLECTIONS-746: Add PropertiesFactory. Thanks to Gary Gregory.
* Add org.apache.commons.collections4.properties.OrderedProperties and OrderedPropertiesFactory. Thanks to Gary Gregory.
* Make AbstractPatriciaTrie public #407. Thanks to Vadim, Claude Warren, Gary Gregory, Alex Herbert.
* Add test cases for indexOf and contains method of ArrayUtils class #215. Thanks to Ajay Kumar Jha, Bruno P. Kinoshita, Claude Warren.
* Add Maven property project.build.outputTimestamp for build reproducibility. Thanks to Gary Gregory.
Fixed Bugs
----------
* COLLECTIONS-780: Use assertThrows V2. Thanks to Arturo Bernal.
* COLLECTIONS-778: Use assertThrows. Thanks to Arturo Bernal.
* COLLECTIONS-771: Fix flaky AbstractMultiValuedMapTest#testToString. Thanks to Xin Tong.
* COLLECTIONS-769: Fix flaky UnmodifiableMultiValuedMapTest. Thanks to Xin (Cynthia) Tong.
* COLLECTIONS-764: Refine javadoc and fix typos. Thanks to XenoAmess.
* COLLECTIONS-765: Update Javadoc of ListIteratorWrapper#remove. Thanks to Tobias Kiecker.
* COLLECTIONS-708: Add hashCode method to CollectionUtils that supports an equator parameter. Thanks to dota17.
* COLLECTIONS-759: Fix checkstyle issues regarding missing newline at end of file, and CRLF vs LF.
* COLLECTIONS-727: A potential misleading comment #82. Thanks to XiangzheXu, XZ-X.
* COLLECTIONS-679: Using existing class in example given in Javadocs. #85. Thanks to David Mollitor, Mikko Maunu.
* COLLECTIONS-729: Add test cases to IteratorUtilsTest #86. Thanks to dota17.
* Fix typos in release notes and Javadoc for AbstractHashedMap and AbstractHashedMapTest #88. Thanks to dota17.
* COLLECTIONS-740: Add missing @throws comment for SwitchTransformer.switchTransformer. #124. Thanks to Pengyu Nie.
* COLLECTIONS-739: Fix inconsistent @throws comments in DefaultedMap #123. Thanks to Pengyu Nie.
* Fix links to release notes and update contents for 4.4 #127. Thanks to Dominik Stadler.
* Fix checkstyle syntax (was scope, is now accessModifiers) via PR #235. Thanks to Jin Xu.
* COLLECTIONS-786: Fix PassiveExpiringMap documentation for methods that involve accessing the entire map. Thanks to vandrewskis.
* SortedProperties should sort entrySet() as well as keys() #256. Thanks to Michael Berry.
* COLLECTIONS-796: SetUniqueList.createSetBasedOnList doesn't add list elements to return value. Thanks to Clemens Kurz.
* COLLECTIONS-799: UnmodifiableNavigableSet can be modified by pollFirst() and pollLast(). Thanks to Stefano Cordio.
* Use Java 8 and method reference. #274. Thanks to Arturo Bernal.
* COLLECTIONS-788: Use Java 8 features #228. Thanks to Arturo Bernal.
* COLLECTIONS-807: Upgraded org.junit.Test to org.junit.jupiter.api.Test #295, #304. Thanks to Pradeesh Kumar, samabcde.
* COLLECTIONS-802: ReferenceMap iterator remove violates contract #300. Thanks to samabcde, Ben Manes.
* COLLECTIONS-812: Fix flaky EmptyPropertiesTest#testSave. Thanks to Ng Tsz Sum.
* Use java.lang.Objects#equals; eliminate a couple of nulls #307. Thanks to Steve Bosman.
* COLLECTIONS-814: CollectionUtils.removeAll() not throwing NPE #340. Thanks to angusdev.
* Fix minor typos #323 Thanks to Marc Wrobel.
* AbstractReferenceMap.SoftRef implements hashCode() but not equals(). Thanks to Gary Gregory.
* AbstractReferenceMap.WeakRef implements hashCode() but not equals(). Thanks to Gary Gregory.
* Use Java style array decelerations #362. Thanks to Arturo Bernal.
* COLLECTIONS-806: Remove use of JUnit4 junit.framework.Test class #371. Thanks to Piyush Sagar.
* COLLECTIONS-839: Migrate Map tests to JUnit 5 assertions #391. Thanks to Sam Ng, Gary Gregory, Bruno P. Kinoshita.
* COLLECTIONS-835: Fix links in javadoc and documentations #325. Thanks to Marc Wrobel.
* Correct test of Collection toArray(Object[]) vs toArray() to optionally ignore array order.
Ordering is not specified for some collections such as Bags. Thanks to Partha Protim Paul.
* COLLECTIONS-836: Correct test of BidiMap to optionally ignore testing the key set matches the values order.
Ordering is not specified for some BidiMaps such as DualHashBidiMaps. Thanks to Anant Dahiya.
* COLLECTIONS-737: Return 0 immediately if the given iterable is null in IterableUtils#size. Update tests. Thanks to Prodigysov.
* COLLECTIONS-697: JavaDoc for FixedSizeList should warn that modifying underlying list is still allowed and is not prevented Thanks to Ranjan George.
* Fill in some map test cases #104. Thanks to dota17.
* COLLECTIONS-738: Remove the redundant assertNull in IterableUtilsTest.find and update Javadocs. Thanks to Pengyu Nie.
* COLLECTIONS-724: Simplify two remove-if loops #77. Thanks to Eitan Adler.
* Fix inconsistent @throws comments in ListOrderedSet #125. Thanks to Chen.
* COLLECTIONS-704: Update size to capacity for GrowthList #90. Thanks to dota17.
* TransformedSortedBagTest should work with TransformedSortedBag, not TransformedBag #98. Thanks to dota17.
* Remove the parentheses in the error message in CircularFifoQueue #107. Thanks to dota17.
* COLLECTIONS-747: MultiKey.getKeys class cast exception. Thanks to Gary Gregory, Walter Laan.
* COLLECTIONS-759: Use newline at end of file, and convert to Unix (LF instead of CRLF) fixing checkstyle #147. Thanks to Bruno P. Kinoshita.
* Fixed the typo and deal the NPE with Objects.requireNonNull #118. Thanks to Chen.
* COLLECTIONS-757: Javadoc BidiMap classes #146. Thanks to Chen.
* COLLECTIONS-773: Assert ensureCapacity #198. Thanks to Martin Monperrus.
* COLLECTIONS-775: Fix flaky CollectionUtilsTest.getFromMap() #200. Thanks to Xin Tong, Bruno P. Kinoshita, Gary Gregory.
* Minor Improvements #203, #208. Thanks to Arturo Bernal.
* Fix typo erroring -> erring #202. Thanks to EruDev.
* COLLECTIONS-734: Encountered an IllegalStateException while traversing with Flat3Map.entrySet(). #115. Thanks to Chen.
* Better NPE messages in CollectionUtils with Objects.requireNonNull #117. Thanks to Chen, Bruno P. Kinoshita, Gary Gregory, Michael Osipov.
* Improve MapUtils with the null checks, add JUnit for it and add Javadoc for the parameter indent. #126. Thanks to Chen.
* COLLECTIONS-793: Simplify Assertion. Thanks to Arturo Bernal.
* [StepSecurity] ci: Harden GitHub Actions #401. Thanks to step-security-bot, Gary Gregory.
* Fix punctuation and minor Javadoc issues #409. Thanks to Martin Wiesner, Bruno P. Kinoshita, Gary Gregory.
* Deprecate IterableUtils 0-argument constructor. Thanks to Gary Gregory.
* COLLECTIONS-850: Tests in org.apache.commons.collections4.multimap should not depend on map iteration order, see also #429. Thanks to Gary Gregory, Anirudh Madhavan.
* COLLECTIONS-850: Reimplement FixedOrderComparator#equals() and hashCode(), see also #392. Thanks to Gary Gregory, Saurabh Rahate.
Changes
-------
* Bump org.easymock:easymock from 4.0.2 to 5.2.0 #352, #355, #375, #414. Thanks to Gary Gregory, Dependabot.
* Bump actions/cache. Thanks to Dependabot, Gary Gregory.
* Bump actions/setup-java. Thanks to Dependabot, Gary Gregory.
* Bump actions/checkout. Thanks to Dependabot, Gary Gregory.
* Bump codecov/codecov-action. Thanks to Dependabot.
* Bump Apache commons-parent from 48 to 67. Thanks to Gary Gregory, Dependabot.
* Bump Jacoco from 0.8.4 to 0.8.8. Thanks to Gary Gregory.
* Bump tests from Apache Commons Lang 3.9 to 3.11. Thanks to Gary Gregory.
* Bump maven-checkstyle-plugin 3.1.0 to 3.2.1 #379. Thanks to Gary Gregory.
* Bump checkstyle from 8.29 to 9.3. Thanks to Gary Gregory.
* COLLECTIONS-754: Bump to JUnit v5.6.2 #136. Thanks to John Patrick.
* COLLECTIONS-777: Migrate JUnit 4.12 to 5.9.1 #324, #338. Thanks to John Patrick, Gary Gregory, Dependabot.
* COLLECTIONS-753: Bump Hamcrest to 2.2. Thanks to John Patrick.
* Remove deprecated sudo setting. #161. Thanks to dengliming.
* Bump tests from commons-io:commons-io 2.6 to 2.16.0 #180, #469. Thanks to Gary Gregory.
* Bump maven-pmd-plugin from 3.12.0 to 3.19.0 #167, #196, #253, #311, #334. Thanks to Dependabot, Gary Gregory.
* Bump optional commons-codec:commons-codec from 1.14 to 1.16.1. Thanks to Gary Gregory.
* Bump commons.junit.version from 5.6.2 to 5.8.2 #181 #213 #236 #252 #254 #268. Thanks to Dependabot.
* COLLECTIONS-774: Bump maven-antrun-plugin from 1.8 to 3.1.0 #170, #303. Thanks to Dependabot.
* Bump maven-checkstyle-plugin from 3.1.1 to 3.1.2 #211. Thanks to Dependabot.
* COLLECTIONS-779: Migrate assert to Assertions #209. Thanks to Arturo Bernal, Gary Gregory.
* COLLECTIONS-781: Add and use CollectionUtils.INDEX_NOT_FOUND constant. Thanks to Arturo Bernal, Gary Gregory.
* Bump commons-lang3 from 3.11 to 3.14.0. Thanks to Dependabot, Gary Gregory.
* COLLECTIONS-785: Add new variables to oac.collections4.CollectionUtils and use them in the code base. Thanks to Arturo Bernal.
* Bump easymock from 4.2 to 4.3 #226. Thanks to Dependabot.
* Bump maven-pmd-plugin from 3.15.0 to 3.16.0 #286. Thanks to Dependabot.
* Bump commons-parent from 52 to 58 #299, #368, #373, #393. Thanks to Dependabot, Gary Gregory.
* Bump japicmp from 0.15.4 to 0.16.0. Thanks to Dependabot.
* Bump pmd from 6.46.0 to 6.52.0 #318, #327, #333, #347. Thanks to Dependabot, Gary Gregory.
* Bump guava-testlib from 31.1-jre to 33.1.0-jre #394, #395, #404, #405, #411, #423, #438, #462. Thanks to Dependabot.
For complete information on Apache Commons Collections, including instructions on how to submit bug reports,
patches, or suggestions for improvement, see the Apache Commons Collections website:
* COLLECTIONS-681: Add test for MultiSetUtils Thanks to Stephan Fuhrmann.
* COLLECTIONS-658: Add Automatic-Module-Name MANIFEST entry for Java 9 compatibility.
* COLLECTIONS-589: Add null-safe MapUtils.size(Map<?, ?>) method. Thanks to Gary Gregory.
* COLLECTIONS-586: PatriciaTrie prefixMap clear throws NullPointerException. Thanks to Shailender Bathula, Gary Gregory.
* COLLECTIONS-654: Add class SortedProperties to sort keys.
* COLLECTIONS-668: Add CollectionUtils containsAny method for primitive array: org.apache.commons.collections4.CollectionUtils.containsAny(Collection<?>, T...). Thanks to Gary Gregory.
* COLLECTIONS-575: Synchronized queue wrapper in QueueUtils. Thanks to Guram Savinov, Grzegorz Rożniecki, Bruno P. Kinoshita, Gary Gregory.
* COLLECTIONS-670: Add org.apache.commons.collections4.IteratorUtils.first(Iterator). Thanks to Gary Gregory.
* COLLECTIONS-671: Add org.apache.commons.collections4.IterableUtils.first(Iterable). Thanks to Gary Gregory.
Fixed Bugs
----------
* COLLECTIONS-599: HashEntry array object naming data initialized with double the size during deserialization. Thanks to Tejas Patel, Saleem Akbar, Gary Gregory.
* COLLECTIONS-662: Unit tests MapUtilsTest and ListIteratorWrapperTest no longer fail on Java 9. Thanks to Vamsi Kavuri.
* COLLECTIONS-661: Intermittent test failures in Windows for HashSetValuedHashMap.
* COLLECTIONS-660: Uncomment test in AbstractMapTest regarding LRUMap equals.
* COLLECTIONS-656: Fix site build on Java 8.
* COLLECTIONS-653: Update Javadoc to Build on Java 1.8.
* COLLECTIONS-606: Build status, Coverage status and Maven central weren't in README.md Thanks to Vamsi Kavuri.
* COLLECTIONS-594: Website spelling error: MultiValuedMapList. Thanks to Javen O'Neal.
* COLLECTIONS-597: Correction of Javadoc for org.apache.commons.collections4.functors.CatchAndRethrowClosure. Thanks to Enrique.
* COLLECTIONS-678: The verification of unsupported iterator methods is not complete. Thanks to Oscar Luis Vera Pérez.
* COLLECTIONS-673: ListUtils.partition potential integer overflow. Thanks to John Mark, Stephan Fuhrmann.
Changes
-------
* COLLECTIONS-602: Improve efficiency of DefaultedMap.get. Thanks to John Mark.
* COLLECTIONS-603: Small improvements for generics, conditional statements, and warnings suppressions. Thanks to Artem Konovalov.
* COLLECTIONS-655: Update platform from Java 6 to Java 7.
* COLLECTIONS-666: org.apache.commons.collections4.ListUtils.union(List, List) should pre-allocate result list. Thanks to BELUGA BEHR.
* COLLECTIONS-669: Update org.apache.commons.collections4.CollectionUtils.addAll(Collection<C>, C[]) to addAll(Collection<C>, C...). Thanks to BELUGA BEHR, Gary Gregory.