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## Core Java Collections Cookbooks and Examples

### Relevant Articles: 
- [Immutable ArrayList in Java](http://www.baeldung.com/java-immutable-list)
- [Guide to the Java ArrayList](http://www.baeldung.com/java-arraylist)
- [Random List Element](http://www.baeldung.com/java-random-list-element)
- [Java - Combine Multiple Collections](http://www.baeldung.com/java-combine-multiple-collections)
- [Removing all nulls from a List in Java](http://www.baeldung.com/java-remove-nulls-from-list)
- [Removing all duplicates from a List in Java](http://www.baeldung.com/java-remove-duplicates-from-list)
- [Flattening Nested Collections in Java](http://www.baeldung.com/java-flatten-nested-collections)
- [HashSet and TreeSet Comparison](http://www.baeldung.com/java-hashset-vs-treeset)
- [Collect a Java Stream to an Immutable Collection](http://www.baeldung.com/java-stream-immutable-collection)
- [Introduction to the Java ArrayDeque](http://www.baeldung.com/java-array-deque)
- [A Guide to HashSet in Java](http://www.baeldung.com/java-hashset)
- [A Guide to TreeSet in Java](http://www.baeldung.com/java-tree-set)
- [How to TDD a List Implementation in Java](http://www.baeldung.com/java-test-driven-list)
- [Getting the Size of an Iterable in Java](http://www.baeldung.com/java-iterable-size)
- [Iterating Backward Through a List](http://www.baeldung.com/java-list-iterate-backwards)
- [How to Filter a Collection in Java](http://www.baeldung.com/java-collection-filtering)
- [Add Multiple Items to an Java ArrayList](http://www.baeldung.com/java-add-items-array-list)
- [Remove the First Element from a List](http://www.baeldung.com/java-remove-first-element-from-list)
- [Initializing HashSet at the Time of Construction](http://www.baeldung.com/java-initialize-hashset)
- [Removing the First Element of an Array](https://www.baeldung.com/java-array-remove-first-element)
- [Fail-Safe Iterator vs Fail-Fast Iterator](http://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
- [Shuffling Collections In Java](http://www.baeldung.com/java-shuffle-collection)
- [How to Find an Element in a List with Java](http://www.baeldung.com/find-list-element-java)
- [An Introduction to Java.util.Hashtable Class](http://www.baeldung.com/java-hash-table)
- [Copy a List to Another List in Java](http://www.baeldung.com/java-copy-list-to-another)
- [Finding Max/Min of a List or Collection](http://www.baeldung.com/java-collection-min-max)
- [Java Null-Safe Streams from Collections](https://www.baeldung.com/java-null-safe-streams-from-collections)
- [Remove All Occurrences of a Specific Value from a List](https://www.baeldung.com/java-remove-value-from-list)
- [Thread Safe LIFO Data Structure Implementations](https://www.baeldung.com/java-lifo-thread-safe)
- [Collections.emptyList() vs. New List Instance](https://www.baeldung.com/java-collections-emptylist-new-list)
- [Differences Between Collection.clear() and Collection.removeAll()](https://www.baeldung.com/java-collection-clear-vs-removeall)
- [Performance of contains() in a HashSet vs ArrayList](https://www.baeldung.com/java-hashset-arraylist-contains-performance)
- [Time Complexity of Java Collections](https://www.baeldung.com/java-collections-complexity)
- [Operating on and Removing an Item from Stream](https://www.baeldung.com/java-use-remove-item-stream)
- [An Introduction to Synchronized Java Collections](https://www.baeldung.com/java-synchronized-collections)
- [Guide to EnumSet](https://www.baeldung.com/java-enumset)
- [Removing Elements from Java Collections](https://www.baeldung.com/java-collection-remove-elements)
- [Converting a Collection to ArrayList in Java](https://www.baeldung.com/java-convert-collection-arraylist)
- [Java 8 Streams: Find Items From One List Based On Values From Another List](https://www.baeldung.com/java-streams-find-list-items)
- [Combining Different Types of Collections in Java](https://www.baeldung.com/java-combine-collections)
- [Sorting in Java](http://www.baeldung.com/java-sorting)
- [A Guide to the Java LinkedList](http://www.baeldung.com/java-linkedlist)
- [Java List UnsupportedOperationException](http://www.baeldung.com/java-list-unsupported-operation-exception)
- [Join and Split Arrays and Collections in Java](http://www.baeldung.com/java-join-and-split)
- [Check If Two Lists are Equal in Java](http://www.baeldung.com/java-test-a-list-for-ordinality-and-equality)
- [Java List Initialization in One Line](https://www.baeldung.com/java-init-list-one-line)
- [ClassCastException: Arrays$ArrayList cannot be cast to ArrayList](https://www.baeldung.com/java-classcastexception-arrays-arraylist)
- [A Guide to EnumMap](https://www.baeldung.com/java-enum-map)