Java Collections
Last modified: December 9, 2021
List
List Implementations:
List Operations:
- Converting Iterator to List
- Java – Get Random Item/Element From a List
- Partition a List in Java
- Removing all nulls from a List in Java
- Removing all duplicates from a List in Java
- Removing all Nulls from a List in Java
- Check If Two Lists are Equal in Java
- How to Find an Element in a List with Java (popular)
- Java List UnsupportedOperationException
- Copy a List to Another List in Java
- Remove All Occurrences of a Specific Value from a List
- Add Multiple Items to an Java ArrayList
- Remove the First Element from a List
- Ways to Iterate Over a List in Java
- Intersection of Two Lists in Java
- How to Count Duplicate Elements in Arraylist
- Finding the Differences Between Two Lists in Java
- Reversing a Linked List in Java
- Assert Two Lists for Equality Ignoring Order in Java
Maps
Map Implementations:
- A Guide to Java HashMap
- The Java HashMap Under the Hood
- A Guide to TreeMap in Java
- Java TreeMap vs HashMap
- Guide to WeakHashMap in Java
- A Guide to ConcurrentMap
- Guide to the ConcurrentSkipListMap
- An Introduction to Java.util.Hashtable Class
- A Guide to LinkedHashMap in Java
- A Guide to EnumMap
- Immutable Map Implementations in Java
- Java Map With Case-Insensitive Keys
- Java HashMap Load Factor
- Collections.synchronizedMap vs. ConcurrentHashMap
Map Operations:
Convert Collections
- Converting between an Array and a List in Java
- Converting Between an Array and a Set in Java
- Converting between a List and a Set in Java
- Convert a Map to an Array, List or Set in Java
- How to Convert List to Map in Java (popular)
- Map to String Conversion in Java
- Arrays.asList vs new ArrayList(Arrays.asList())
Operations on Collection
- The Difference Between Collection.stream().forEach() and Collection.forEach()
- Sorting in Java
- Shuffling Collections In Java
- Flattening Nested Collections in Java
- Zipping Collections in Java
- Join and Split Arrays and Collections in Java
- Java – Combine Multiple Collections
- Finding Max/Min of a List or Collection
- Collect a Java Stream to an Immutable Collection
- Java 9 Convenience Factory Methods for Collections
- Java Collections Interview Questions
- A Guide to Iterator in Java
- Getting the Size of an Iterable in Java
- Removing Elements from Java Collections
