Sort user defined objects in TreeSet (using Comparable)
Elements in TreeSet are ordered using natural order or Comparator/Comparable interface. In case of user defined objects or POJO, POJO needs […]
Collection
Sort user defined objects using TreeSet in java (Comparator interface)
What is TreeSet? TreeSet is a NavigableSet implementation based on a TreeMap. Elements in TreeSet are ordered using natural order
What is TreeSet collection in java (class hierarchy & example)
1. What is TreeSet colletion in java ? Elements in TreeSet are ordered using natural order or Comparator provided. e.g.
Convert LinkedHashSet collection of String objects to Array in java (example)
Hashtable and linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order of elements
Convert LinkedHashSet of String objects to ArrayList collection (java/ example)
LinkedHashSet is Hashtable & linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order
Iterate or loop LinkedHashSet collection of String objects (java8/example)
Iterate or loop through the LinkedHashSet collection of string objects using iterator & foreach java 8 lambda streams (example)
Convert LinkedHashSet of String objects to TreeSet collection (java/ example)
LinkedHashSet is Hashtable & linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order
What is LinkedHashSet collection in java (class hierarchy & example)
Hashtable and linked list implementation of the Set interface, with predictable iteration order. LinkedHashSet maintains the Insertion order of elements
Convert HashSet of string to Array in java (example)
HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique elements. HashSet does not contains
Convert HashSet of String objects to ArrayList in java (example)
Given a HashSet containing String objects in java. HashSet will be containing Sport’s name. Convert HashSet <String> to ArrayList<String> in
Iterate/loop elements/string objects of HashSet collection in java8 (example)
HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique elements. HashSet does not contains
Convert HashSet to TreeSet in java (example)
What is HashSet in java? HashSet class implements the Set interface, backed by a hash table. HashSet contains the unique
What is HashSet collection in java (class hierarchy & example)
1. What is HashSet collection in java? HashSet class implements the Set interface, backed by a hash table. HashSet contains
Iterate or loop EnumMap using entrySet & forEach Java 8 (example)
Given an EnumMap containing key value pairs in java. EnumMap is specialized Map implementation, to use enum as key(s). Enum
Iterate/ loop TreeMap collection of String Objects before & after java8 (example)
1. What is TreeMap collection in java? Given a TreeMap collection containing key value pairs. TreeeMap is Red-Black tree based
Create least recently used (LRU) cache in java using LinkedHashMap
LRU is one of the most popular caching algorithm. The items, which are least recently used are removed from the
Access order in LinkedHashMap using java (with example)
LinkedHashMap have following attributes: LinkedHashMap is Hashtable and LinkedList based implementation of Map interface. By default LinkedHashMap maintains the insertion order (i.e.
Insertion order in LinkedHashMap using java (with example)
LinkedHashMap has following attributes. LinkedHashMap maintains the insertion order. The default mode is insertion order. The order in which elements are
Put,Remove,Sort,iterate,Get methods of HashMap (example)
Given a HashMap, we will take an example to demonstrate Put,Remove,Sort, Iterate,Get,Contains, Clear etc. methods of HashMap.
putIfAbsent method of HashMap in java (with example)
HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations (get and put). HashMap based
Sort HashMap by keys in java (ascending & descending order)
What is HashMap in java? HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations
Remove elements/string objects from HashMap collection by key (Java/example)
HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the basic operations like get & put. HashMap
Iterate /loop HashMap collection having string objects (Java8/ example)
1. What is HashMap collection in java? HashMap is Hash table based implementation of the Map interface. HashMap provides constant-time performance for the
Insert elements to HashMap collection in java (example)
Given HashMap collection in java, Add/insert/put element/String objects to HashMap using put,putAll & putIfAbsent method (java/ example/class hierarchy)
Add, remove, retain, sort methods of linkedlist collection (java / example)
Given an LinkedList, we will demonstrate remove Add, Retain, Sort Iterate, Get, Contains & Clear methods of linkedlist using example.
Sort elements of linkedlist in java (ascending & descending order)
The LinkedList class extends AbstractSequentialList and implements the List interface. Given an LinkedList, we would like to sort elements of
Iterate or loop LinkedList collection of String objects in java (with example)
Linked list in java is a doubly-linked list. Insertion order is maintained in a linked list. LinkedList extends AbstractSequentialList class &
Retain & remove elements/ nodes of linkedlist collection (Java/ example)
Given a LinkedList collection in java, we would like retain certain elements or nodes of linkedlist. We would like to
Remove or delete nodes/String objects from LinkedList collection (java/ example)
Linked list in java is a doubly-linked list. Insertion order is maintained in a linked list. LinkedList extends AbstractSequentialList class &
Add or insert elements/nodes to linkedlist in java (example)
What is LinkedList Collection in Java? Linked list collection is a doubly-linked list. LinkedList extends AbstractSequentialList class & implements List, Deque,