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Category Archives: Java
Hashtable is a class in Java collections which implements Map interface and extends the Dictionary Class Contains only unique elements and its synchronized…
Java does not allow the name of enum to start with number like 100A, 25K. In that case, we can append the code…
Java EnumSet class is the specialized Set implementation for use with enum types. It inherits AbstractSet class and implements the Set interface. Section…
Java EnumMap class is the specialized Map implementation for enum keys. It inherits Enum and AbstractMap classes. the Parameters for java.util.EnumMap class. K:…
Java enums (declared using the enum keyword) are shorthand syntax for sizable quantities of constants of a single class. Section 35.1: Declaring and…
A Deque is linear collection that supports element insertion and removal at both ends. The name deque is short for "double ended queue"…
Section 33.1: The usage of the PriorityQueue //The type of the PriorityQueue is Integer.PriorityQueue<Integer>   queue   =   new   PriorityQueue<Integer>(); //The elements are added to the…
TreeMap and TreeSet are basic Java collections added in Java 1.2. TreeMap is a mutable, ordered, Map implementation. Similarly, TreeSet is a mutable,…
Introduction to sorted Map. Section 31.1: Introduction to sorted Map Keypoint: SortedMap interface extends Map. entries are maintained in an ascending key order.…
Concepts of weak Hashmap Section 30.1: Concepts of WeakHashmap Key Points: Implementation of Map. stores only weak references to its keys. Weak References…
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