dinesh Archive

Map interface in Collection

The Map interface is not an extension of Collection interface. Instead the interface starts of it’s own interface hierarchy, for maintaining key-value associations. The interface describes a mapping from keys to values, without duplicate keys, …

TreeSet Class in Collection

public class TreeSet<E> extends AbstractSet<E> implements NavigableSet<E>, Cloneable, Serializable A NavigableSet implementation based on a TreeMap. The elements are ordered using their natural ordering, or by a Comparator provided at set creation time, depending on …

LinkedHashSet Class in Collection

public class LinkedHashSet<E> extends HashSet<E> implements Set<E>, Cloneable, Serializable Hash table and linked list implementation of the Set interface, with predictable iteration order. This implementation differs from HashSet in that it maintains a doubly-linked list …

HashSet class in collection

A HashSet is a collection set that neither allows duplicate elements nor order or position its elements. This class implements the Set interface and extends AbstractSet. It creates a collection that uses a hash table …