Скачать или смотреть Set Interface | HashSet Class and Linked Hashset Class | Collection Framework Part 2

In this video, I have discussed about Hashset Class LinkedHashset class in collection interface
#collectionframework #java #parnikatutorials

The Set interface of the Java Collections framework provides the features of the mathematical set in Java. It extends the Collection interface.

Unlike the List interface, sets cannot contain duplicate elements.

In order to use functionalities of the Set interface, we can use these classes:

HashSet
LinkedHashSet

Methods of Set

The Set interface includes all the methods of the Collection interface. It's because Collection is a super interface of Set.

Some of the commonly used methods of the Collection interface that's also available in the Set interface are:

add() - adds the specified element to the set
addAll() - adds all the elements of the specified collection to the set
iterator() - returns an iterator that can be used to access elements of the set sequentially
remove() - removes the specified element from the set
removeAll() - removes all the elements from the set that is present in another specified set
retainAll() - retains all the elements in the set that are also present in another specified set
clear() - removes all the elements from the set
size() - returns the length (number of elements) of the set
toArray() - returns an array containing all the elements of the set
contains() - returns true if the set contains the specified element
containsAll() - returns true if the set contains all the elements of the specified collection
hashCode() - returns a hash code value (address of the element in the set)


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