iterator

Java Collection retainAll() method The retainAll() method of Java Collection Interface keeps only those elements in this queue that are present in…

Java Collection toArray() Method The toArray() method of Collection Interface returns an array containing all the elements present in the collection. The…

Java Collection add() method The add() method of Java Collection Interface inserts the specified element in this Collection. It returns a Boolean…

Java ConcurrentLinkedQueue add() method The add() method of ConcurrentLinkedQueue class inserts the specified element at the tail of this ConcurrentLinkedQueue. The addAll()…

Java Collection addAll() method The addAll() method of Java Collection Interface appends or inserts all the elements of the specified collection to…

Java Collection clear() Method The clear() method of Java Collection Interface removes all of the elements from this collection. It returns a…

Java Collection containsAll() Method The containsAll() method of Java Collection Interface returns a Boolean value ‘true’, if this collection contains all the…

Java HashSet clone() Method The clone() method of Java HashSet class is used to return a shallow copy of the specified HashSet.…

Java HashSet isEmpty() Method The isEmpty() method of Java HashSet class is used to check wheather HashSet contains an element or not.…

Java HashSet add() Method The add() is a method of Java HashSet class which adds the specified element to this set if…