Tag: hashset example

In this post we will see different ways we can iterate through a map , HashMap and TreeMAp in Java.

In previous post we have learn java about hashmap methods in java and java hashmap example . Now In this article

To check Set/HashSet is empty or not we use isEmpty() method . HashSet isEmpty() method returns true if this set

In order to count number of element in Set/HashSet , use size() method. Set.size() method returns the number of elements

In this post we will see how to check any element is or not in set. We can check given

We can remove set from Hashset with the help removeAll() method. Hashset removeAll() method in java removes from this set

We can remove all element from HashSet using clear() method . Clear () method of set removes all of the

In this tutorial we will see how to remove element from set java . We can remove element from Hashset

In this tutorial we will see how to copy element of one set to hashset. addAll() method can copy any