Convert a Set to Stream in Java

Set interface extends Collection interface and Collection has stream() method that returns a sequential stream of the collection. Below given are some examples to understand the implementation in a better way. Example 1 : Converting Integer HashSet to Stream of Integers. 

Output:

2 4 6 8 10 12 

Example 2 : Converting HashSet of String to stream. 

Output:

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Note : Objects that you insert in HashSet are not guaranteed to be inserted in same order. Objects are inserted based on their hash code. Convert Stream to Set in Java