LongStream distinct() is a method in java.util.stream.LongStream. This method returns a stream consisting of the distinct elements. This is a stateful intermediate operation i.e, it may incorporate state from previously seen elements when processing new elements.
Syntax :
LongStream distinct() Where, LongStream is a sequence of primitive long-valued elements.
Below given are some examples to understand the function in a better way.
Example 1 : Printing distinct elements of Long stream.
// Java code for LongStream distinct()import java.util.*;import java.util.stream.LongStream;  class GFG {      // Driver code    public static void main(String[] args)    {          // creating a stream        LongStream stream = LongStream.of(2L, 3L,                              3L, 5L, 6L, 6L, 8L);          // Displaying only distinct elements        // using the distinct() method        stream.distinct().forEach(System.out::println);    }} |
Output:
2 3 5 6 8
Example 2 : Counting value of distinct elements in a stream.
// Java code for LongStream distinct() method// to count the number of distinct// elements in given streamimport java.util.*;import java.util.stream.LongStream;  class GFG {      // Driver code    public static void main(String[] args)    {          // creating a stream        LongStream stream = LongStream.of(2L, 3L, 3L,                                      5L, 6L, 6L, 8L);          // storing the count of distinct elements        // in a variable named total        long total = stream.distinct().count();          // displaying the total number of elements        System.out.println(total);    }} |
Output:
5
