LongStream distinct() in Java with examples

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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:

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 stream
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);
  
        // 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);
    }
}