IntStream distinct() in Java with examples

IntStream distinct() is a method in java.util.stream.IntStream. 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 :

IntStream distinct()

Where, IntStream is a sequence of 
primitive int-valued elements.

Below given are some examples to understand the function in a better way.
Example 1 : Printing distinct elements of Integer stream.

// Java code for IntStream distinct()
import java.util.*;
import java.util.stream.IntStream;

class GFG {

    // Driver code
    public static void main(String[] args) {

    // creating a stream
    IntStream stream = IntStream.of(2, 3, 3, 5, 6, 6, 8);

    // 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 IntStream distinct() method
// to count the number of distinct
// elements in given stream
import java.util.*;
import java.util.stream.IntStream;

class GFG {

    // Driver code
    public static void main(String[] args) {

    // creating a stream
    IntStream stream = IntStream.of(2, 3, 3, 5, 6, 6, 8);

    // 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