IntStream count() in Java with examples

IntStream distinct() in Java with examples

Last Updated : 06 Dec, 2018

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 :

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 :

IntStream count() in Java with examples

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