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IntStream count() in Java with examples

  • Last Updated : 06 Dec, 2018

IntStream count() returns the count of elements in the stream. IntStream count() is present in java.util.stream.IntStream
Syntax :

long count()

Example 1 : Count the elements in IntStream.




// Java code for IntStream count()
// to count the number of 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, 4, 5, 6, 7, 8);
  
        // storing the count of elements
        // in a variable named total
        long total = stream.count();
  
        // displaying the total number of elements
        System.out.println(total);
    }
}

Output :

7

Example 2 : Count the elements in a given range.




// Java code for IntStream count()
// to count the number of elements in
// given range excluding the last element
import java.util.*;
import java.util.stream.IntStream;
  
class GFG {
  
    // Driver code
    public static void main(String[] args)
    {
  
        // creating a stream
        IntStream stream = IntStream.range(2, 50);
  
        // storing the count of elements
        // in a variable named total
        long total = stream.count();
  
        // displaying the total number of elements
        System.out.println(total);
    }
}

Output :

48

Example 3 : Count distinct elements in IntStream.




// Java code for IntStream count()
// 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, 4, 4, 7, 7, 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

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