IntStream count() in Java with examples

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

// 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 :

Example 2 : Count the elements in a given range.

Java

// 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 :

Example 3 : Count distinct elements in IntStream.

Java

// 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 :

IntStream count() in Java with examples

S

Sahil_Bansall

Improve

Article Tags :

Practice Tags :

Similar Reads

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, I

IntStream peek() in Java with examples

IntStream peek() is a method in java.util.stream.IntStream. The function returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream. Syntax : IntStream peek(IntConsumer action) Where, IntS

IntStream average() in Java with Examples

java.util.stream.IntStream in Java 8, deals with primitive ints. It helps to solve the old problems like finding maximum value in array, finding minimum value in array, sum of all elements in array, and average of all values in array in a new way. IntStream average() returns an OptionalDouble descri

LongStream count() in Java with examples

LongStream count() returns the count of elements in the stream. LongStream count() is present in java.util.stream.LongStream Syntax : long count() Example 1 : Count the elements in LongStream. Java // Java code for LongStream count() // to count the number of elements in // given stream import java.

Stream count() method in Java with examples

long count() returns the count of elements in the stream. This is a special case of a reduction (A reduction operation takes a sequence of input elements and combines them into a single summary result by repeated application of a combining operation). This is a terminal operation i.e, it may travers

IntConsumer Interface in Java with Examples

The IntConsumer Interface is a part of the java.util.function package which has been introduced since Java 8, to implement functional programming in Java. It represents a function which takes in one int-valued argument but does not return any value. The lambda expression assigned to an object of Int

Java streams counting() method with examples

In Java 8, there is predefined counting() method returned by Collectors class counting() method to count the number of elements in a Stream. Syntax : public static Collector counting() Where, output is a Collector, acting on a Stream of elements of type T, with its finisher returning the â€˜collectedâ€™

Built-in Exceptions in Java with examples

Types of Exceptions in Java Built-in exceptions are the exceptions that are available in Java libraries. These exceptions are suitable to explain certain error situations. Below is the list of important built-in exceptions in Java. Examples of Built-in Exception:1. Arithmetic exception : It is throw

IntSummaryStatistics accept() method in Java with Examples

The accept() method of IntSummaryStatistics class in Java is used to accept the given value into this summary information. Syntax: public void accept(int value) Parameter: This method accepts value as parameter that is to be recorded into this IntSummaryStatistics. Return Value: This method do not r

Java lang.Long.builtcount() method in Java with Examples

java.lang.Long.bitCount() is a built in function in Java that returns the number of set bits in a binary representation of a number. It accepts a single mandatory parameter number whose number of set bits is returned. Syntax: public static long bitCount(long num) Parameters: num - the number passed