Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Collectors counting() method in Java 8
The counting() method of the Java 8 Collectors class returns a Collector accepting elements of type T that counts the number of input elements.
The syntax is as follows −
static <T> Collector<T,?,Long> counting()
Here, the parameter −
T − type of input elements
Long − This class value of the primitive type long in an object
To work with Collectors class in Java, import the following package −
import java.util.stream.Collectors;
The following is an example to implement counting() method in Java 8 −
Example
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Demo {
public static void main(String[] args) {
Stream<String> stream = Stream.of("25", "50", "75", "100", "125", "150", "200");
long res = stream.collect(Collectors.counting());
System.out.println("Count of elements in the stream = "+res);
}
}Output
Count of elements in the stream = 7
Updated on: 30-Jul-2019
1K+ Views
Advertisements