Monday, 28 August 2017

Count method of Java 8 Stream_V2 | Java 8 streams tutorial | Java 8 streams | Streams in Java 8


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https://www.youtube.com/watch?v=T1lNO8cNQ-A&list=UUhwKlOVR041tngjerWxVccw

StreamCountDemo.java
import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;

public class StreamCountDemo
{
    public static void main(String[] args)
    {
        List<Integer> list = Arrays.asList(3, 4, 6);
        /*
         * It returns the number of elements in stream.
         */
        System.out.println("With out filter, Count = " + list.stream().count());

        Predicate<Integer> p = num -> num % 2 == 0;
        
        System.out.println("After filter, Count =  " + list.stream().filter(p).count());
    }
}
Output
With out filter, Count = 3
After filter, Count =  2

Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/StreamDemo_Count_modulus_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StreamDemo_Count_modulus_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/07d37f967453de17efa70af5825dc03ae2d5a7c0/BasicJava/StreamDemo_Count_modulus_App/?at=master
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