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Java 8 HashMap Streaming Example

import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

public class JavaStreamExample {

    public static void main(String[] args) {

        Map<Integer, String> countryMap = new HashMap<>();
        countryMap.put(1, "USA");
        countryMap.put(2, "UK");
        countryMap.put(3, "AUSTRALIA");
        countryMap.put(4, "BRAZIL");

         for (Map.Entry<Integer, String> entry : countryMap.entrySet()) {
            if ("BRAZIL".equals(entry.getValue())) {
                System.out.println( " Before Java 8 : " +entry.getValue());
            }
        }
         String streamResult = countryMap.entrySet().stream()
                .filter(map -> "BRAZIL".equals(map.getValue()))
                .map(map -> map.getValue())
                .collect(Collectors.joining());

        System.out.println("Sreaming example : " + streamResult );

    }
}

2 comments:

Petter Marry said...

Hi, Great.. Tutorial is just awesome..It is really helpful for a newbie like me.. I am a regular follower of your blog. Really very informative post you shared here. Kindly keep blogging. If anyone wants to become a Java developer learn from Java Training in Chennai. or learn thru Java Online Training from India . Nowadays Java has tons of job opportunities on various vertical industry.

Kanye Co Jamila said...

Great Article
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