Java 8: Stream map with Code Examples

Example: Stream map()

import java.util.ArrayList;
import java.util.List;

public class Java8StreamMapExample {

    public static void main(String... args) {

        List arrayList = new ArrayList<>();

        arrayList.add(1);
        arrayList.add(2);
        arrayList.add(3);
        arrayList.add(4);
        arrayList.add(5);
        arrayList.add(6);
        arrayList.add(7);
        arrayList.add(8);
        arrayList.add(9);
        arrayList.add(10);

        arrayList.stream().map(no -> no * 5).forEach(System.out::println);
    }
}

Output:

5
10
15
20
25
30
35
40
45
50

In the above example we have made use of the stream map method to calculate the calculation table of 5 using an ArrayList.