Friday 8 July 2016

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Jav 8 FlatMap Explained Stream API

In this short example , i will explain where we can use flatMap function of java stream api .

Suppose you have a multi level list where many objects are stored , and you want to convert it to a single list of objects . We can use flatmap which will flatten the list easily .

FlatMap basically first applies the transformation , and then then flatten the result in a single collection .

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

 * Created by abhishek.somani on 8/7/16.
public class JavarootsFlatMapExample {

    public static void main(String[] args) {
        String[] arr = {"abhishekl","somani"};
        String[] arr2 = {"java","example","1.8","stream"};
        List<List<String>> list = new ArrayList<>();
        final List<String> strings = ->;

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