Java8 Filters and collectors

Lets say we have collection of strings and we would like to filter  (remove) out certain strings from collection. We could achive the same in java 7 and earlier versions

import java.util.ArrayList;import java.util.Arrays;import java.util.List;public class BeforeJava8 {    public static void main(String[] args) {        List lines = Arrays.asList("abc","shiva", "xyz");        List result = getFilterOutput(lines, "shiva");        for (String temp : result) {            System.out.println(temp);    //output : abc, xyz        }    }    private static List getFilterOutput(List lines, String filter) {        List result = new ArrayList<>();        for (String line : lines) {            if (!"shiva".equals(line)) {                 result.add(line);            }        }        return result;    }}

The same can be achieved in java 8.

import java.util.Arrays;import java.util.List;import java.util.stream.Collectors;public class NowJava8 {    public static void main(String[] args) {        List lines = Arrays.asList("abc", "xyz", "shiva");        List result = lines.stream()                                .filter(line -> !"shiva".equals(line))                     .collect(Collectors.toList());                      result.forEach(System.out::println);                //output : abc,xyz    }}

So, what have we done here, we have used java 8 for filtering the collections and using lambda and reduced the number of lines to do the same.