import java.util.Collections;

import java.util.List;

import java.util.ArrayList;

import java.util.Comparator;

public class Java8Tester {

public static void main(String args[]){

List<String> names1 = new ArrayList<String>();

names1.add("Mahesh ");

names1.add("Suresh ");

names1.add("Ramesh ");

names1.add("Naresh ");

names1.add("Kalpesh ");

List<String> names2 = new ArrayList<String>();

names2.add("Mahesh ");

names2.add("Suresh ");

names2.add("Ramesh ");

names2.add("Naresh ");

names2.add("Kalpesh ");

Java8Tester tester = new Java8Tester();

System.out.println("Sort using Java 7 syntax: ");

tester.sortUsingJava7(names1);

System.out.println(names1);

System.out.println("Sort using Java 8 syntax: ");

tester.sortUsingJava8(names2);

System.out.println(names2);

}

//sort using java 7

private void sortUsingJava7(List<String> names){

Collections.sort(names, new Comparator<String>() {

@Override

public int compare(String s1, String s2) {

return s1.compareTo(s2);

}

});

}

//sort using java 8

private void sortUsingJava8(List<String> names){

Collections.sort(names, (s1, s2) -> s1.compareTo(s2));

}

}