Tech Studio Online

package com.dpq.interview.Q; import java.math.BigInteger; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Date; import java.util.List; public class SortingDemo { public static void main(String[] args) throws ParseException { allSortingTechniquesAfterJava8(); } public static void allSortingTechniquesAfterJava8() throws ParseException { List<Employee> list = populateList(); System.out.println(“####################################### Natiral soring by Employee Id ###############################################”); list.stream().sorted().forEach(e -> System.out.println(e)); System.out.println(“####################################### Natiral soring by Employee Id but in desending order ###############################################”); list.stream().sorted(Collections.reverseOrder()).forEach(e -> System.out.println(e)); List<Employee> sortedList = list

package com . dpq . movie . ratings . datalayer . dao . impl ; import java . util . Arrays ; import java . util . List ; import java . util . stream . Collectors ; public class RatingDaoImpl { publicstaticvoid main ( String [] args ) { List < String > names = Arrays . asList ( “Deepak” , “Deepak” , “Kuhu” , “Kuhu” , “Garv” ) ; System . out . println ( names . stream () . collect ( Collectors . toMap ( k -> k , v -> 1 , Integer :: sum ))) ; List < Student > student = Arrays . asList ( new RatingDaoImpl () . new Student ( “Math” , 98 ) ,   new RatingDaoImpl () . new Student ( “Science” , 98 ) , new RatingDaoImpl () . new Student ( “English” , 98 ) , new RatingDaoImpl () . new Student ( “Hindi” , 98 )) ; System . out . println ( student . stream () . map ( e -> e . getMarks ()) . collect ( Collectors . summingInt ( e -> e . intValue ()))) ; List < StudentDetails > studentDetails = Arrays . asList ( new RatingDaoImpl () . new Stud