List Manipulation Advanced

package ArrayList;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class P05ListManipulationAdvanced {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        List<Integer> numbersList = Arrays.stream(scan.nextLine().split(" "))
                .map(Integer::parseInt)
                .collect(Collectors.toList());

        int number = 0;

        while (true) {

            String[] commandArr = scan.nextLine().split(" ");

            if (commandArr[1].equals("end")) {
                break;
            }

            switch (commandArr[0]) {
//            Contains {number} – check if the list contains the number. If yes, print "Yes", otherwise, print "No such number"
                case "Contains":
                    number = Integer.parseInt(commandArr[1]);
                    if (isNumberIn(numbersList, number)){
                        System.out.println("Yes");
                    } else {
                        System.out.println("No such number");
                    }
                    break;

//            Print even – print all the numbers that are even separated by a space
//            Print odd – print all the numbers that are oddly separated by a space
                case "Print":
                    printEvenOrOdd(numbersList, commandArr[1]);
                    System.out.println();
                    break;

//            Get sum – print the sum of all the numbers
                case "Get":
                    System.out.println(giveListSum(numbersList));
                    break;

//            Filter {condition} {number} – print all the numbers that fulfill that condition. The condition will be either
//            '<' По-малко
//            '>' По-голямо
//            "<=" По-малко или равно
//            ">=" По-голямо или равно
                case "Filter":
                    number = Integer.parseInt(commandArr[2]);
                    numbersMeatingTheConditions(commandArr, numbersList, number);
                    System.out.println();
                    break;
            }
        }
    }

    private static void numbersMeatingTheConditions(String[] commandArr, List<Integer> numbersList, int number) {
        switch (commandArr[1]){
            case "<":
                for (int item : numbersList) {
                    if (item < number) {
                        System.out.print(item + " ");
                    }
                }
                break;
            case ">":
                for (int item : numbersList) {
                    if (item > number) {
                        System.out.print(item + " ");
                    }
                }
                break;
            case "<=":
                for (int item : numbersList) {
                    if (item <= number) {
                        System.out.print(item + " ");
                    }
                }
                break;
            case ">=":
                for (int item : numbersList) {
                    if (item >= number) {
                        System.out.print(item + " ");
                    }
                }
                break;
        }
    }

    private static boolean isNumberIn (List<Integer> numbersList, int number) {
        for (int item : numbersList) {
            if (item == number) {
                return true;
            }
        }
        return false;
    }

    private static void printEvenOrOdd(List<Integer> numbersList, String command) {
        if (command.equals("even")) {
            for (int item : numbersList) {
                if (item % 2 == 0) {
                    System.out.print(item + " ");
                }
            }
        } else {
            for (int item : numbersList) {
                if (item % 2 != 0) {
                    System.out.print(item + " ");
                }
            }
        }
    }

    private static Integer giveListSum(List<Integer> numbersList) {
        int sum = 0;
        for (int item : numbersList) {
            sum += item;
        }
        return sum;
    }

}