Manipulator List

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

public class Pr5ListManipulationAdvanced {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        List<Integer> numbers =
                Arrays.stream(scanner.nextLine().split(" "))
                        .map(Integer::parseInt)
                        .collect(Collectors.toList());
        String line;
        while (!("end").equals(line = scanner.nextLine())) {
            String[] commandArray = line.split("\\s+");
            String command = commandArray[0];
            if ("Get".equals(command)) {
                command = commandArray[0] + commandArray[1];
            }
            switch (command) {
                case "Contains":
                    int containNumber = Integer.parseInt(commandArray[1]);
                    boolean containsElement = containsElement(numbers, containNumber);
                    if (containsElement) System.out.println("Yes");
                    else System.out.println("No such number");
                    break;
                case "Print":
                    String printOddEven = commandArray[1];
                    printEvenOdd(numbers, printOddEven);
                    break;
                case "Getsum":
                    getSum(numbers);
                    break;
                case "Filter":
                    String condition = commandArray[1];
                    int filterNumber = Integer.parseInt(commandArray[2]);
                    filter(numbers, condition, filterNumber);
                    break;
            }
        }
    }

    private static boolean containsElement(List<Integer> numbers, int containNumber) {
        boolean isContains = false;
        for (Integer number : numbers) {
            if (number.equals(containNumber)) {
                isContains = true;
            }
        }
        return isContains;
    }

    private static void printEvenOdd(List<Integer> numbers, String printOddEven) {
        int caseOddEven = (printOddEven.equals("odd")) ? 1 : 0;
        for (Integer number : numbers) {
            if (number % 2 == caseOddEven) {
                System.out.print(number + " ");
            }
        }
        System.out.println();
    }

    private static void getSum(List<Integer> numbers) {
        int sum = 0;
        for (Integer number : numbers) {
            sum += number;
        }
        System.out.println(sum);
    }

    private static void filter(List<Integer> numbers, String condition, int filterNumber) {
        switch (condition) {
            case "<":
                for (Integer number : numbers) {
                    if (number < filterNumber) System.out.print(number + " ");
                }
                System.out.println();
                break;
            case ">":
                for (Integer number : numbers) {
                    if (number > filterNumber) System.out.print(number + " ");
                }
                System.out.println();
                break;
            case "<=":
                for (Integer number : numbers) {
                    if (number <= filterNumber) System.out.print(number + " ");
                }
                System.out.println();
                break;
            case ">=":
                for (Integer number : numbers) {
                    if (number >= filterNumber) System.out.print(number + " ");
                }
                System.out.println();
                break;
        }
    }
}