Tasks Planner (Java Fund. Mid Exam-30 June 2019 Group 2)

package PastMidExams.MidExam30June2019Group2;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

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

        int[] tasks = Arrays.stream(scanner.nextLine().split(" ")).mapToInt(e -> Integer.parseInt(e)).toArray();

        String input = scanner.nextLine();
        String[] command = new String[input.length()];

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

        while (!input.equals("End")) {
            command = input.split(" ");

            int index = 0;
            int completedCounter = 0;
            int droppedCounter = 0;
            int incompleteCounter = 0;

            switch (command[0]) {

                case "Complete":
                    index = Integer.parseInt(command[1]);

                    if (index >= 0 && index < tasks.length) {
                        if (tasks[index] >= 0 && tasks[index] <= 5) {
                            tasks[index] = 0;
                        }
                    }
                    break;

                case "Change":
                    index = Integer.parseInt(command[1]);
                    int time = Integer.parseInt(command[2]);

                    if (index >= 0 && index < tasks.length) {
                        if (time >= 1 && time <= 5) {
                                tasks[index] = time;
                        }
                    }
                    break;

                case "Drop":
                    index = Integer.parseInt(command[1]);

                    if (index >= 0 && index < tasks.length) {
                        if (tasks[index] >= 0 && tasks[index] <= 5)
                        tasks[index] = -1;
                    }
                    break;

                case "Count":
                    if (command[1].equals("Completed")) {
                        for (int element : tasks) {
                            if (element == 0) {
                                completedCounter++;
                            }
                        }
                        System.out.println(completedCounter);

                    } else if (command[1].equals("Incomplete")) {

                        for (int element : tasks) {
                            if (element > 0 && element <= 5)
                                incompleteCounter++;
                        }
                        System.out.println(incompleteCounter);

                    } else {
                        for (int element : tasks) {
                            if (element < 0) {
                                droppedCounter++;
                            }
                        }
                        System.out.println(droppedCounter);
                    }
                    break;
            }
            input = scanner.nextLine();
        }
        for (int element : tasks) {
            if (element > 0 && element <= 5) {
               incompleteTasks.add(String.valueOf(element));
            }
        }
        System.out.println(String.join(" ", incompleteTasks));
    }
}