Notifications fixed

import java.util.Arrays;
import java.util.Scanner;

public class RenameThis {
    public static void main(String[] args) {

        readAndProcessMessage();
    }
    private static void showSuccessMessage(String operation, String message, StringBuilder stringBuilder) {
        operation = String.format("Successfully executed %s.", operation);
        char[] row = new char[operation.length()];
        Arrays.fill(row, '=');
        message = String.format("%s.", message);
        String result = String.format("%s%n%s%n%s%n%n", operation, String.valueOf(row), message);
        stringBuilder.append(result);
    }
    private static void showWarningMessage(String message, StringBuilder stringBuilder) {
        message = String.format("Warning: %s.", message);
        char[] row = new char[message.length()];
        Arrays.fill(row, '=');
        String result = String.format("%s%n%s%n%n", message, String.valueOf(row));
        stringBuilder.append(result);
    }
    private static void showErrorMessage(String operation, String message, int errorCode, StringBuilder stringBuilder) {
        operation = String.format("Error: Failed to execute %s.", operation);
        char[] row = new char[operation.length()];
        Arrays.fill(row, '=');
        message = String.format("Reason: %s.", message);
        String code = String.format("Error code: %d.", errorCode);
        String result = String.format("%s%n%s%n%s%n%s%n%n", operation, String.valueOf(row), message, code);
        stringBuilder.append(result);
    }
    private static void readAndProcessMessage() {
        Scanner scanner = new Scanner(System.in);
        StringBuilder stringBuilder = new StringBuilder();

        int messagesNumber = Integer.parseInt(scanner.nextLine());

        for (int i = 0; i < messagesNumber; i++) {
            String messageType = scanner.nextLine();
            switch (messageType) {
                case "success":
                    String operation = scanner.nextLine();
                    String message = scanner.nextLine();
                    showSuccessMessage(operation, message, stringBuilder);
                    break;
                case "warning":
                    message = scanner.nextLine();
                    showWarningMessage(message, stringBuilder);
                    break;
                case "error":
                    operation = scanner.nextLine();
                    message = scanner.nextLine();
                    int errorCode = Integer.parseInt(scanner.nextLine());
                    showErrorMessage(operation, message, errorCode, stringBuilder);
                    break;
                default:
                    break;
            }
        }
        System.out.print(stringBuilder);
    }
}