ArrayList<Integer> balance = new ArrayList<>();
    ArrayList<String> purchase = new ArrayList<>();

    System.out.println("Введите ваш бюджет на месяц: ");
    int budget = in.nextInt();

    System.out.println("У вас есть " + budget + " до конца месяца.");

    for (int i = 0; i <= budget; i--) { // circle that responds for re-entering purchase
        System.out.println("Name of Purchase And its Price: ");

        String purchName = (String) System.in.read();
        int purchPrice = in.nextInt(); // ошибка возникает тут

        System.out.println("Thanks!");

        balance.add(purchPrice);
        purchase.add(purchName);

        int value = budget - purchPrice;

        System.out.println("If you want continue write 1");
        System.out.println("See you purchase 2");
    }
}

Введите ваш бюджет на месяц:
20
У вас есть 20 до конца месяца.
Name of Purchase And its Price:
qwer
Exception in thread "main" java.util.InputMismatchException
    at java.base/java.util.Scanner.throwFor(Scanner.java:939)
    at java.base/java.util.Scanner.next(Scanner.java:1594)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
    at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
    at com.begin.exampleTwo.main(exampleTwo.java:23)

Process finished with exit code 1