如何将字符串解析为可空的int

import java.util.Optional;

public class StringToOptionalInt {
    public static void main(String[] args) {
        String str = "123";
        Optional<Integer> optionalInt = stringToOptionalInt(str);
        optionalInt.ifPresent(System.out::println);
    }

    public static Optional<Integer> stringToOptionalInt(String str) {
        try {
            int intValue = Integer.parseInt(str);
            return Optional.of(intValue);
        } catch (NumberFormatException e) {
            return Optional.empty();
        }
    }
}