import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;

public class Main {
	public static void main(String[] args) {
		String strDateTime = "2012-07-04_13-42-03";
		DateTimeFormatter dtf = DateTimeFormatter.ofPattern("u-M-d_H-m-s", Locale.ENGLISH);
		LocalDateTime ldt = LocalDateTime.parse(strDateTime, dtf);
		System.out.println(ldt);
	}
}