import java.time.Instant;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;

public class Main {
	public static void main(String args[]) {
		DateTimeFormatter dtf = DateTimeFormatter.ofPattern("uuuu-MM-dd'T'HH:mm:ss.SSSZ", Locale.ENGLISH);
		OffsetDateTime odt = OffsetDateTime.parse("2018-08-10T18:25:00.000+0000", dtf);
		Instant instant = odt.toInstant();
		System.out.println(instant);
	}
}