JAVA Program to calculate age by entering Date Of Birth (DOB)

// checking current date and time and formatting it
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class currentDate {

    public static void main(String args[]) {

        LocalDateTime dateTime = LocalDateTime.now();

        System.out.print("Before Formatting: " +dateTime);

        //DateTimeFormatter
        //Formatter for printing and parsing date-time objects.
        //This class provides the main application entry point for printing and parsing and provides
        // common implementations of DateTimeFormatter:
        DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");

        String formattedDate = dateTime.format(dateTimeFormatter);

        System.out.println("\nAfter formatting:" +formattedDate);
    }
}