Java dates old and new

Java developers put up with the arcane Gregorian Calendar, Date, SimpleDateFormat until Java 8 (which itself is a few years old now). There certainly are old code who still use the old way. Your favorite IDE can figure out your imports.

 // Before Java 8 (obsolete)
 Date date = new Date();
 System.out.println("java util date now is: "+date);
 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
   
 // date to string
 System.out.println("formatted: "+sdf.format(date));
   
 // string to date
  try {
  Date date911 = sdf.parse("2001-09-11");
         System.out.println("911 date: "+date911);
  } catch (ParseException e) {
         System.out.println("Can't parse that date");
  }
   
   
 // Java 8
 LocalDateTime now = LocalDateTime.now();
 System.out.println("LocalDateTime now is: "+now);
   
 // date to string
 DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
 System.out.println("formatted: "+now.format(formatter));
   
 // string to date
 LocalDate date911 = LocalDate.of(2001, 9, 11);
 System.out.println("911 date: "+date911);
   

This is just part of the story... Java 8 can also do timezone a lot easier than previously.