1. String to DateTime, DateTime to Timestamp, DateTime to Date
DateTimeFormatter yyyyMMdd = DateTimeFormat.forPattern("yyyyMMdd");
DateTime dateTime = DateTime.parse("20191122", yyyyMMdd);
long millis = dateTime.getMillis();
Date date = dateTime.toDate();
2. Date转DateTime,DateTime转String
DateTime dateTime = new DateTime(new Date());
String dateFormat = dateTime.toString("yyyy/MM/dd");
3. Timestamp to DateTime, DateTime to String
long millis = System.currentTimeMillis(); DateTime dateTime = new DateTime(millis); String dateFormat = dateTime.toString("yyyy/MM/dd");