DateTimeFormatter格式化日期
public static void main(String[] args) {
// 格式化年月日
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd/MM/yyyy");
LocalDate localDate = LocalDate.now();
String formatLocalDate = dateTimeFormatter.format(localDate);
System.out.println("格式化localDate:"+ formatLocalDate);
String timeText = "15/12/2019";
// dd/MM/yyyy的文本解析成LocalDate
LocalDate parseDate = LocalDate.parse(timeText, dateTimeFormatter);
System.out.println("parseDate:"+ parseDate);
// 格式化时分秒
DateTimeFormatter format1 = DateTimeFormatter.ofPattern("HH:mm:ss");
LocalTime localTime = LocalTime.now();
String formatLocalTime = format1.format(localTime);
System.out.println("格式化localTime："+ formatLocalTime);
String timeText2 = "11:20:25";
// HH:mm:ss的文本解析成LocalTime
LocalTime parseTime = LocalTime.parse(timeText2, format1);
System.out.println("parseTime:"+ parseTime);
// 格式化年月日时分秒
DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
LocalDateTime nowDateTime = LocalDateTime.now();
String formatDateTime = format.format(nowDateTime);
System.out.println("格式化dateTime:"+ formatDateTime);
String timeText3 = "2019-12-15 11:20:25";
LocalDateTime parseDateTime = LocalDateTime.parse(timeText3, format);
System.out.println("parseDateTime:" + parseDateTime);
}