DateTimeFormatter is a new feature of java8 and is thread-safe.
The support for time zones is also relatively good. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (Recommended learning: java course )
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("EE yyyy-MM-dd hh:mm:ss");
String format = dateTimeFormatter.format(datetime);
System.out.println(format);
// Locale.US 的作用是格式化時(shí),會(huì)按照當(dāng)?shù)氐牧?xí)慣來(lái)格式化，如中國(guó)是 星期日，美國(guó)是Sun
DateTimeFormatter us = DateTimeFormatter.ofPattern("EE yyyy-MM-dd hh:mm:ss",Locale.US);
String us_format = us.format(datetime);
System.out.println(us_format);DateTimeFormatter comes with many commonly used formats, such as:
//datetime，date，time LocalDateTime now = LocalDateTime.now(); System.out.println(DateTimeFormatter.ISO_DATE_TIME.format(now)); System.out.println(DateTimeFormatter.ISO_DATE.format(now)); System.out.println(DateTimeFormatter.ISO_TIME.format(now)); //local datetime，date，time System.out.println(DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(now)); System.out.println(DateTimeFormatter.ISO_LOCAL_DATE.format(now)); System.out.println(DateTimeFormatter.ISO_LOCAL_TIME.format(now)); //毫秒 Instant now_instance = Instant.now(); System.out.println(DateTimeFormatter.ISO_INSTANT.format(now_instance));
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