// 时间戳 --> 字符串
String times ="18461145832";
SimpleDateFormat sdf =newSimpleDateFormat("yyyy/MM/dd HH:mm");
String time = sdf.format(Long.parseLong(times));
System.out.println(time);
1970/08/0300:05
字符串类型转换成Date类型
// str --> data
String str ="12/29/2000 0:36";
SimpleDateFormat sdf =newSimpleDateFormat("MM/dd/yyyy H:mm");
Date date = sdf.parse(str);
System.out.println(date);
FriDec2900:36:00CST2000
Date类型转换成字符串
// data -->str
Date date =newDate();
SimpleDateFormat sdf =newSimpleDateFormat("yyyy/MM/dd HH:mm");
String time = sdf.format(date);
System.out.println(time);
2021/03/1518:05
Date类型转转换成时间戳
// date --> 时间戳
Date date =newDate();long l = date.getTime();
System.out.println(l);