java 字符串、日期、时间戳之间互相转换

1、字符串转日期SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String str = "2019-09-16 09:40:19";//字符串转日期Date date = sdf.parse(str);System.out.println("print: "+ date);

3、日期转时间戳long time = date.getTime();System.out.println("time"+time);