String time = "20190712101011";
String reg = "(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})";
time = time.replaceAll(reg, "$1-$2-$3 $4:$5:$6");
Date date=null;
SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date=formatter.parse(time);
System.out.println(formatter.format(date));
java String类型的数字日期转为时间格式的
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转载自blog.csdn.net/qq_43268461/article/details/96426435
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