How to convert string to LocalDateTime,how to solve string format "yyyymmddhhMMss" to Loca-CodePudding

How to convert string to LocalDateTime,how to solve string format "yyyymmddhhMMss" to LocalDateTime

String dateTime = "20221120000000";

LocalDateTime localDateTime = LocalDateTime.parse(dateTime);

Exception in thread "main" java.time.format.DateTimeParseException: Text '20221120000000' could not be parsed at index 0
    at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1948)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1850)
    at java.time.LocalDateTime.parse(LocalDateTime.java:492)
    at java.time.LocalDateTime.parse(LocalDateTime.java:477)
    at com.company.Main.main(Main.java:21)

CodePudding user response：

This should do it:

String dateTimeString = "20221120000000";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
LocalDateTime dateTime = LocalDateTime.parse(dateTimeString, formatter);

If you dont want to use the DateTimeFormatter, your String needs to be in ISO format

CodePudding user response：

String dateTime = "20221120000000";
LocalDateTime localDateTime = LocalDateTime.parse(dateTime,DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));

I want it to convert to this format("yyyy-MM-dd HH:mm:ss") but I get the following error ;

Exception in thread "main" java.time.format.DateTimeParseException: Text '20221120000000' could not be parsed at index 0
    at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1948)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1850)
    at java.time.LocalDateTime.parse(LocalDateTime.java:492)
    at com.company.Main.main(Main.java:21)