I encountered an issue where DateTimeFormatter.ISO_DATE_TIME where date cannot be parsed if year is more then 9999. I was looking for a bug report or to understand what I am doing wrong. Also - JodaTime parse works for the same string. Java version - 8. This test fails:

    public void testParseFarInTheFuture()
    {
        String str = "10000-04-11T01:24:55.887-03:56";

        DateTimeFormatter.ISO_DATE_TIME.parse(str);
    }

Same test with year 9999 works.

Am I doing something wrong or is there a bug?

CodePudding user response：

Prepend

• Years with more than four digits are expected to have a leading PLUS SIGN character ( ) for positive years.
• Negative years with any count of integers always lead wih a MINUS SIGN (-).

The java.time classes generally follow the rules laid down in the ISO 8601 standard. See Wikipedia page on handling years in ISO 8601.

Code:

OffsetDateTime ldt = OffsetDateTime.parse( " 10000-04-11T01:24:55.887-03:56" ) ;

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