I'm trying to parse Year String values in the range from 0 to 1000 with java.time.Year.parse(), however parsing fails with java.time.format.DateTimeParseException: Text '999' could not be parsed at index 0.
The javadoc of Year.parse states:
Obtains an instance of Year from a text string such as 2007.
The string must represent a valid year. Years outside the range 0000 to 9999
must be prefixed by the plus or minus symbol.
Example test to reproduce this issue:
@Test
public void parse_year() {
for (int i = 2000; i >= 0; i--) {
System.out.println("Parsing year: " + i);
Year.parse(String.valueOf(i));
}
}
The test throws the exception when year 999 is reached:
Parsing year: 1003
Parsing year: 1002
Parsing year: 1001
Parsing year: 1000
Parsing year: 999
java.time.format.DateTimeParseException: Text '999' could not be parsed at index 0
at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851)
at java.time.Year.parse(Year.java:292)
at java.time.Year.parse(Year.java:277)
[...]
What am I doing wrong?
needs to be padded to 4 digits
Year.parse(String.format("%04d", i));
Parsing year: 2000
Parsing year: ....
Parsing year: 4
Parsing year: 3
Parsing year: 2
Parsing year: 1
Parsing year: 0
If you wanted to parse before year 0, you could use
Year.parse("-0001");