DateTimeFormats is a Java library that lets you parse datetime strings by example —
no need to remember pattern strings like "yyyy-MM-dd'T'HH:mm:ss.SSS zzz".
Parsing example string:
"Tue, 2024-03-19 15:00:00 America/New_York"
→ inferred pattern:
"E, yyyy-MM-dd HH:mm:ss VV"
Supports LocalDate, OffsetDateTime, ZonedDateTime, and Instant.
Ambiguity is deliberately rejected:
"10/30/2025" is accepted,
"01/02/2025" (ambiguous) is not.
Use parseToInstant(timeStr) or parseZonedDateTime(timeStr) for quick one-liner parsing.
For better performance in loops: use formatOf(...) once and reuse the formatter.
All inferred patterns are verified using DateTimeFormatter.parse() —
no false positives. If it parses, it roundtrips.
Parsing example string: "Tue, 2024-03-19 15:00:00 America/New_York"
→ inferred pattern: "E, yyyy-MM-dd HH:mm:ss VV"
Supports LocalDate, OffsetDateTime, ZonedDateTime, and Instant.
Ambiguity is deliberately rejected: "10/30/2025" is accepted, "01/02/2025" (ambiguous) is not.
Use parseToInstant(timeStr) or parseZonedDateTime(timeStr) for quick one-liner parsing.
For better performance in loops: use formatOf(...) once and reuse the formatter.
All inferred patterns are verified using DateTimeFormatter.parse() — no false positives. If it parses, it roundtrips.
Project: https://github.com/google/mug
Javadoc: https://google.github.io/mug/apidocs/com/google/mu/time/Date...
Feedback welcome — edge cases, weird formats, you name it.