Is Joda-Time DateTimeFormatter class thread safe?

Question

Is the Joda-Time DateTimeFormatter class thread safe? Once I get an instance from DateTimeFormat.forPattern, can its various parse methods be called by multiple threads? DateTimeFormatter's Javadocs makes no mention of thread safety.

Answer 1

Yes, it is:

DateTimeFormat is thread-safe and immutable, and the formatters it returns are as well.

and so is the Java 8 version

Implementation Requirements: This class is immutable and thread-safe.

Answer 2

A quick look at the code shows there isn't any mutable shared state in DateTimeFormatter, which would make it thread safe.

Answer 3

Found this question on top of google's answers when checking for Java's java.time.format.DateTimeFormatter thread safety

Java's own DateTimeFormatter is also thread-safe, as the documentation states:

This class is immutable and thread-safe