In every Javadoc page, at the top, you have the name of the class,
including its full path, which is what you should import.
For example, let's look at the well-known
from the Java standard library. If you look at its Javadoc, you'll see:
By looking at the last line, you know you have to import
java.util.ArrayList (generic type designators are not included
in the import).
So now look at the Javadoc you gave us. It's a bit confusing, because
ironically, the National Institute of Standards and Technology is not using
the proper language conventions (the name of the package should have been
gov.nist.jama or something like that, certainly not something
that begins with a capital letter).
Nevertheless, the Javadoc states:
So your import should be