What are some benefits of allowing two ways of doing the following?

There are two ways to access constants in a Java class.
(. java.util.Calendar APRIL)
java.util.Calendar/APRIL

There are two ways invoke a static method in a Java class.
(. Math pow 2 4)
(Math/pow 2 4)

There are two ways to invoke a constructor to create a Java object.
(def calendar (new GregorianCalendar 2008 3 16))
(def calendar (GregorianCalendar. 2008 3 16))

There are two ways invoke an instance method on a Java object.
(. calendar add Calendar/MONTH 2)
(.add calendar Calendar/MONTH 2)

It seems that in each case the second way is preferred. Why not get
rid of the first way?

-- 
R. Mark Volkmann
Object Computing, Inc.

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