  [Context:] This article is the second in a two part series introducing r-Java
2.0, a nucleosynthesis code for open use that performs r-process calculations
and provides a suite of other analysis tools. [Aims:] The first paper discussed
the nuclear physics inherent to r-Java 2.0 and in this article the astrophysics
incorporated into the software will be detailed. [Methods:] R-Java 2.0 allows
the user to specify the density and temperature evolution for an r-process
simulation. Defining how the physical parameters (temperature and density)
evolve can effectively simulate the astrophysical conditions for the r-process.
Within r-Java 2.0 the user has the option to select astrophysical environments
which have unique sets of input parameters available for the user to adjust. In
this work we study three proposed r-process sites; neutrino-driven winds around
a proto-neutron star, ejecta from a neutron star merger and ejecta from a quark
nova. The underlying physics that define the temperature and density evolution
for each site is described in this work. [Results:] In this paper a survey of
the available parameters for each astrophysical site is undertaken and the
effect on final r-process abundance is compared. The resulting abundances for
each site are also compared to solar observations both independently and in
concert. R-Java 2.0 is available for download from the website of the
Quark-Nova Project: http://quarknova.ucalgary.ca/
