The Java version of Nachos is available for you to download here: nachos-fa01.tar.gz (112 Kb gzipped tarfile). You can unpack this file using the command
zcat nachos-fa01.tar.gz | tar xf -which will create the directory nachos. See the file README contained within the tarfile for information on using and compiling the code.
Each project group should download this code just once and place it under CVS control for the group to use. We will be setting up UNIX groups and CVS repositories for each group soon; in the meantime, you should be reading through the code and trying to understand how it works.