Java classes to include in your own programs.  They let you read or write
a file in one fell swoop into RAM, in one great hunk, with readEntireFile
and writeEntireFile.  It also includes createTempFile method that is more
convenient to use than Sun's File.createTempFile.  It also includes
PrintWriterPlus that converts linefeeds to platform specific line feeds
even when they are embedded in data.
See also the more elaborate filetransfer package
http://mindprod.com/products1.html#FILETRANSFER if your files
are too large to fit entirely in RAM.
Why the three linked ball logo?  It symbolises processing a
file which may have internal structure as a single piece.