Closing Filer when compilation finishes

I'm writing an annotation processor that needs to write a text file containing the name of every class it encounters with a certain annotation. To do this, I need to keep a text file open over the entire run of my annotation processing. Every time process() is called, there is the potential to need to make new entries. Thus I cannot call close() on my print stream when the process() call is done. However, I do need to call close() before apt exists or I risk not having all the data I wrote flushed to the file.

What can I do to open my text file only once, but be able to append entries to it over the entire length of the compilation's run?

[662 byte] By [Mark_McKaya] at [2007-10-3 4:04:07]