question: public static void main ( String [ ] args ) { int result ; PrintWriter out = new PrintWriter ( new OutputStreamWriter ( System . out , UTF_8 ) ) ; PrintWriter err = new PrintWriter ( new OutputStreamWriter ( System . err , UTF_8 ) ) ; try { Main formatter = new Main ( out , err , System . in ) ; result = formatter . format ( args ) ; } catch ( UsageException e ) { err . print ( e . getMessage ( ) ) ; result = 0 ; } finally { err . flush ( ) ; out . flush ( ) ; } System . exit ( result ) ; }
target:  The main method for the formatter, with some number of file names to format. We process them in parallel, but we must be careful; if multiple file names refer to the same file (which is hard to determine), we must serialize their updates.