question: public static File stream2file ( InputStream in ) throws IOException { final File tempFile = File . createTempFile ( PREFIX , SUFFIX ) ; try ( FileOutputStream out = new FileOutputStream ( tempFile ) ) { IOUtils . copy ( in , out ) ; } String newFont = getFontForOS ( ) ; if ( newFont . compareToIgnoreCase ( DEFAULT_FONT ) != 0 ) { BufferedReader br = new BufferedReader ( new FileReader ( tempFile ) ) ; try { StringBuilder sb = new StringBuilder ( ) ; String line = br . readLine ( ) ; while ( line != null ) { sb . append ( line . replace ( DEFAULT_FONT , newFont ) ) ; sb . append ( "\n" ) ; line = br . readLine ( ) ; } try { FileWriter fileWriter = new FileWriter ( tempFile ) ; fileWriter . write ( sb . toString ( ) ) ; fileWriter . flush ( ) ; fileWriter . close ( ) ; } catch ( IOException e ) { e . printStackTrace ( ) ; } } finally { br . close ( ) ; } } return tempFile ; }
target:  Writes an InputStream to a temporary file.