question: private static long writeFile ( String path , byte [ ] data ) { FileOutputStream out = null ; try { out = new FileOutputStream ( path ) ; out . write ( data ) ; return data . length ; } catch ( Exception e ) { Log . e ( TAG , "Failed to write data" , e ) ; } finally { try { out . close ( ) ; } catch ( Exception e ) { Log . e ( TAG , "Failed to close file after write" , e ) ; } } return - 1 ; }
target:  Writes the data to a file.