question: public static void statistics ( ) { StringBuffer line = new StringBuffer ( errors + " error" ) ; if ( errors != 1 ) line . append ( "s" ) ; line . append ( ", " + warnings + " warning" ) ; if ( warnings != 1 ) line . append ( "s" ) ; line . append ( "." ) ; err ( line . toString ( ) ) ; }
target:  print error and warning statistics