public static void main(String[] args)
                 throws Exception

Test application for JexlScriptEngine (JSR-223 implementation). If a single argument is present, it is treated as a filename of a JEXL script to be evaluated. Any exceptions terminate the application. Otherwise, lines are read from standard input and evaluated. ScriptExceptions are logged, and do not cause the application to exit. This is done so that interactive testing is easier.