It claims zero or maybe more incidence of whitespace characters, accompanied by a comma after which you can accompanied by zero or more prevalence of whitespace characters. Having said that x.replaceAll("\s+", ""); are going to be far more productive way of trimming Areas (if string can have several contiguous Areas) https://emilioiynbp.blogsumer.com/30813607/not-known-details-about-mantra-mushroom-chocolate-bars