static void Main(string[] args)        {            Regex regex=new Regex("\\p{P}");            String str = " ；。、，!\"#$%&'*+,-./:;<=>?@[\\]^_`{|}~";            MatchCollection mc=regex.Matches(str);            if (mc != null && mc.Count != 0)             {                foreach (Match m in mc)                {                    Console.Write(m.Value);                }            }            Console.ReadLine();        }

public static void main(String[] args) {                        Pattern pattern=Pattern.compile("\\pP");            Matcher match=pattern.matcher(" ；。、，!\"#$%&'*+,-./:;<=>?@[\\]^_`{|}~");            while(match.find()){                String p=match.group();                System.out.print(p);            }    }

；。、，!"#%&'*,-./:;?@[\]_{}