正則表达式的替换功能

public static void main(String[] args) {
// String类的的功能：public String replaceAll(String regex,String replacement)
String s = "wo12shi55mli";
String regex = "\\d";//\\d代表任意数字
String st = s.replaceAll(regex, "");//将任意数字替换成空的字符串
System.out.println(st);
}