正则记录

1.只保留数字

String privacy  = "dssf232df412?..w234343";
String regEx="[^0-9]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(privacy);
privacy = m.replaceAll("").trim();
System.out.println(privacy );

2.简单验证手机号

boolean matches = Pattern.matches("^1[0-9]\\d{9}", mobile);