java 收集正则表达式

// 验证姓名
public static boolean checkUname(String userName) {
Pattern pt1 = null;
/** 操作的字符串 */
Matcher mc1 = null;
if (!userName.equals(null)) {
pt1 = Pattern.compile("^[\u4e00-\u9fa5]{1,15}[·．]{0,1}[\u4e00-\u9fa5]{1,15}$");
mc1 = pt1.matcher(userName);
return mc1.matches();
}
return false;
}

public static void main(String[] args) {
System.out.println(checkUname("徐了"));
}