Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static boolean isUserName(String userName) {
        String strPattern = "^([u4e00-u9fa5]|[ufe30-uffa0]|[a-zA-Z0-9_]){3,12}$";

        Pattern p = Pattern.compile(strPattern);
        Matcher m = p.matcher(userName);
        return m.matches();
    }
}