Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.text.TextUtils;

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

public class Main {
    public static boolean isUserNameCorrect(String userName) {
        if (!TextUtils.isEmpty(userName)) {
            Pattern pattern = Pattern.compile("^[0-9a-zA-Z_]{6,20}$");
            Matcher matcher = pattern.matcher(userName);
            return matcher.find();
        }
        return false;
    }
}