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.Pattern;

public class Main {
    public static boolean isValidTelNumber(String telNumber) {
        if (!TextUtils.isEmpty(telNumber)) {
            String regex = "(\\+\\d+)?1[34578]\\d{9}$";
            return Pattern.matches(regex, telNumber);
        }

        return false;
    }
}