package com.zetcode;

import java.util.Arrays;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

// Jane the 'Jane' string

// ^Jane 'Jane' at the start of a string

// Jane$ 'Jane' at the end of a string

// ^Jane$ exact match of the string 'Jane'

// [abc] a, b, or c

// [a-z] any lowercase letter

// [^A-Z] any character that is not a uppercase letter

// (Jane|Becky) Matches either 'Jane' or 'Becky'

// [a-z]+ one or more lowercase letters

// ^[98]?$ digits 9, 8 or empty string

// ([wx])([yz]) wy, wz, xy, or xz

// [0-9] any digit

// [^A-Za-z0-9] any symbol (not a number or a letter)

public class JavaRegexEmail {

public static void main(String[] args) {

List<String> emails = Arrays.asList("[email protected]",

"andy@yahoocom", "34234sdfa#2345", "[email protected]");

Pattern p = Pattern.compile("^[a-zA-Z0-9._-]+@[a-zA-Z0-9-]+\\.[a-zA-Z.]{2,18}$");

for (String email : emails) {

Matcher m = p.matcher(email);

if (m.matches()) {

System.out.printf("%s matches%n", email);

} else {

System.out.printf("%s does not match%n", email);

}

}

}

}