Introduction
Here is the source code for Main.java
Source
//package com.java2s;
public class Main {
public static Boolean checkemil(String emil) {
String str = "[a-zA-Z0-9_]{1,20}@{1}[a-zA-Z0-9]{2,10}(\\.{1}[a-zA-Z]{2,5}){1,5}";
if (!emil.matches(str)) {
return false;
}
return true;
}
}