Salesforce: Creating user for testing / test methods

                Sometimes we have to crate user objects in tests & test methods. To crate a user we have to select a profile and set the required fields in the user objects as the apex code below.

    Profile pfl = [select id from profile where name='Standard User'];

    User testUser = new User(alias = 'u1', email='u1@testorg.com',
            emailencodingkey='UTF-8', lastname='Testing', languagelocalekey='en_US',
            localesidkey='en_US', profileid = pfl.Id,  country='United States', CommunityNickname = 'u1',
            timezonesidkey='America/Los_Angeles', username='u1@testorg.com');

URL validation using regular expression for javascript, Salesforce Apex, Java , PHP & Ruby

Pattern for javascript, Java , PHP & Ruby

/^((http|https):\/\/)?(www[.])?([a-zA-Z0-9]|-)+([.][a-zA-Z0-9(-|\/|=|?)?]+)+$/


Validation function in Javascript

function checkForValidURL(value) {

    var urlregex = new RegExp("^((http|https):\/\/)?(www[.])?([a-zA-Z0-9]|-)+([.][a-zA-Z0-9(-|\/|=|?)?]+)+$");
    if (urlregex.test(value)) {
        return (true);
    }
    return (false);
}

Pattern for Salesforce Apex

  ^((http|https)://)??(www[.])??([a-zA-Z0-9]|-)+?([.][a-zA-Z0-9(-|/|=|?)??]+?)+?$
It can also be used for validation fields and Visualforce pages

Validation function in Apex

public Boolean checkForValidURL(String url){ 
 if(url != Null)   {
    String regexFormat ='(^((http|https)://)??(www[.])??([a-zA-Z0-9]|-)+?([.][a-zA-Z0-9(-|/|=|?)??]+?)+?$)'; 
   Pattern urlFormat = Pattern.Compile(regexFormat); 
   Matcher format_of_url = urlFormat.Match(url);
   if (format_of_url.Matches()){
       return true;       //return true - if success 
   }
 return false ;
}