UserName showing up as DomainName\UserName instead of Full Name in SharePoint 2010

UserName showing up as DomainName\UserName instead of Full/Display Name in SharePoint 2010

Solution 1 : 

• Set-SPUser -Identity ‘SharkHeads\Mukesh’ -DisplayName ‘Mukesh Parmar’ –Web http://SharePointServer
• Get-SPUser –Web http://SharePointServer | Set-SPUser –SyncFromAD

FOR ALL USERS : Get-SPUser –Web http://SharePointServer | Set-SPUser –SyncFromAD

Solution 2 :

 1. Opened Central Administration on SharePoint 2010, logged in as the Administrator.

2. Clicked into "Application Management," then "Manage Service Applications."

3. Scrolled down to "User Profile Service Application," and clicked to open that.

4. Clicked "Manage User Profiles" under the main People heading.

5. Searched for the account I was looking for - "adelaide" - and made the changes so her correct first name, last name, and full name were showing.

6. Saved - and now I'm hoping for the best. With SharePoint 2007 it took up to 30 minutes to become available; we'll see with SharePoint 2010.