This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Hi guys, Im creating a website in which only one user say X can login at a time. No 2 persons bearing username X can login at same time.How can I do this.Can I get the list of all users from a ServletContext and find if there is any duplication. bye nitin