I have a web application using Struts JSP, Servlets. On top of each page, the user name logged in is displayed. I have created a UserDTO class for this with static variables. However, I face a problem here. When more than one user is logged in concurrently and perform operations, the user name is displayed interchangeably and gets messed up. Because whichever user logs in latest overwrites the UserDTO static variables. How to get around this problem? I want to find a way where the user name can be tracked for each user separately and displayed accordingly. Please help me..
Your UserDTO object should not be using static variables. Use regular instance variables instead. One characteristic of a static variable is that it's the same for every instance of the class. Therefore, it's not surprising that the variable takes the value of the last user that signed on.