Actually I deleted a Dynamic web Project from my file system directly and when eclipse was not running.
And when I started my eclipse the project was deleted from Project Explorer but when I tried to create a new Dynamic project with same name as the one which I deleted from filesystem then I am getting this error.
Is there any solution to this problem ?
Hmm, when I do this there is still a project folder for that project in Eclipse, but the folder is "greyed out". Usually what I do is delete the folder within the Project Explorer and then I can create the project again.