Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day.
IIS is able to impersonate the IUSR_<computername> account because the user name and password for this account are known by IIS. Before returning a page to the client, IIS checks NTFS file and directory permissions to see if the IUSR_<computername> account is allowed access to the file.
What is UZURV? UZURV is a Reservation Services app (iOS and Android) created to enhance the on-demand riding and driving experience. The app works in conjunction with existing on-demand transportation services like Uber and Lyft, allowing riders to make advanced reservations with the on-demand driver of their choice.