I have installed oracle 11g express in my computer.When I want to start using it,it gives me a command line windows which I can not be able to use it.Is there any means to use GUI?
Have you reviewed any of the Oracle XE documentation?
Database Express Edition Documentation
In the Getting Started Guide it talks about multiple ways of connecting to the database that have a GUI, have a look at the following sections:
Oracle&reg; Database Express Edition