Collage project- This is an chat application for Android called VartaLap. in this application i use java, xml, and firebase auth and firebase realtime database.
you can use this project for your college project. all you need to is download the zip file and and than open in aAndroid Studio. than you have to integrate your firebase in this application firebase auth, realtime, Storage. and you have to update the google json file that contains your firebase id and many things.
For any guidence you can contact me at sahilchauhank6428@gmail.com
i'd like to help you for free.