Hey guys i need some help ... why java classes have icon J instead of C .. also i wrote an error line here where is the red line that tells me there is an error ,,, i re installed android studio also the same problem with an empty new project 
i don't know what to do?? Also auto complete doesn't work :/

http://s8.postimg.org/a97spq4kk/2015_01_03_031026.jpg