Error(1,1)illegalcharacter '\ufeff' when compiling on android studio

Question

I got an Eclipse project source code(I was told that on Android Studio, maybe they just confused), and I start to migrating the code to android studio refers to

Answer 1

i solved this problem with this method :

1. ctrl + A in my activity and copy all codes
2. delete YourClass.java
3. create YourClass.java
4. paste all code in new java class

This method work for me. tnx