API interface errors : i have been following a online tutorial and i have been following carefully the code below is a API interface yet i keep getting errors like illegal start of type and such

    package com.gwiddle.airsoftcreations.airsoftapp;

    import retrofit2.Call;
    import retrofit2.http.GET;
    import retrofit2.http.Query;

    public interface ApiInterface {

    @GET("register.php")
    Call<User> performRegistration(@Query("name") String Name, 
    @Query("user_name") String UserName, @Query("user_password") String 
    UserPassword );

    @GET("login.php")
    Call<User>perfromUserLogin@Query("user_name") String Username, 
    @Query("user_password") String UserPassword)



}


please help