Interviewed for a co-op position at RIM in Java Software development. The interview process was on the phone, interviewed by two senior developers. They first asked about my projects at school and relevant work experience. Then they asked a series of technical questions. 1) Difference between .equals and == 2) Difference between abstract class and interface 3) Can you think of why we would use a private constructor ? 4) Switch the contents of two variables, x and y, without requiring a third variable 5) What kind of data structures have you used at work or school? 6) How would you use a linked list to implement a stack?