Question 1 Are there any compile errors in (a) and (b)? Briefly explain your answer ArrayList dates - new ArrayList (); dates.add (new Date()); dates.add (new String()); ArrayList dates - new ArrayList (); dates.add(new Date()); dates.add(new String()); (b) Question 2 Suppose that set1 (Set ) is a set that contains the strings "red", "yellow", "green", and that set2 (Set ) is another set that contains the strings "red", "yellow", "blue". Answer the following questions: (All the questions are independent) 1. What is set1 after executing set1.addAll(set2)? 2. What is set1 after executing set1.add(set2)? 3. What is set1 after executing set1.removeAll(set2)? 4. What is set1 after executing set1.remove(set2)? 5. What is set1 after executing set1.retainAll(set2)?