Suppose set1 is a set that contains the strings red, yellow, and green and that set2 is another set that contains the strings red, yellow, and blue. Answer the following questions:
- What are in set1 and set2 after executing set1.addAll(set2)?
- What are in set1 and set2 after executing set2.clear()?
- What are in set1 and set2 after executing set1.removeAll(set2)?
- What are in set1 and set2 after executing set2.clear()?
