Java Collections.sort - help me remove the unchecked warning

Question

List<Question> questions = new ArrayList<Question>();
questions.addAll(getAllQuestions()); //returns a set of Questions
Collections.sort(questions, new BeanComparator("questionId")); //org.apache.commons.beanutils.BeanComparator

Under Java 1.5, the above works fine except that the 'new BeanComparator("questionId")' generates an unchecked warning. I do not like warnings. Is there a way I can provide the BeanComparator a type, or do I have to use @SuppressWarnings("unchecked")?

Answer 1

Options are:

• Change BeanComparator to implement Comparator<Question>. This is not a real option here, given it is a well-known external library class. People ain't going to let you do it.
• Fork and modify BeanComparator as above, giving it a different FQN.
• Wrap the existing BeanComparator with a class that implements Comparator<Question>.
• Change the type of questions to List<?>.
• Add a suppress warnings annotation.