Java Programming - MCQ Practice Questions

What is the difference between List<Object> and List<?> in practical usage?

What is the compiled bytecode signature of this generic method? public <T extends Comparable<T>> T findMin(T[] arr)

Which statement about generic array creation is correct?

What output will this produce? java List<? super Integer> list = new ArrayList<Number>(); list.add(5); Integer val = (Integer) list.get(0);

Which Java feature was introduced specifically to support generics compilation?

A method processes collections where items need to be added back to the same collection type. Which wildcard approach ensures type safety for write operations?