1. What is autoboxing in Java?
2. Which primitive type corresponds to the `Integer` wrapper class in Java?
3. What is the primary benefit of autoboxing in Java?
4. In Java, which classes are used for autoboxing and unboxing operations?
5. What happens if you try to unbox a `null` reference in Java?
6. Which operator is used for autoboxing and unboxing in Java?
7. Which of the following statements is true about autoboxing in Java?
8. In Java, which method can be used to perform unboxing?
9. What is the result of the following code in Java?
Integer x = 5;
Integer y = 5;
System.out.println(x == y);
Integer x = 5;
Integer y = 5;
System.out.println(x == y);