11. What is the result of the following code in Java?
Integer a = 1000;
Integer b = 1000;
System.out.println(a == b);
Integer a = 1000;
Integer b = 1000;
System.out.println(a == b);
12. In Java, which of the following is a valid autoboxing conversion?
13. What is autounboxing in Java?
14. What happens if you try to unbox a `null` reference in Java?
15. In Java, which method can be used to perform autounboxing?
16. What is the result of the following code in Java?
Double x = 3.5;
Double y = 3.5;
System.out.println(x.equals(y));
Double x = 3.5;
Double y = 3.5;
System.out.println(x.equals(y));
17. In Java, what is the result of the expression `Integer.valueOf(10) + Integer.valueOf(20)`?
18. Which wrapper class corresponds to the `char` primitive type in Java?
19. What is the result of the following code in Java?
Integer a = 100;
int b = a;
Integer a = 100;
int b = a;