16. What is the output of this program?
    

    class N
        {
            int p;
            double q;
        }
        class M extends N 
        {
    	int r;
        }
        public class Result 
        {
            public static void main(String args[]) 
            {
                N p = new N();
                M q = new M();
                Class object;
                object = q.getClass();
                System.out.print(object.getSuperclass());
            }
        }
    

1. 1. N

   
   
   

   2. M

   
   
   

   3. Class N

   
   
   

   4. Class M

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   getSuperClass() returns the super class of an object. q is an object of class M which extends class N , Hence Super class of q is N. therefore class N is printed.

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17. What is the output of this program?
    

    class N
        {
            int p;
            double q;
        }
        class M extends N 
        {
    	int r;
        }
        public class Result 
        {
            public static void main(String args[]) 
            {
                N p = new N();
                M q = new M();
                Class object;
                object = q.getClass();
                System.out.print(object.isLocalClass());
            }
        }
    

1. 1. True

   
   
   

   2. False

   
   
   

   3. 0

   
   
   

   4. 1

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   False

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18. Which of these classes is not included in java.lang?

1. 1. Class

   
   
   

   2. Byte

   
   
   

   3. Integer

   
   
   

   4. Array

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Array class is a member of java.util.

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19. Which of these is a process of converting a simple data type into a class?

1. 1. type array

   
   
   

   2. type casting

   
   
   

   3. type conversion

   
   
   

   4. type wrapping

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   type wrapping

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20. Which of these is a super class of wrappers Double & Integer?

1. 1. Float

   
   
   

   2. Number

   
   
   

   3. Digits

   
   
   

   4. Long

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Number is an abstract class containing subclasses Double, Float, Byte, Short, Integer and Long.

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