26. What is the output of this program?
    

    public class increment {
        public static void main(String args[]) {
        int a = 5;
         System.out.print(++a * 6);
      }
    }

1. 1. 36

   
   
   

   2. 25
      

   
   
   

   3. 30

   
   
   

   4. 40

   
   
   

   5. 12

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Operator ++ has more preference than *, thus a becomes 6 and when multiplied by 6 gives 36.
   output: 36

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27. What will be the output of these statement?
    

    
    class output {
            public static void main(String args[]) 
            {
                double p, q, r;
                p = 3.0/0;
                q = 0/4.0;
                r = 0/0.0;
     
    	    System.out.println(p);
                System.out.println(q);
                System.out.println(r);
            } 
        }
    

1. 1. 0.0

   
   
   

   2. Infinity
      

   
   
   

   3. NaN

   
   
   

   4. all of the mentioned

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   For floating point literals, we have constant value to represent (10/0.0) infinity either positive or negative and also have NaN (not a number for undefined like 0/0.0), but for the integral type, we don’t have any constant that’s why we get an arithmetic exception.

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28. Which of these literals can be contained in float data type variable?
    

1. 1. -1.7e+308

   
   
   

   2. -3.4e+038

   
   
   

   3. +1.7e+308

   
   
   

   4. -3.4e+050

   
   
   

   5. NA

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Range of float data type is -(3.4e38) To +(3.4e38)

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29. How is Date stored in database?

1. 1. java.util.Date

   
   
   

   2. java.sql.Date

   
   
   

   3. java.sql.DateTime

   
   
   

   4. java.util.DateTime

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   java.sql.Date is the datatype of Date stored in database.

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30. What is the range of byte data type in Java?

1. 1. -128 to 127

   
   
   

   2. -32768 to 32767

   
   
   

   3. -2147483648 to 2147483647

   
   
   

   4. None of the mentioned

   
   
   

   5. NA

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Byte occupies 8 bits in memory. We use the formula - 2^(bits-1) to calculate the negative range, and we use 2^(bits-1)–1 for the positive range.
   
   So byte range is from - 2^(8-1) to 2^(8-1) -1 which is -128 to 127.

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