36. Which of these keywords is used to prevent content of a variable from being modified?

1. 1. last

   
   
   

   2. constant

   
   
   

   3. static

   
   
   

   4. final

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   A variable can be declared final, doing so prevents its content from being modified. Final variables must be initialized when it is declared.

---

37. Arrays in Java are implemented as?
    

1. 1. object

   
   
   

   2. class

   
   
   

   3. variable

   
   
   

   4. method

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   object

---

---

38. What is the output of this program?
    

    
    public class Result
        {
            public static void main(String args[]) 
            {    
                 boolean p = false;
                 boolean q = true;
                 boolean r = q ^ p;
                 System.out.println(!r);
            } 
        }
    

1. 1. false

   
   
   

   2. 0

   
   
   

   3. 1

   
   
   

   4. true

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   output: false

---

39. What is the output of this program?
    

    
    public class Result
        {
            public static void main(String args[]) 
            {    
                 int p , q = 2;
                 p = 20;
                 if (p != 20 && p / 0 == 0)
                 {
                     System.out.println(q);
                 }
                 else
                 {
                     System.out.println(++q);
                 }
            } 
        }
    

1. 1. 1

   
   
   

   2. 2

   
   
   

   3. 3

   
   
   

   4. 4

   
   
   

   5. 5

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Operator short circuit and, &&, skips evaluating right hand operand if left hand operand is false thus division by zero in if condition does not give an error.
   output: 3

---

---