Object Oriented Programming - I (3140705) MCQs

MCQs of Introduction to java and elementary programming

Showing 1 to 10 out of 95 Questions
1 2 3 4 5 6
1.
Which of the following can be operands of arithmetic operators?
(a) Numeric
(b) Boolean
(c) Characters
(d) Both Numeric & Characters
Answer:

Option (d)

2.
Modulus operator, %, can be applied to which of these?
(a) Integers
(b) Floating – point numbers
(c) Both Integers and floating – point numbers
(d) None of the mentioned
Answer:

Option (c)

3.
With x = 0, which of the following are legal lines of Java code for changing the value of x to 1? 
1. x++;
2. x = x + 1;
3. x += 1;
4. x =+ 1;
(a) 1, 2 & 3
(b) 1 & 4
(c) 1, 2, 3 & 4
(d) 3 & 2
Answer:

Option (c)

4.
Decrement operator, --, decreases the value of a variable by what number?
(a) 1
(b) 2
(c) 3
(d) 4
Answer:

Option (a)

5.
Which of these statements are incorrect?
(a) Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms
(b) Assignment operators run faster than their equivalent long forms
(c) Assignment operators can be used only with numeric and character data type
(d) None of the mentioned
Answer:

Option (d)

6.
What will be the output of the following Java program? 
class increment 
    {
        public static void main(String args[])
        {
            double var1 = 1 + 5; 
            double var2 = var1 / 4;
            int var3 = 1 + 5;
            int var4 = var3 / 4;
            System.out.print(var2 + " " + var4);
 
        } 
    }
(a) 1 1
(b) 0 1
(c) 1.5 1
(d) 1.5 1.0
Answer:

Option (c)

7.
What will be the output of the following Java program? 
class Modulus 
    {
        public static void main(String args[]) 
        {    
             double a = 25.64;
             int  b = 25;
             a = a % 10;
             b = b % 10;
             System.out.println(a + " "  + b);
        } 
    }
(a) 5.640000000000001 5
(b) 5.640000000000001 5.0
(c) 5 5
(d) 5 5.640000000000001
Answer:

Option (a)

8.
What will be the output of the following Java program? 
    class increment 
    {
        public static void main(String args[]) 
        {        
             int g = 3;
             System.out.print(++g * 8);
        } 
    }
(a) 25
(b) 24
(c) 32
(d) 33
Answer:

Option (c)

9.
Can 8 byte long data type be automatically type cast to 4 byte float data type?
(a) True
(b) False
Answer:

Option (a)

10.
What will be the output of the following Java program? 
    class Output 
    {
        public static void main(String args[]) 
        {    
             int a = 1;
             int b = 2;
             int c;
             int d;
             c = ++b;
             d = a++;
             c++;
             b++;
             ++a;
             System.out.println(a + " " + b + " " + c);
        } 
    }
(a) 3 2 4
(b) 3 2 3
(c) 2 3 4
(d) 3 4 4
Answer:

Option (d)

Showing 1 to 10 out of 95 Questions
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