Quiz Discussion

What will be the output of the following Java program?

    class bitwise_operator 
    {
        public static void main(String args[])
        {
            int var1 = 42;
            int var2 = ~var1;
            System.out.print(var1 + " " + var2);     	
        } 
    }

 

Course Name: Java

  • 1]

    42 42

  • 2]

    43 43

  • 3]

    42 -43

  • 4]

    42 43

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Decrement operator, −−, decreases the value of variable by what number?

  • 1]

    1

  • 2]

    2

  • 3]

    3

  • 4]

    4

Solution
2
Discuss

What will be the output of the following Java program?

    class bitwise_operator 
    {
        public static void main(String args[]) 
        {    
             int a = 3;
             int b = 6;
 	         int c = a | b;
             int d = a & b;             
             System.out.println(c + " "  + d);
        } 
    }

 

  • 1]

    7 2

  • 2]

    7 7

  • 3]

    7 5

  • 4]

    5 2

Solution
3
Discuss

Which of these statements are incorrect?

  • 1]

    Equal to operator has least precedence

  • 2]

    Brackets () have highest precedence

  • 3]

    Division operator, /, has higher precedence than multiplication operato

  • 4]

    Addition operator, +, and subtraction operator have equal precedence

Solution
4
Discuss

What will be the output of the following Java code?

class Output 
{
        public static void main(String args[]) 
        {    
             int x=y=z=20;
 
        } 
}

 

  • 1]

    compile and runs fine

  • 2]

    20

  • 3]

    run time error

  • 4]

    compile time error

Solution
5
Discuss

What should be expression1 evaluate to in using ternary operator as in this line?

 expression1 ?  expression2  :  expression3
  • 1]

    Integer

  • 2]

    Floating – point numbers

  • 3]

    Boolean

  • 4]

    None of the mentioned

Solution
6
Discuss

Which of these statements are incorrect?

  • 1]

    The left shift operator, <<, shifts all of the bits in a value to the left specified number of times

  • 2]

    The right shift operator, >>, shifts all of the bits in a value to the right specified number of time

  • 3]

    The left shift operator can be used as an alternative to multiplying by 2

  • 4]

    The right shift operator automatically fills the higher order bits with 0

Solution
7
Discuss

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 = 3;
             a |= 4;
             b >>= 1;
             c <<= 1;
             a ^= c;
             System.out.println(a + " " + b + " " + c);
        } 
    }

 

  • 1]

    3 1 6

  • 2]

    2 2 3

  • 3]

    2 3 4

  • 4]

    3 3 6

Solution
8
Discuss

What will be the output of the following Java code?

    class operators 
    {
        public static void main(String args[]) 
        {    
             int x = 8;
             System.out.println(++x * 3 + " " + x);
        } 
    }

 

  • 1]

    24 8

  • 2]

    24 9

  • 3]

    27 8

  • 4]

    27 9

Solution
9
Discuss

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);
        } 
    }

 

  • 1]

    3 2 4

  • 2]

    3 2 3

  • 3]

    2 3 4

  • 4]

    3 4 4

Solution
10
Discuss

What will be the output of the following Java code?

    class Relational_operator 
    {
        public static void main(String args[])
        {
            int var1 = 5; 
            int var2 = 6;
            System.out.print(var1 > var2);
        } 
    }

 

  • 1]

    1

  • 2]

    0

  • 3]

    true

  • 4]

    false

Solution
# Quiz