Quiz Discussion

Can 8 byte long data type be automatically type cast to 4 byte float data type?

Course Name: Java

  • 1]

    true

  • 2]

    false

Solution
No Solution Present Yet

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# Quiz
1
Discuss

Which of the following can be operands of arithmetic operators?

  • 1]

    Numeric

  • 2]

    Boolean

  • 3]

    Characters

  • 4]

    Both Numeric & Characters

Solution
2
Discuss

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);     	
        } 
    }

 

  • 1]

    42 42

  • 2]

    43 43

  • 3]

    42 -43

  • 4]

    42 43

Solution
3
Discuss

 On applying Left shift operator, <<, on integer bits are lost one they are shifted past which position bit?

  • 1]

    1

  • 2]

    32

  • 3]

    33

  • 4]

    31

Solution
4
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
5
Discuss

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

  • 1]

    1

  • 2]

    2

  • 3]

    3

  • 4]

    4

Solution
6
Discuss

What is the order of precedence (highest to lowest) of following operators?

    1. &    
    2. ^
    3. ?:
  • 1]

    1 -> 2 -> 3

  • 2]

    2 -> 1 -> 3

  • 3]

    3 -> 2 -> 1

  • 4]

    2 -> 3 -> 1

Solution
7
Discuss

What will be the output of the following Java code?

    class bool_operator 
    {
        public static void main(String args[]) 
        {    
             boolean a = true;
             boolean b = !true;
             boolean c = a | b;
 	     boolean d = a & b;
             boolean e = d ? b : c;
             System.out.println(d + " " + e);
        } 
    }

 

  • 1]

    false false

  • 2]

    true ture

  • 3]

    true false

  • 4]

    false true

Solution
8
Discuss

Which of the following operators can operate on a boolean variable?

   1. &&
   2. ==
   3. ?:
   4. +=
  • 1]

    3 & 2

  • 2]

     1 & 4

  • 3]

     1, 2 & 4

  • 4]

    1, 2 & 3

Solution
9
Discuss

Which right shift operator preserves the sign of the value?

  • 1]

    <<

  • 2]

    >>

  • 3]

    <<=

  • 4]

    >>=

Solution
10
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
# Quiz