Quiz Discussion

What will be the output of the following Java code?

    class operators 
    {
        public static void main(String args[])
        {
            int var1 = 5; 
            int var2 = 6;
            int var3;
            var3 = ++ var2 * var1 / var2 + var2;
            System.out.print(var3);
        } 
    }

 

Course Name: Java

  • 1]

    10

  • 2]

    11

  • 3]

    12

  • 4]

    56

Solution
No Solution Present Yet

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# Quiz
1
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
2
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
3
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
4
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
5
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
6
Discuss

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

  • 1]

    true

  • 2]

    false

Solution
7
Discuss

What will be the output of the following Java program?

    class leftshift_operator 
    {
        public static void main(String args[]) 
        {        
             byte x = 64;
             int i;
             byte y; 
             i = x << 2;
             y = (byte) (x << 2)
             System.out.print(i + " " + y);
        } 
    }

 

  • 1]

    0 64

  • 2]

    64 0

  • 3]

    0 256

  • 4]

    256 0

Solution
8
Discuss

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);
 
        } 
    }

 

  • 1]

    1 1

  • 2]

    0 1

  • 3]

    1.5 1

  • 4]

    1.5 1.0

Solution
9
Discuss

Which of these statements are incorrect?

  • 1]

    Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms

  • 2]

    Assignment operators run faster than their equivalent long forms

  • 3]

    Assignment operators can be used only with numeric and character data type

  • 4]

    None of the mentioned

Solution
10
Discuss

Which right shift operator preserves the sign of the value?

  • 1]

    <<

  • 2]

    >>

  • 3]

    <<=

  • 4]

    >>=

Solution
# Quiz