Quiz Discussion

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);
        } 
    }

 

Course Name: Java

  • 1]

    3 1 6

  • 2]

    2 2 3

  • 3]

    2 3 4

  • 4]

    3 3 6

Solution
No Solution Present Yet

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# Quiz
1
Discuss

 What is the value stored in x in the following lines of Java code?

   int x, y, z;
    x = 0;
    y = 1;
    x = y = z = 8;
  • 1]

    0

  • 2]

    1

  • 3]

    9

  • 4]

    8

Solution
2
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
3
Discuss

Which of these statements is correct?

  • 1]

    true and false are numeric values 1 and 0

  • 2]

    true and false are numeric values 0 and 1

  • 3]

    true is any non zero value and false is 0

  • 4]

    true and false are non numeric values

Solution
4
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
5
Discuss

What is the output of relational operators?

  • 1]

    Integer

  • 2]

    Boolean

  • 3]

    Characters

  • 4]

    Double

Solution
6
Discuss

What will be the output of the following Java code?

    class ternary_operator 
    {
        public static void main(String args[]) 
        {        
             int x = 3;
             int y = ~ x;
             int z;
             z = x > y ? x : y;
             System.out.print(z);
        } 
    }

 

  • 1]

    0

  • 2]

    1

  • 3]

    3

  • 4]

    -4

Solution
7
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
8
Discuss

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);
        } 
    }

 

  • 1]

    5.640000000000001 5

  • 2]

    5.640000000000001 5.0

  • 3]

    5 5

  • 4]

    5 5.640000000000001

Solution
9
Discuss

Which of these have highest precedence?

  • 1]

    ()

  • 2]

    ++

  • 3]

    *

  • 4]

    >>

Solution
10
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
# Quiz