Operators MCQ

Test your knowledge with important Operators MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Operators MCQs at Bissoy

• What is the valid data type for variable "a" to print "Hello World"?<br><pre><code class="java">switch(a){ System.out.println("Hello World");}</code></pre>
  ক

  int and float

  খ

  byte and short

  গ

  char and long

  ঘ

  byte and char
• Decrement operator, - -, decreases the value of variable by what number?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• What would be the output of the following code snippet if variable a=10?<br><pre><code class="java">if(a</code></pre>
  ক

  1 2

  খ

  2 3

  গ

  1 3

  ঘ

  3
• Which of these is returned by "greater than", "less than" and "equal to" operators?
  ক

  Integers

  খ

  Floating - point numbers

  গ

  Boolean

  ঘ

  None of the mentioned
• What should be expression1 evaluate to in using ternary operator as in this line?<br><pre><code class="java">expression1 ? expression2 : expression3</code></pre>
  ক

  Integer

  খ

  Floating - point numbers

  গ

  Boolean

  ঘ

  None of the mentioned
• Which of the following operators can operate on a boolean variable?<br><pre><code class="java">1. &amp;&amp;2. ==3. ?:4. +=</code></pre>
  ক

  3 &amp; 2

  খ

  1 &amp; 4

  গ

  1, 2 &amp; 4

  ঘ

  1, 2 &amp; 3
• What is the value stored in x in the following lines of Java code?<br><pre><code class="java">int x, y, z; x = 0; y = 1; x = y = z = 8;</code></pre>
  ক

  0

  খ

  1

  গ

  9

  ঘ

  8
• Which of these lines of Java code will give better performance?<br><pre><code class="java">1. a | 4 + c &gt;&gt; b &amp; 7; 2. (a | ((( 4 * c ) &gt;&gt; b ) &amp; 7 ))</code></pre>
  ক

  1 will give better performance as it has no parentheses

  খ

  2 will give better performance as it has parentheses

  গ

  Both 1 &amp; 2 will give equal performance

  ঘ

  Dependent on the computer system
• What is the order of precedence (highest to lowest) of following operators?<br><pre><code class="java">1. &amp; 2. ^3. ?:</code></pre>
  ক

  1 &gt; 2 &gt; 3

  খ

  2 &gt; 1 &gt; 3

  গ

  3 &gt; 2 &gt; 1

  ঘ

  2 &gt; 3 &gt; 1
• With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?<br><pre><code class="java">1. x++;2. x = x + 1;3. x += 1;4. x =+ 1;</code></pre>
  ক

  1, 2 &amp; 3

  খ

  1 &amp; 4

  গ

  1, 2, 3 &amp; 4

  ঘ

  3 &amp; 2
• On applying Left shift operator,
  ক

  1

  খ

  32

  গ

  33

  ঘ

  31
• Determine output:<br><pre><code class="java">public class Test{ static int i = 5; public static void main(String... args){ System.out.println(i++); System.out.println(i); System.out.println(++i); System.out.println(++i+i++); }}</code></pre>
  ক

  6 6 6 16

  খ

  6 7 6 16

  গ

  5 6 7 16

  ঘ

  5 6 6 16

  ঙ

  None of these
• Determine output:<br><pre><code class="java">public class Test{ public static void main(String... args){ int a=5 , b=6, c=7; System.out.println("Value is "+ b + c); System.out.println(a + b + c); System.out.println("String " + (b+c)); }}</code></pre>
  ক

  Value is 67 18 String 13

  খ

  Value is 13 18 String 13

  গ

  Value is 13 18 String

  ঘ

  Compilation fails

  ঙ

  None of these
• Which of the following is the correct expression that evaluates to true if the number x is between 1 and 100 or the number is negative?
  ক

  [ <p><span>A. 1 <p><span>B. ((x 1)) || (x

  খ

  ((x 1)) &amp;&amp; (x

  গ

  (1 &gt; x &gt; 100) || (x
• Select from among the following character escape code which is not available in Java.
  ক

  \t

  খ

  \r

  গ

  \a

  ঘ

  \\

  ঙ

  \v
• <pre><code class="java">int x = 0, y = 0 , z = 0 ;x = (++x + y-- ) * z++;</code></pre><br>What will be the value of "x" after execution ?
  ক

  -2

  খ

  -1

  গ

  0

  ঘ

  1

  ঙ

  2
• What is the result of the expression (6 + 3) * 2 in Java?
  ক

  12

  খ

  15

  গ

  18

  ঘ

  9
• What is the value of the expression false &amp;&amp; false in Java?
  ক

  TRUE

  খ

  FALSE

  গ

  1

  ঘ

  0
• What is the result of the expression 1
  ক

  8

  খ

  4

  গ

  2

  ঘ

  3
• Which operator is used to perform logical AND in Java?
  ক

  &amp;

  খ

  |

  গ

  ^

  ঘ

  &amp;&amp;
• What is the result of the expression 7 / 0 in Java?
  ক

  It causes a runtime exception.

  খ

  NaN (Not-a-Number)

  গ

  7

  ঘ

  0
• What is the value of the expression true &amp;&amp; true in Java?
  ক

  TRUE

  খ

  FALSE

  গ

  1

  ঘ

  0
• What is the result of the expression 5 ^ 3 in Java?
  ক

  8

  খ

  15

  গ

  2

  ঘ

  0
• Which operator is used for bitwise NOT in Java?
  ক

  &amp;

  খ

  |

  গ

  ^

  ঘ

  ~
• What is the value of the expression 8
  ক

  8

  খ

  6

  গ

  4

  ঘ

  2
• What is the value of the expression false || true in Java?
  ক

  TRUE

  খ

  FALSE

  গ

  1

  ঘ

  0
• What is the result of the expression 8 / 4 in Java?
  ক

  2

  খ

  2

  গ

  4

  ঘ

  4
• Which of the following is a bitwise operator in Java?
  ক

  &amp;

  খ

  &amp;&amp;

  গ

  ||

  ঘ

  !
• What is the value of the expression 9 % 4 in Java?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  0
• Which operator is used for exponentiation in Java?
  ক

  ^

  খ

  **

  গ

  ^^

  ঘ

  ^*