Exceptions MCQ

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

• What is the use of try & catch?
  ক

  It allows us to manually handle the exception

  খ

  It allows to fix errors

  গ

  It prevents automatic terminating of the program in cases when an exception occurs

  ঘ

  All of the mentioned
• What will be the result if NullPointerException occurs at line 2?<br><pre><code class="java">try{ //some code goes here}catch(NullPointerException ne){ System.out.print("1 ");}catch(RuntimeException re){ System.out.print("2 ");}finally{ System.out.print("3");}</code></pre>
  ক

  1

  খ

  3

  গ

  2 3

  ঘ

  1 3

  ঙ

  1 2 3
• Which of the below statement is/are true about Error?<br>A. An Error is a subclass of Throwable.<br>B. An Error is a subclass of Exception.<br>C. Error indicates serious problems that a reasonable application should not try to catch.<br>D. An Error is a subclass of IOException.
  ক

  A and D

  খ

  A and B

  গ

  A and C

  ঘ

  B and C

  ঙ

  B and D
• <pre><code class="java">try{ File f = new File("a.txt");}catch(Exception e){}catch(IOException io){}</code></pre><br>Is this code create new file name a.txt ?
  ক

  true

  খ

  false

  গ

  Compilation Error

  ঘ

  None of these
• Given the following piece of code:<br><pre><code class="java">class SalaryCalculationException extends Exception{}class Person{ public void calculateSalary() throws SalaryCalculationException{ //... throw new SalaryCalculationException(); //... }}class Company{ public void paySalaries(){ new Person().calculateSalary(); }}</code></pre><br>Which of the following statements is correct?<br>1. This code will compile without any problems.<br>2. This code will compile if in method paySalaries() we return a boolean in stead of void.<br>3. This code will compile if we add a try-catch block in paySalaries().<br>4. This code will compile if we add throws SalaryCalculationException in the signature of method paySalaries().
  ক

  1 and 4

  খ

  2 and 3

  গ

  2 and 4

  ঘ

  3 and 4

  ঙ

  1 and 2
• Which exception is thrown when an array element is accessed beyond the array size?
  ক

  ArrayElementOutOfBounds

  খ

  ArrayIndexOutOfBoundsException 

  গ

  ArrayIndexOutOfBounds

  ঘ

  None of these
• What happen in case of multiple catch blocks?
  ক

  Either super or subclass can be caught first.

  খ

  The superclass exception must be caught first.

  গ

  The superclass exception cannot caught first.

  ঘ

  None of these
• Which of the following blocks execute compulsorily whether exception is caught or not.
  ক

  finally

  খ

  catch

  গ

  throws

  ঘ

  throw
• Which keyword is used to specify the exception thrown by method?
  ক

  catch

  খ

  throws

  গ

  finally

  ঘ

  throw
• Which exception is thrown when divide by zero statement executes?
  ক

  NumberFormatException

  খ

  ArithmeticException

  গ

  NullPointerException

  ঘ

  None of these
• Which keyword is used to explicitly throw an exception?
  ক

  try

  খ

  throwing

  গ

  catch

  ঘ

  throw
• Exception generated in try block is caught in ........... block.
  ক

  catch

  খ

  throw

  গ

  throws

  ঘ

  finally
• In which of the following package Exception class exist?
  ক

  java.util

  খ

  java.file

  গ

  java.io

  ঘ

  java.lang

  ঙ

  java.net
• The class at the top of exception class hierarchy is .................
  ক

  ArithmeticException

  খ

  Throwable

  গ

  Object

  ঘ

  Exception
• What is the result of the following code snippet?<br><br><code>try {<br> throw new RuntimeException();<br>} catch (RuntimeException e) {<br> System.out.println("Runtime Exception!");<br>} catch (Exception e) {<br> System.out.println("Exception!");<br>}<br></code>
  ক

  Exception!

  খ

  Compilation error

  গ

  No output

  ঘ

  Runtime Exception!
• In Java, can a "catch" block catch exceptions of a subclass type before catching exceptions of a superclass type?
  ক

  Only if the superclass is marked as "static"

  খ

  Only if the subclass is marked as "final"

  গ

  Yes, a "catch" block can catch exceptions of a subclass type before a superclass type

  ঘ

  No, a "catch" block must catch exceptions of a superclass type first
• What is the result of the following code snippet?<br><br><code>try {<br> throw new ArithmeticException();<br>} catch (Exception e) {<br> System.out.println("Exception!");<br>} catch (ArithmeticException e) {<br> System.out.println("Arithmetic Exception!");<br>}<br></code>
  ক

  Arithmetic Exception!

  খ

  Compilation error

  গ

  Runtime exception

  ঘ

  Arithmetic Exception!
• In Java, can a "try" block have multiple "catch" blocks?
  ক

  No, a "try" block can have only one "catch" block

  খ

  Only if the "try" block is marked as "static"

  গ

  Yes, a "try" block can have multiple "catch" blocks to catch different types of exceptions

  ঘ

  Only if the "catch" blocks are marked as "final"
• In Java, can a "finally" block have a "return" statement?
  ক

  Yes, a "finally" block can have a "return" statement

  খ

  No, a "finally" block cannot contain a "return" statement

  গ

  Only if the method is marked as "static"

  ঘ

  Only if the "finally" block is marked as "final"
• In Java, can a method declare "throws" for a checked exception that is not thrown in the method body?
  ক

  Only if the exceptions are marked as "final"

  খ

  Only if the method is marked as "static"

  গ

  Yes, a method can declare "throws" for checked exceptions that are not thrown in the method body

  ঘ

  No, a method must throw all the exceptions it declares
• In Java, can a method declare both "throws" and "throw" statements?
  ক

  No, a method can only declare one of them

  খ

  Only if the method is marked as "static"

  গ

  Yes, a method can declare both "throws" and "throw" statements

  ঘ

  Only if the method is marked as "final"
• What is the result of the following code snippet?<br><br><code>try {<br> int result = 10 / 0;<br>} catch (ArithmeticException e) {<br> System.out.println("Arithmetic Exception!");<br>} finally {<br> System.out.println("Finally Block!");<br>}<br></code>
  ক

  No output

  খ

  Finally Block!

  গ

  Arithmetic Exception!

  ঘ

  Arithmetic Exception!<br>Finally Block!
• In Java, can a "catch" block catch exceptions of a superclass type?
  ক

  Yes, a "catch" block can catch exceptions of a superclass type

  খ

  No, a "catch" block can only catch exceptions of the exact type

  গ

  Only if the superclass is marked as "final"

  ঘ

  Only if the subclass is marked as "static"
• In Java, can a "finally" block be used without a "catch" block?
  ক

  Only if the "finally" block is marked as "final"

  খ

  Only if the "finally" block is marked as "static"

  গ

  Yes, a "finally" block can be used independently

  ঘ

  No, a "finally" block must be associated with a "catch" block
• What is the purpose of the "finally" block in Java exception handling?
  ক

  To throw exceptions explicitly

  খ

  To specify code that must be executed regardless of whether an exception is thrown or caught

  গ

  To specify the exception type

  ঘ

  To throw exceptions explicitly
• In Java, can a "finally" block be used without a "try-catch" block?
  ক

  Yes, a "finally" block can be used independently

  খ

  Only if the "finally" block is marked as "static"

  গ

  No, a "finally" block must be associated with a "try-catch" block

  ঘ

  Only if the "finally" block is marked as "final"
• What is the result of the following code snippet?<br><br><code>try {<br> String str = null;<br> System.out.println(str.length());<br>} catch (NullPointerException e) {<br> System.out.println("NullPointerException!");<br>} catch (Exception e) {<br> System.out.println("Exception!");<br>}<br></code>
  ক

  Compilation error

  খ

  No output

  গ

  Exception!

  ঘ

  NullPointerException!
• In Java, which type of exceptions are unchecked at compile-time?
  ক

  Unchecked exceptions

  খ

  Checked exceptions

  গ

  RuntimeExceptions

  ঘ

  Custom exceptions
• What is the result of the following code snippet?<br><br><code>try {<br> int num = 10 / 0;<br>} catch (ArithmeticException e) {<br> System.out.println("Arithmetic Exception!");<br>} catch (Exception e) {<br> System.out.println("Exception!");<br>}<br></code>
  ক

  Exception!

  খ

  No output

  গ

  Compilation error

  ঘ

  Arithmetic Exception!
• In Java, which type of exceptions are checked at compile-time?
  ক

  Custom exceptions

  খ

  RuntimeExceptions

  গ

  Checked exceptions

  ঘ

  Unchecked exceptions