Exceptions - Practice Questions

Question 1

What will be the output of the program?

class Exc0 extends Exception { } 
class Exc1 extends Exc0 { } /* Line 2 */
public class Test 
{  
    public static void main(String args[]) 
    { 
        try 
        {  
            throw new Exc1(); /* Line 9 */
        } 
        catch (Exc0 e0) /* Line 11 */
        {
            System.out.println("Ex0 caught"); 
        } 
        catch (Exception e) 
        {
            System.out.println("exception caught");  
        } 
    } 
}

Accepted Answer

Question 2

Which class is used to create custom exceptions?

Accepted Answer

Question 3

Which of these is a checked exception in Java?

Accepted Answer

Question 4

What will be the output of the program?

try 
{ 
    int x = 0; 
    int y = 5 / x; 
} 
catch (Exception e) 
{
    System.out.println("Exception"); 
} 
catch (ArithmeticException ae) 
{
    System.out.println(" Arithmetic Exception"); 
} 
System.out.println("finished");

Accepted Answer

Question 5

What is the purpose of the throws keyword?

Accepted Answer

Question 6

What will be the output of the program?

public class Test 
{  
    public static void aMethod() throws Exception 
    {
        try /* Line 5 */
        {
            throw new Exception(); /* Line 7 */
        } 
        finally /* Line 9 */
        {
            System.out.print("finally "); /* Line 11 */
        } 
    } 
    public static void main(String args[]) 
    {
        try 
        {
            aMethod();  
        } 
        catch (Exception e) /* Line 20 */
        {
            System.out.print("exception "); 
        } 
        System.out.print("finished"); /* Line 24 */
    } 
}

Accepted Answer

Question 7

What does the try-with-resources statement ensure?

Accepted Answer

Question 8

Which keyword is used to explicitly throw an exception?

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Question 9

Which of these exceptions is related to array operations?

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Question 10

What will be the output of the program?

public class MyProgram 
{
    public static void main(String args[])
    {
        try 
        {
            System.out.print("Hello world ");
        }
        finally 
        {
            System.out.println("Finally executing ");
        }
    }
}

Accepted Answer