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Java Basics Practice Test: Exception Handling
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Quiz on basics of exception handling, exception types like throw, throws and nested try. Java exception handling is a mechanism for handling and responding to runtime errors. Exceptions are events that occur during the execution of a program that disrupt the normal flow of the program. Exception handling allows developers to detect and handle these errors in a controlled manner, preventing the program from crashing.   There are two main types of exceptions in Java: checked exceptions and unchecked exceptions. Checked exceptions are exceptions that must be explicitly handled by the... Show more
Java Basics Practice Test: Exception Handling
Time left 00:00
25 Questions

1. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
int i, sum;
sum = 10;
for (i = -1; i < 3 ;++i)
{
sum = (sum / i);
System.out.print(i);
}
}
catch(ArithmeticException e)
{
System.out.print("0");
}
}
}
2. Which of these operator is used to generate an instance of an exception than can be thrown by using throw?
3. Which of these keywords are used for generating an exception manually?
4. Which of these keywords are used for the block to be examined for exceptions?
5. Which of these class is related to all the exceptions that are explicitly thrown?
6. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
int a = args.length;
int b = 10 / a;
System.out.print(a);
}
catch (ArithmeticException e)
{
System.out.println("1");
}
}
}

Note : Execution command line : $ java exception_handling
7. What exception thrown by parseInt() method?
8. Which of these methods is used to print stack trace?
9. What will be the output of the following Java program?
class exception_handling
{
public static void main(String args[])
{
try
{
int i, sum;
sum = 10;
for (i = -1; i < 3 ;++i)
sum = (sum / i);
}
catch(ArithmeticException e)
{
System.out.print("0");
}
System.out.print(sum);
}
}
10. Which of these exceptions handles the divide by zero error?
11. Which of these classes is used to define exceptions?
12. Which of these keywords is not a part of exception handling?
13. What will be the output of the following Java code?
class Myexception extends Exception
{
int detail;
Myexception(int a)
{
detail = a;
}
public String toString()
{
return "detail";
}
}
class Output
{
static void compute (int a) throws Myexception
{
throw new Myexception(a);
}
public static void main(String args[])
{
try
{
compute(3);
}
catch(Myexception e)
{
System.out.print("Exception");
}
}
}
14. Which of the following operators is used to generate instance of an exception which can be thrown using throw?
15. Which of these class is related to all the exceptions that can be caught by using catch?
16. A single try block must be followed by which of these?
17. Which of these statements is incorrect?
18. Which of these exceptions will occur if we try to access the index of an array beyond its length?
19. What will be the output of the following Java code?
class Output
{
public static void main(String args[])
{
try
{
int a = 0;
int b = 5;
int c = b / a;
System.out.print("Hello");
}
catch(Exception e)
{
System.out.print("World");
}
}
}
20. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
throw new NullPointerException ("Hello");
System.out.print("A");
}
catch(ArithmeticException e)
{
System.out.print("B");
}
}
}
21. Which of the following is a super class of all exception type classes?
22. What will be the output of the following Java code?
class Myexception extends Exception
{
int detail;
Myexception(int a)
{
detail = a;
}
public String toString()
{
return "detail";
}
}
class Output
{
static void compute (int a) throws Myexception
{
throw new Myexception(a);
}
public static void main(String args[])
{
try
{
compute(3);
}
catch(Exception e)
{
System.out.print("Exception");
}
}
}
23. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
int a = args.length;
int b = 10 / a;
System.out.print(a);
try
{
if (a == 1)
a = a / a - a;
if (a == 2)
{
int c = {1};
c[8] = 9;
}
}
catch (ArrayIndexOutOfBoundException e)
{
System.out.println("TypeA");
}
catch (ArithmeticException e)
{
System.out.println("TypeB");
}
}
}
}

Note : Execution command line : $ java exception_handling one
24. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
int a = args.length;
int b = 10 / a;
System.out.print(a);
try
{
if (a == 1)
a = a / a - a;
if (a == 2)
{
int []c = {1};
c[8] = 9;
}
}
catch (ArrayIndexOutOfBoundException e)
{
System.out.println("TypeA");
}
catch (ArithmeticException e)
{
System.out.println("TypeB");
}
}
}
}
25. What will be the output of the following Java code?
class exception_handling
{
public static void main(String args[])
{
try
{
int a = 1;
int b = 10 / a;
try
{
if (a == 1)
a = a / a - a;
if (a == 2)
{
int c[] = {1};
c[8] = 9;
}
}
finally
{
System.out.print("A");
}
}
catch (Exception e)
{
System.out.println("B");
}
}
}

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