This section of our 1000+ Java MCQs focuses on exception handling of Java Programming Language.
1. When does Exceptions in Java arises in code sequence?
a) Run Time
b) Compilation Time
c) Can Occur Any Time
d) None of the mentioned
View Answer
Answer: a
Explanation: Exceptions in Java are
run-time errors.
2. Which of these keywords is not a part of exception handling?
a) try
b) finally
c) thrown
d) catch
View Answer
Answer: c
Explanation: Exceptional handling is managed via 5 keywords – try, catch, throws, throw and finally.
3. Which of these keywords must be used to monitor for exceptions?
a) try
b) finally
c) throw
d) catch
View Answer
Answer: a
Explanation: None.
4. Which of these keywords must be used to handle the exception thrown by try block in some rational manner?
a) try
b) finally
c) throw
d) catch
View Answer
Answer: d
Explanation: If an exception occurs within the try block, it is thrown and cached by catch block for
processing.
5. Which of these keywords is used to manually throw an exception?
a) try
b) finally
c) throw
d) catch
View Answer
Answer: c
Explanation: None.
6. What will be the output of the following Java program?
- class exception_handling
- {
- public static void main(String args[])
- {
- try
- {
- System.out.print("Hello" + " " + 1 / 0);
- }
- catch(ArithmeticException e)
- {
- System.out.print("World");
- }
- }
- }
a) Hello
b) World
c) HelloWorld
d) Hello World
View Answer
Answer: b
Explanation: System.ou.print() function first converts the whole parameters into a string and then prints, before “Hello” goes to output stream 1 / 0 error is encountered which is cached by catch block printing just
“World”.
Output:
$ javac exception_handling.java $ java exception_handling World
7. What will be the output of the following Java program?
- class exception_handling
- {
- public static void main(String args[])
- {
- try
- {
- int a, b;
- b = 0;
- a = 5 / b;
- System.out.print("A");
- }
- catch(ArithmeticException e)
- {
- System.out.print("B");
- }
- }
- }
a) A
b) B
c) Compilation Error
d) Runtime Error
View Answer
Answer: b
Explanation: None.
Output:
$ javac exception_handling.java $ java exception_handling B
8. What will be the output of the following Java program?
- class exception_handling
- {
- public static void main(String args[])
- {
- try
- {
- int a, b;
- b = 0;
- a = 5 / b;
- System.out.print("A");
- }
- catch(ArithmeticException e)
- {
- System.out.print("B");
- }
- finally
- {
- System.out.print("C");
- }
- }
- }
a) A
b) B
c) AC
d) BC
View Answer
Answer: d
Explanation: finally keyword is used to execute the code before try and catch block end.
Output:
$ javac exception_handling.java $ java exception_handling BC
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);
- }
- }
a) 0
b) 05
c) Compilation Error
d) Runtime Error
View Answer
Answer: c
Explanation:
Value of variable sum is printed outside of try block, sum is declared only in try block, outside try block it is undefined.
Output:
$ javac exception_handling.java Exception in thread "main" java.lang.Error: Unresolved compilation problem: sum cannot be resolved to a variable
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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.
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