Interview question based on skill :
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Total Questions: 20
1. What is an exception?
Correct Answer is : Problem arising during runtime
2. Why do we need to handle exceptions?
Correct Answer is : To prevent abnormal termination of program
3. An exception may arise when _______________
Correct Answer is : Input given is invalid
4. If a file that needs to be opened is not found in the target location then _____________
Correct Answer is : Exception will be produced
5. Which is the universal exception handler class?
Correct Answer is : Exceptions
6. What are two exception classes in hierarchy of java exceptions class?
Correct Answer is : Runtime exceptions and other exceptions
7. Which are the two blocks that are used to check error and handle the error?
Correct Answer is : Try and catch
8. There can be a try block without catch block but vice versa is not possible.
Correct Answer is : TRUE
9. How many catch blocks can a single try block can have?
Correct Answer is : As many as required
10. Which among the following is not a method of Throwable class?
Correct Answer is : public Char toString()
11. To catch the exceptions ___________________
Correct Answer is : An object must be created to catch the exception
12. Multiple catch blocks __________________
Correct Answer is : Can be combined into a single catch block
13. Which symbol should be used to separate the type of exception handler classes in a single catch block?
Correct Answer is : |
14. Which class is used to handle the input and output exceptions?
Correct Answer is : IOExceptions
15. Why do we use finally block?
Correct Answer is : To execute a code with each and every run of program
16. Which among the following best describes the constructors?
Correct Answer is : A function which is called whenever an object is created to initialize the members
17. Which among the following best describes destructor?
Correct Answer is : A function which is called just before the objects are destroyed
18. Which among the following represents correct constructor?
Correct Answer is : classname()
19. Which among the following is correct syntax for the destructors?
Correct Answer is : ~classname()
20. Which among the following is true?
Correct Answer is : First the constructor of parent classes are called in sequence of inheritance
