Java Exception Handiling
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ANSWER THE FOLLOWING QUESTIONS.
- 1.Pick runtime exception?....
- A.
Class cast exception
- B.
File not found exception
- C.
Nullpointer exception
- D.
Security exception
- E.
Above all
- 2.Say true or false.The following program will compile: try { // do risky IO things } catch (IOException ioe) { // handle general IOExceptions } catch (IOException ioe) { // handle general IOExceptions }
- A.
True
- B.
False
- 3.Output of the following program try { x.doStuff(); } int y = 50; } catch(FooException fe) { }
- A.
Compile without any error
- B.
Runtime error
- C.
Compile time error
- D.
None of the above
- 4.A try with finally without catch can declare the exception
- A.
True
- B.
False
- 5.Which one of the following statement is correct?
- A.
The ‘try’ block should be followed by a ‘catch’ block.
- B.
The ‘try’ block should be followed by a ‘finally’ block.
- C.
The ‘try’ block should be followed by either a ‘catch’ block or a ‘finally’ block.
- D.
The ‘try’ block should be followed by at least two ‘catch’ blocks. The ‘try’ block should be followed by at least two ‘catch’ blocks.
- 6.Parent of Error is.......
- A.
Object
- B.
Collections
- C.
Throwable
- D.
Exception
- 7.If you throw an exception in your code, then you must declare it using the throws keyword in your method declaration.
- A.
True
- B.
False
- 8.The subclass exception should precede the base class exception when used within the catch clause.
- A.
True
- B.
False
- 9.The statements following the throw keyword in a program are not executed.
- A.
True
- B.
False
- 10.Exceptions can be caught or rethrown to a calling method.
- A.
True
- B.
False
- 11.Checked exceptions include all subtypes of Exception, including classes that extend RuntimeException.
- A.
True
- B.
False
- 12.File Not Found Exception class has descendants
- A.
True
- B.
False
- 13.In Java, exceptions are divided into two categories, namely checked and unchecked exceptions.
- A.
True
- B.
False
- 14.All subclasses of the RuntimeException and Error classes are unchecked exceptions.
- A.
True
- B.
False
- 15.When reading or writing a file it throws class not found exception
- A.
True
- B.
False
- 16.Question: Match each situation in the first list with an item in the second list. a)int[] A; A[0] = 0; b)The JVM starts running your program, but the JVM can't find the Java platform classes. (The Java platform classes reside in classes.zip or rt.jar.) c)A program is reading a stream and reaches the end of stream marker. d)Before closing the stream and after reaching the end of stream marker, a program tries to read the stream again. 1__error 2__checked exception 3__compile error 4__no exception
- A.
a-2,b-1,c-3,d-4
- B.
A-4,b-3,b-2,c-1
- C.
A-3,b-1,c-4,d-2
- D.
A-1,b-2.c-3.d-4
- 17.What are checked exceptions
- A.
Checked by java compiler
- B.
Checked by java virtual machine
- C.
Above two
- D.
None of the above
- 18.What are un checked exceptions
- A.
Checked by java compiler
- B.
Checked by java virtual machine
- C.
Above two
- D.
None of the above
- 19.What is throws in exception
- A.
A programmer can handle
- B.
A programmer can not handle
- C.
It handled by jvm
- D.
None of the above
- 20.Can i use more than one try block
- A.
True
- B.
False
- 21.Is it possible to re-throw exceptions
- A.
True
- B.
False
- 22.Creating an exception object and handling it to the run time system is called
- A.
Exception handler
- B.
Catch the exception
- C.
Pass the exception
- D.
Throwing an exception
- 23.Finally block will get invoke whether the exception is thrown or not
- A.
True
- B.
False
- 24.Benefits of java Exception handler(any 3)
- A.
Skip the errors in program
- B.
Propagating errors up the call stack
- C.
Make the program to run
- D.
Grouping & diff error type
- E.
Separating error handling code from regular business logic code
- 25.exception is available in util package
- A.
True
- B.
False
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