The Scanner's nextLine method may throw which exception? A. InputLineException B. InputMismatchException C. FileNotFoundException D. NoSuchElementException
Question
The Scanner's nextLine
method may throw which exception?
- A.
InputLineException
- B.
InputMismatchException
- C.
FileNotFoundException
- D.
NoSuchElementException
Solution
Break Down the Problem
- Identify the method in question:
Scanner.nextLine()
. - Determine the possible exceptions that can be thrown by this method as per Java documentation.
Relevant Concepts
- The
nextLine()
method in theScanner
class is used to read a line of text from the input. - Exceptions can occur during this operation, typically related to input state or the underlying stream.
Analysis and Detail
- InputLineException: This is not a standard Java exception.
- InputMismatchException: This exception occurs when the input does not match the expected type in methods like
nextInt()
ornextDouble()
, but not fornextLine()
. - FileNotFoundException: This exception is related to trying to open a non-existing file, which is not applicable in the context of
nextLine()
. - NoSuchElementException: This exception is thrown when one tries to access an element that is not present. In the case of the
nextLine()
method, it can occur if there are no more lines in the input.
Verify and Summarize
After analyzing the exceptions related to the Scanner.nextLine()
method, the only relevant exception is NoSuchElementException
. The other options do not relate directly to the behavior of nextLine()
.
Final Answer
The Scanner's nextLine
method may throw D. NoSuchElementException.
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