Exam 7: Inputoutput and Exception Handling

Your program will read in an existing text file. You want the program to terminate if the file does not exist. Which of the following indicates the correct code for the main method header?

Insert the missing code in the following code fragment. This fragment is intended to read all words from a text file. File inputFile = new File("dataIn.txt"); Scanner in = new Scanner(dataIn.txt); While (____________) { String input = in.next(); System.out.println(input); }

Consider the following code snippet: Scanner in = new Scanner(. . .); In)useDelimiter("[A-Za-z]+"); What characters will be read in using this code?

Consider the following code snippet: Scanner in = new Scanner(. . .); While (in.hasNextInt()) { ) . . } Under which condition will the body of the while loop be processed?

When reading words with a Scanner object, a word is defined as ____.

Which of the following statements about exception reporting is true?

Your program wishes to open a file named C:\java\myProg\input.txt on a Windows system. Which of the following is the correct code to do this?

What is the purpose of the throw statement?

Which of the following statements about exception handling is recommended by the textbook?

Consider the following code snippet written in Java 7: Try (PrintWriter outputFile = new PrintWriter(filename)) { WriteData(outputFile); } Which of the following statements about this Java 7 code is correct?

Consider the following code snippet: Scanner in = new Scanner(. . .); While (in.hasNextInt()) { ) . . } Under which condition will the body of the while loop be processed?

Your program must read in an existing text file. You want the program to terminate if the file does not exist. Which of the following indicates the correct code for the main method header?

Consider the following code snippet: Scanner in = new Scanner(. . .); Int ageValue = in.nextInt(); If there is no integer number appearing next in the input, what will occur?

Consider the following code snippet: Public double[] readInputFile(String filename) throws IOException { File inputFile = new File(filename); Scanner in = new Scanner(inputFile); Try { ReadData(in); Return data; } Finally { InputFile.close(); } } Which of the following statements about this method's code is correct?

Consider the following code snippet. Scanner in = new Scanner(. . .); While (in.hasNextDouble()) { Double input = in.nextDouble(); } Which of the following statements about this code is correct?

Consider the following code snippet. Scanner in = new Scanner(. . .); While (in.hasNextLine()) { String input = in.nextLine(); } Which of the following statements about this code is correct?

Insert the missing code in the following code fragment. This fragment is intended to write an output file named dataOut.txt that resides in a folder named reports on the C: drive of a Windows system. Public static void main(String[] args) throws IOException { PrintWriter outputFile = _______; ) . . }

The Java compiler requires that your program handle which type of exceptions?

Which of the following statements about the finally clause in a try block is NOT true?

Consider the following code snippet: Public static void main(String[] args) throws FileNotFoundException Which of the following statements about this code is correct?