Exam 7: Inputoutput and Exception Handling

The PrintWriter class is an enhancement of the ____ class.

Consider the following code snippet. File hoursFile = new File("hoursWorked.txt"); Your program must read the contents of this file using a Scanner object. Which of the following is the correct syntax for doing this?

Which of the following statements about command line arguments is correct?

Consider the following code snippet: Scanner in = new Scanner(. . .); In)useDelimiter("[^0-9A-Za-z]+"); What characters will be ignored and not read in using this code?

Insert the missing code in the following code fragment. This fragment is intended to read binary data. Public static void main(String[] args) throws IOException { String address = "http://horstmann.com/bigjava.gif"; URL imageLocation = new URL(address); InputStream in = _________; ) . . }

Which of the following is the correct syntax for starting a Java program named myProg from a command line if the program requires two arguments named arg1 and arg2 to be supplied?

Which of the following statements about reading web pages is true?

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

Insert the missing code in the following code fragment. This fragment is intended to read binary data. Public static void main(String[] args) throws IOException { String address = "http://horstmann.com/bigjava.gif"; URL imageLocation = _________; InputStream in = imageLocation.openStream()); ) . . }

Consider the following code snippet: Scanner in = new Scanner(. . .); In)useDelimiter("[^A-Za-z]+"); What characters will be ignored and not read in when using this code?

Consider the following code snippet: Try { PrintWriter outputFile = new PrintWriter(filename); WriteData(outputFile); } Finally { OutputFile.close(); } Catch (IOException exception) { ) . . } Which of the following statements about this code is correct?

Which of the following statements about white space in Java is correct?

Consider the following code snippet: Public void readFile(String filename) throws FileNotFoundException { File inFile = new File(filename); Scanner in = new Scanner(inFile); ) . . } If the file cannot be located, which of the following statements about this code is correct?

You wish to use the Scanner class's nextInt() method to read in whole numbers. To avoid exceptions that would occur if the input is not a whole number, you should use the ____ method before calling nextInt.

Which of the following statements about checked and unchecked exceptions is NOT true?

Insert the missing code in the following code fragment. This code is intended to open a file and handle the situation where the file cannot be found. Public void String readFile() _________________ { File inputFile = new File(. . .); Scanner in = new Scanner(inputFile); Try { While (in.hasNext()) { ) . . } } Finally { In)close(); } }

Insert the missing code in the following code fragment. This fragment is intended to read an input file named hoursWorked.txt. You want the program to terminate if the file does not exist. Public static void main(String[] args) ______________ { File inputFile = new File("hoursWorked.txt"); Scanner in = new Scanner(inputFile); ) . . }

When you start a Java program from a command line and supply argument values, the values ____.

Which of the following statements about exception handling is correct?

When reading words using a Scanner object's next method, ____.