Exam 11: Exceptions and Advanced File Io

When you deserialize an object using the readObject method, you must cast the return value to the desired class type.

In a multi-catch (introduced in Java 7) the exception types are separated in the catch clause by the __________ symbol.

When an exception is thrown __________.

When an exception is thrown by a method that is executing under several layers of method calls, a stack trace indicates the method executing when an exception occurred and all of the methods that were called in order to execute that method.

A catch clause that uses a parameter variable of the Exception type is capable of catching any exception that extends the Error class.

In Windows, which of the following statements will open the file, InputFile.txt, that is in the root directory on the C: drive?

An exception object's default error message can be retrieved using the __________ method.

What will the following code display? String input = "99#7"; Int number; Try { Number = Integer.parseInt(input); } Catch(NumberFormatException ex) { Number = 0; } Catch(RuntimeException ex) { Number = 1; } Catch(Exception ex) { Number = -1; } System.out.println(number);

A file that contains raw binary data is known as a __________.

If a random access file contains a stream of characters, which of the following statements would move the file pointer to the starting byte of the fifth character in the file?

In versions of Java prior to Java 7 each catch clause could handle only one type of exception.

When you write a method that throws a checked exception, you must __________.

What will be the result of the following statements? FileOutputStream fstream = new FileOutputStream("Output.dat"); DataOutputStream outputFile = new DataOutputStream(fstream);

In order for an object to be serialized, its class must implement the __________ interface.

The numeric classes' parse methods all throw an exception of __________ type if the string being converted does not contain a convertible numeric value.

The throws clause causes an exception to be thrown.

When an object is serialized, it is converted into a series of bytes that contain the object's data.

The throw statement informs the compiler that a method throws one or more exceptions.

Given the following constructor code, which of the statements are true? public Book(String ISBNOfBook, double priceOfBook, Int numberOrderedOfBook) { If (ISBNOfBook == "") Throw new BlankISBN(); If (priceOfBook < 0) Throw new NegativePrice(priceOfBook); If (numberedOrderedOfBook < 0) Throw new NegativeNumberOrdered(numberOrderedv); ISBN = ISBNOfBook; Price = priceOfBook; NumberedOrdered = numberOrderedOfBook; }

If the data.dat file does not exist, what will happen when the following statement is executed? RandomAccessFile randomFile = new RandomAccessFile("data.dat", "rw");