What is an ArrayIndexOutOfBoundsException?

An ArrayIndexOutOfBoundsException occurs when an array is accessed with an illegal index.

What is a NumberFormatException?

A NumberFormatException commonly occurs in parsing when assigning a different type of variable.

What is an ArithmeticException?

An ArithmeticException occurs due to arithmetic errors such as division by zero.

What is an InputMismatchException?

An InputMismatchException occurs when inputting an invalid type of variable.

What does the Error class represent?

The Error class represents severe problems that an application should not try to catch.

What is the purpose of Exception Handling?

Exception Handling allows a program to continue by processing errors rather than stopping the program.

Why do we need Exception Handling?

To notify users about system crashes, enable saving unsaved data, and allow graceful program exit.

What happens when an exception occurs without exception handling?

The program prints exception description, prints stack trace, and terminates.

What does the printsStackTrace method do?

It prints error description such as class name and line number, and displays the sequence of calls made from main to Exception.

What is the purpose of the try block?

The try block encloses a section of code that may throw an exception.

What happens when an exception occurs in a try block?

The code stops running and jumps to the catch block to handle the error.

What is the catch block used for?

The catch block handles an exception and runs specific code when triggered.

What is the finally block?

The finally block contains code that executes regardless of whether an exception occurred.

What is the throw keyword used for?

The throw keyword is used to explicitly throw an exception, creating a custom error.

What does the throws keyword declare?

The throws keyword declares an exception type that a method may throw.

What are custom exceptions?

Custom exceptions are user-defined exceptions that extend the Exception class.

What is the Exception Hierarchy in Java?

In Java, an exception object is an instance of the class Exception, which is a subclass of the Throwable class.

What is the purpose of the assert keyword?

The assert keyword ensures the correctness of assumptions in the program and throws an AssertionError if the assumption is false.

What is a stream in Java?

A stream is defined as a flow of data from a source to a destination.

What are the fundamental stream classes in Java?

The fundamental stream classes include InputStream and OutputStream for byte streams, and Reader and Writer for character streams.

What is the BufferedReader class used for?

The BufferedReader reads text from a character input stream and temporarily stores it in memory.

What is the Scanner class used for?

The Scanner class accepts formatted inputs from any data source.

What is the purpose of the JOptionPane component?

The JOptionPane component makes inputting easy through a dialog box or outputting a message.

What is the File class in Java?

The File class is an abstract representation of file and directory pathnames.

What is the GridLayout manager?

The GridLayout manager lays out a container’s components in a rectangular grid.

What is the purpose of layout managers in Java?

Layout managers are used to position components inside containers.

What is the Event Delegation Model?

The Event Delegation Model allows you to delegate the event handler to a different class, producing a loosely coupled GUI.

What are listeners in Java?

Listeners are interfaces that allow you to handle events in Java GUI applications.

What is the use of adapter classes?

Adapter classes are used to simplify event handling by providing default implementations for listener methods.

What is the purpose of inner classes in event handling?

Inner classes are used to group UI code and event handler code together.

What is a Lambda Expression in Java?

A Lambda Expression allows you to pass unnamed functions as parameters to methods.

What is the Swing package in Java?

The Swing package is used to create window-based applications and provides lightweight components.

A JComboBox is a drop-down list that allows users to choose one of several options.

What is a JRadioButton?

A JRadioButton allows a user to select one option from a group of mutually exclusive options.

A JCheckBox allows the user to make a binary choice, typically on/off or true/false.

What is the purpose of the JButton in Swing?

A JButton is a button that can trigger an action when clicked.

What is the JFrame class?

The JFrame class is a top-level container that represents a window in a Swing application.

What is the purpose of the JLabel in Swing?

A JLabel displays a short string or an image icon, often used for descriptions or instructions.

What is the purpose of the JScrollPane in Swing?

A JScrollPane provides a scrollable view of another component, such as a JList.

What is the main difference between AWT and Swing?

AWT components are heavyweight and platform-dependent, while Swing components are lightweight and platform-independent.

What is the purpose of the main method in a Java application?

The main method is the entry point of a Java application where execution begins.

ICS2606: Computer Programming II - Exceptions and Error Handling Flashcards

Student preview

48 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is an Exception in programming?

Back

An Exception is an object representation of an abnormal condition that arises in a code sequence either at compile time or at runtime.

2.

FLASHCARD QUESTION

Front

What does the Exception object handle?

Back

The Exception object handles unexpected situations like network failure, misspelled or missing filename, and printers that suddenly go offline.

3.

FLASHCARD QUESTION

Front

What is the Exception class a subclass of?

Back

The Exception class is a subclass of the Throwable class.

4.

FLASHCARD QUESTION

Front

What are checked exceptions?

Back

Checked exceptions are recognized by the compiler and consist of all classes that directly inherit from Exception, except for RuntimeException.

5.

FLASHCARD QUESTION

Front

Give examples of checked exceptions.

Back

Examples include IOException, SQLException, and ClassNotFoundException.

6.

FLASHCARD QUESTION

Front

What are unchecked exceptions?

Back

Unchecked exceptions are RuntimeExceptions that are not recognized by the compiler.

7.

FLASHCARD QUESTION

Front

What is a NullPointerException?

Back

A NullPointerException occurs when a program attempts to process a null valued object.

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