Java Exception Handling Basics

What is the base class for all exceptions in Java? A) Object B) Throwable C) Exception D) RuntimeException

• B) Throwable

• D) ExceptionHandler

• A) String

• C) Error

Which keyword is used to manually throw an exception in Java? A) throw B) throws C) try D) catch

• throwsException

• throwing

• A) throw

• exception

Which of the following is a checked exception? A) ArrayIndexOutOfBoundsException B) IOException C) NullPointerException D) ArithmeticException

• ClassCastException

• IOException

• IndexOutOfBoundsException

• FileNotFoundException

Which block is used to handle exceptions in Java? A) finally B) try C) catch D) throw

• B) try

• C) catch

• A) finally

• D) throw

What will happen if an exception is not handled in a Java program? A) The program will terminate abnormally B) The program will continue execution C) The exception will be ignored D) The program will enter an infinite loop

• The program will display a warning message

• A) The program will terminate abnormally

• The program will restart from the beginning

• The program will automatically fix the error

Which of the following is an unchecked exception? A) FileNotFoundException B) IOException C) NullPointerException D) ClassNotFoundException

• NullPointerException

• NumberFormatException

• SQLException

• ArrayIndexOutOfBoundsException

What is the purpose of the finally block in exception handling? A) To catch exceptions B) To execute code regardless of an exception C) To throw exceptions D) To define checked exceptions

• B) To execute code regardless of an exception

• F) To ignore exceptions

• E) To log exceptions

• G) To define runtime exceptions

Which of the following statements is true about the throws keyword? A) It is used to catch exceptions B) It is used to declare exceptions that may be thrown C) It is used to create new exceptions D) It is used to handle exceptions

• C) It is used to create custom error messages

• B) It is used to declare exceptions that may be thrown

• A) It is used to catch runtime errors

• D) It is used to log exceptions

What type of exception is thrown when a program attempts to divide by zero? A) IOException B) ArithmeticException C) NullPointerException D) ClassCastException

• SecurityException

• B) ArithmeticException

• IndexOutOfBoundsException

• FileNotFoundException

Which of the following can be used to create a custom exception in Java? A) Extending the Exception class B) Implementing the Throwable interface C) Using the throw keyword D) All of the above

• Using the catch block

• A) Extending the Exception class

• Extending the RuntimeException class

• Creating a new class without any methods