Java Interview Guide : 200+ Interview Questions and Answers - Exception Handling - try, catch and finally

The video tutorial covers exception handling in Java, emphasizing its importance in managing defects and providing user-friendly error messages. It explains the chain of responsibility pattern, illustrating how exceptions are passed through method calls. The tutorial also highlights the role of the finally block in ensuring resource cleanup, regardless of exceptions. Key practices and scenarios where finally may not execute are discussed, along with Java-specific syntax and features.

What is the primary purpose of exception handling in Java?

• To enhance the performance of the application

• To handle errors and provide a mechanism to recover from them

• To improve the readability of the code

• To ensure the application runs faster

Why is it important to provide a unique identifier with an exception message?

• To make the message look more professional

• To help users remember the error

• To assist tech support in identifying and resolving the issue

• To confuse the user

What is the chain of responsibility pattern in exception handling?

• A pattern where exceptions are passed up the call stack until handled

• A pattern where exceptions are logged but not handled

• A pattern where exceptions are ignored

• A pattern where exceptions are handled by the first method that can handle them

In the chain of responsibility pattern, what happens if no method in the chain handles the exception?

• The exception is logged and ignored

• The exception is propagated to the JVM

• The application crashes

• The exception is ignored

What is the main purpose of the finally block in exception handling?

• To improve the performance of the application

• To execute code only when an exception occurs

• To execute code regardless of whether an exception occurs or not

• To catch exceptions that are not caught by catch blocks

Under what circumstances might a finally block not execute?

• If the catch block handles the exception

• If the JVM crashes or an exception is thrown within the finally block

• If there is a return statement in the try block

• If the exception is not thrown

Is it possible to have a try block without a catch block in Java?

• Yes, but only if there is a finally block

• No, a catch block is mandatory

• Yes, but only if there is a return statement

• No, a try block must always be followed by a catch block