Java 11 Programming for Beginners 4.4: Error Handling in Java 11

This video tutorial covers error handling in Java, focusing on exceptions. It explains the difference between checked and unchecked exceptions, and how to define new exceptions. The video also discusses the try-catch-finally construct, emphasizing the importance of handling edge cases to prevent errors. A demonstration of exception handling is provided, showing how to use try-catch blocks to manage errors and ensure code continuity.

What is the main difference between checked and unchecked exceptions in Java?

• Checked exceptions are checked at runtime, while unchecked exceptions are checked at compile time.

• Checked exceptions require handling at compile time, while unchecked exceptions do not.

• Unchecked exceptions are more severe than checked exceptions.

• Checked exceptions are only used for JVM errors.

When defining a new exception in Java, when should you extend from RuntimeException?

• When the exception is related to input/output operations.

• When the exception is not expected to happen but might occur.

• When the exception is a critical system error.

• When the exception is expected to happen frequently.

What is the purpose of the finally block in a try-catch-finally construct?

• To define multiple catch blocks for different exceptions.

• To catch exceptions that are not caught by the catch block.

• To terminate the program if an exception occurs.

• To execute code that must run regardless of whether an exception occurs.

In the context of error handling, what is an edge case?

• A scenario where exceptions are guaranteed to occur.

• A situation that is unlikely but possible, requiring special handling.

• A common case that is handled by default.

• A type of unchecked exception.

How can you handle a NumberFormatException when parsing integers in Java?

• By using a try-catch block to catch the exception.

• By using a finally block to handle the exception.

• By using a checked exception handler.

• By ignoring the exception and continuing execution.