Java Programming for Complete Beginners - Java 16 - Step 07 - Checked Exceptions versus Unchecked Exceptions - an Exampl

The video tutorial introduces the concepts of exception handling in Java, focusing on the differences between checked and unchecked exceptions. It provides examples using Thread.sleep to demonstrate how checked exceptions like InterruptedException must be handled using try-catch blocks or throws declarations. The tutorial also explores runtime exceptions, which do not require explicit handling. The video concludes with a summary and hints at further exploration of exception handling in future lessons.

What is the primary difference between checked and unchecked exceptions?

• Checked exceptions must be handled or declared, while unchecked exceptions do not.

• Unchecked exceptions are only thrown by the JVM, while checked exceptions are thrown by the program.

• Checked exceptions are only thrown by the JVM, while unchecked exceptions are thrown by the program.

• Unchecked exceptions must be handled or declared, while checked exceptions do not.

Which method is used to handle exceptions in Java?

• try-catch

• if-else

• for-loop

• switch-case

What does the 'throws' keyword indicate in a method signature?

• The method might throw an exception, and it must be handled by the caller.

• The method will always throw an exception.

• The method will never throw an exception.

• The method is deprecated.

Why might a method like Thread.sleep() require exception handling?

• It is a private method.

• It is a static method.

• It can throw an InterruptedException, which is a checked exception.

• It is a deprecated method.

What is a key characteristic of a runtime exception?

• It is not required to be handled or declared.

• It is checked at compile time.

• It must be handled using a try-catch block.

• It is only thrown by the JVM.

Which of the following is an example of a checked exception?

• NullPointerException

• ArithmeticException

• InterruptedException

• ArrayIndexOutOfBoundsException

What happens if a checked exception is not handled or declared?

• The program will compile but may fail at runtime.

• The exception will be ignored.

• The program will not compile.

• The program will run without any issues.