If you are writing a custom exception class, how can you make sure it is checked? How can you make sure it is unchecked?

Answer: The two types of exceptions in Java are checked and unchecked exceptions. Checked exceptions are those that are checked at compile-time and require explicit handling using try-catch blocks or the throws keyword. Unchecked exceptions are runtime exceptions and do not require explicit exception handling. To create a custom checked exception class, you need to extend the java.lang.Exception class, like this: ```java public class CustomCheckedException extends Exception { public CustomCheckedException(String message) { super(message); } } ``` To create a custom unchecked exception class, you need to extend the java.lang.RuntimeException class, like this: ```java public class CustomUncheckedException extends RuntimeException { public CustomUncheckedException(String message) { super(message); } } ```