What is the purpose of the argument that is passed to an exception object's constructor? What happens if you do not pass an argument to the constructor?

The constructor of an exception object is a method that initializes the newly created exception object when it is triggered. This allows the developer to provide additional information about the exception, such as a custom error message or other relevant data.

The argument passed to an exception object's constructor serves as a way to provide additional information about the error that has occurred. This argument is typically a string containing a descriptive error message, but it could also be an object containing other relevant data. When the exception is caught by a try-catch block, the provided message or data can be accessed and utilized by the developer to understand the root cause and appropriately handle the exception.

If an argument is not passed to the exception object's constructor, a default exception object is created without any custom error message or data. When the exception is caught, the developer won't have any additional information about the error beyond the exception's type. This may make it more difficult to understand the root cause and handle the exception appropriately. In summary, passing an argument to the exception object's constructor allows the developer to provide a meaningful error message or data that can help in understanding the root cause of the error and handling it properly. Without providing an argument, the exception object is created with a default configuration, which may make handling and diagnosing the issue more difficult.