Java: Cause Chaining and Error Context

To provide additional context while preserving the original cause.

Wrapping an exception allows you to add more meaningful context about the error situation while keeping the original exception cause intact. This is useful for debugging and understanding the stack trace. For example, in an online store, if a method fails to process a payment due to a network error, wrapping the `IOException` with a `PaymentProcessingException` can add context about the payment operation.