Why is using `Throwable.getCause()` important when dealing with `ExceptionInInitializerError`?

`ExceptionInInitializerError` is a wrapper exception. When an exception occurs during static initialization, the JVM catches that original exception and wraps it inside an `ExceptionInInitializerError`. The `getCause()` method, inherited from `Throwable`, allows you to retrieve this original, underlying exception. Without `getCause()`, you would only see the `ExceptionInInitializerError` itself, which tells you *that* a static initialization failed, but not *why* or *where*. The wrapped "cause" exception provides the precise type, message, and stack trace of the actual problem, which is essential for debugging.