java.lang · java.base · since Java 1.0

Throwable

declaration

public class Throwable implements Serializable

The root of everything throwable: message, cause chain, stack trace, and suppressed exceptions. Error and Exception split beneath it.

Key methods

`String getMessage()`	The detail message — include failure-capture data (EJ 75).
`Throwable getCause()`	The chained cause set at construction or via initCause.
`StackTraceElement[] getStackTrace()`	Captured at construction — the expensive part.
`Throwable[] getSuppressed()`	Exceptions attached by try-with-resources close failures.
`void printStackTrace()`	For scratch code; production uses a logger.