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*EXC14-EX2*: Task processing threads such as worker threads in a thread pool or the swing event dispatch thread are permitted to catch {{RuntimeException}} when they call untrusted code through an abstraction such as {{Runnable}} \[[Goetz 2006 pg 161|AA. Bibliography#Goetz 06]\]. |
EXC14-EX3: Systems that require substantial fault tolerance or graceful degradation are permitted to catch and log general exceptions such as Throwable at appropriate levels of abstraction. Permitted examples include:
- A realtime control system that catches and logs all exceptions at the outermost layer, followed by warm-starting the system so that realtime control can continue. Such approaches are clearly justified when program termination would have safety-critical or mission-critical consequences.
- A system that catches all exceptions that propagate out of each major subsystem, logs the exceptions for later debugging, and subsequently shuts down the failing subsystem (perhaps replacing it with a much simpler, limited-functionality version) while continuing other services.
Risk Assessment
Catching RuntimeException traps several types of exceptions not intended to be caught. This prevents them from being handled properly.
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