The framework supports registering an Uncaught Exception Manager to process unhandled exceptions, that is, exceptions thrown in a certain thread which completes its execution without catching the exceptions.

The framework creates a special thread group and places all bundle threads in it. In this way, when the JVM notifies of an uncaught exception in the group, the framework calls the registered Uncaught Exception Manager. In detail, to register such a manager, use the Framework Access service.

By default uncaught exception handling by the framework is not active. To turn it on, set the mbs.thread.uem system property to true.