bluepoke/javadns — comment on commit a8c8f1a28d1c1efe741e416f546a1103d3c4ab85
File: src/de/baleipzig/javadns/DNSServer.java line 157
By nf462138:

The server worker has a thread, if it is running, it is asked to stop

Stopping it is not an instant action though, the thread is not simply killed but is asked to stop itself in a good manner, so if we caught the thread in exactly that moment where it is not running anymore but is not yet done with stopping itself, this line is displayed

PS: this should not happen really since you can not click the button anymore to actually reach this code, but it is nice to have a complete and concise code to act on all possibilities