I am using YourKit to profile my web application. If there is a Java thread listed on Yourkit's Threads-view and that one is also marked as finished, does it mean that the thread is finished but the thread-object is still present (not removed by garbage collection)? Or does Yourkit also display old finished threads without an existing thread object? I could not find any documentation about this topic.
thank you.
Those are threads that have already exited their run() method. It doesn't matter, if the thread object still exists or is already dead and collected by the GC.
So, the Threads tab in YourKit shows the real activity of threads, not Thread objects lifetimes. The thread line starts when the run() method starts and ends when the thread exits this method.