The methods `Thread.destroy()` and `Thread.stop(Throwable)` have been removed. They have been deprecated for several Java SE releases. The `Thread.destroy()` method has never been implemented, and the `Thread.stop(Throwable)` method has been non-functional since Java SE 8. No code should rely on the behavior of these two methods; however, any code that uses these methods will cause compilation errors. The mitigation is to remove references to these methods from the source code. Note that the no-arg method `Thread.stop()` is unaffected by this change.