On platforms that support the concept of a thread name on their native threads, the `java.lang.Thread.setName()` method will also set that native thread name. However, this will only occur when called by the current thread, and only for threads started through the `java.lang.Thread` class (not for native threads that have attached via JNI). The presence of a native thread name can be useful for debugging and monitoring purposes. Some platforms may limit the native thread name to a length much shorter than that used by the `java.lang.Thread`, which may result in some threads having the same native name.