private static jthread alloc_thread(JNIEnvHandle jniEnv) { jniNativeInterface nativeInterface = (jniNativeInterface)Marshal.PtrToStructure(Marshal.ReadIntPtr(jniEnv.Handle), typeof(jniNativeInterface)); jclass @class = nativeInterface.FindClass(jniEnv, "java/lang/Thread"); if (@class == jclass.Null) { throw new Exception("ERROR: JNI: Cannot find %s with FindClass."); } nativeInterface.ExceptionClear(jniEnv); jmethodID method = nativeInterface.GetMethodID(jniEnv, @class, "<init>", "()V"); if (method == jmethodID.Null) { throw new Exception("Cannot find Thread constructor method."); } nativeInterface.ExceptionClear(jniEnv); jthread result = (jthread)nativeInterface.NewObject(jniEnv, @class, method); if (result == jthread.Null) { throw new Exception("Cannot create new Thread object"); } nativeInterface.ExceptionClear(jniEnv); return(result); }