jboolean result = env->CallBooleanMethod(obj, methodId, arg);
jboolean isRunning = env->CallBooleanMethod(serviceObj, isRunningMethod);In this example, CallBooleanMethod is used to call a boolean type method named `isRunningMethod` on a Java object `serviceObj`. The method does not take any arguments and returns a boolean value that indicates whether the service is currently running or not. Package/library: Android JNI (\android-ndk-rxx\platforms\android-xx\arch-xx\usr\include\jni.h)