Native code refers to programs that are written in another language other than Java, such as assembler or C++. You can use the Java Native Interface (JNI) to allow your Java program to interoperate with such programs. We provide details on how to do that in Openwings--see the Native Code appendix. We also offer a Native Code demo that provides an example in integrating native code. You can find this Native Code demo under the "demos" folder where you installed Openwings.