What good books are there on JNI?

John Zukowski

Besides the free online tutorial on the Java Native Interface from Sun, there are only two books about the topic. Essential JNI from Prentice Hall by Rob Gordon, with the other being The Java Native Interface from Addison Wesley by Sheng Liang (who desinged JNI). The Gordon book seems to be the better of the two, but your mileage may vary.