THIS book covers the Java™ Native Interface (JNI). It will be useful to you if you are interested in any of the following: • integrating a Java application with legacy code written in languages such as C or C++ • incorporating a Java virtual machine implementation into an existing application written in languages such as C or C++ • implementing a Java virtual machine • understanding the technical issues in language interoperability, in particular how to handle features such as garbage collection and multithreading