I'm pretty new to the JNI, and I stumbled across this while looking into the JNI:
Not only can native code interface with Java, it can also draw on a Java Canvas, which is possible with the Java AWT Native Interface
Is there a specific reason why this functionality was made specific/is available? Does it improve processing time on Windows system? Please elaborate why and when one would use such a feature
Native performance rendering in Java... games would be the first thing to come to mind but really drawing anything that would be computationally intensive or that requires a high frame-rate would benefit.
The ability to draw directly into a Java Canvas from a native code library is extremely useful for developers planning to migrate a legacy software system to Java, especially one that includes a high-performance rendering engine. It makes it much easier to migrate in stages, leaving performance-sensitive rendering code alone, while other less-sensitive portions of code are converted to Java. The result can be a modern Java-centric application, providing the benefit of portability and development efficiency, but one that does not sacrifice an investment in performance of a key piece of native code.