PASE for i native methods for Java
The IBM® i Java™ virtual machine (JVM) supports the use of native methods running in the PASE for i environment.
Support for PASE for i native methods includes:
- Full use of the native IBM i Java Native Interface (JNI) from PASE for i native methods
- The ability to call PASE for i native methods from the native IBM i JVM
This support enables you to easily port your Java applications that run in AIX® to your server. You can copy the class files and AIX native method libraries to the integrated file system on the server and run them from any of the control language (CL), Qshell or PASE for i terminal session command prompts.
When using PASE for i native methods,
you show take the following in consideration:- The architecture of the native code needs to match the architecture of the JVM. That is, object binaries need to be compiled as 32-bit binaries for a 32-bit JVM, or as 64-bit binaries for a 64-bit JVM. This also applies to agents (such as user-provided JVMTI agents).
- Example: IBM PASE for i native method for Java
The PASE for i native method for Java example calls an instance of a native C method that then uses Java Native Interface (JNI) to call back into Java code. Rather than accessing the string directly from Java code, the example calls a native method that then calls back into Java through JNI to get the string value.
Parent topic: Native methods and the Java Native Interface
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