Andre said:
I don't know the interfaces today. The good old JNI interface was a pain
to deal with.
JNI is for JVM -> native.
JVM -> JVM is different.
Is it really that simple in Java too:
- Write a class in any language and compile
- Compile the code to a Dll
- Use the code from any other language targeting the JVM too ?
Yes.
See example below.
Arne
====================================================================
C:\>type P.py
import J
print "I am Python"
o = J()
o.test()
C:\>type J.java
public class J {
public void test() {
System.out.println("I am Java");
ada_test.adainit(); // Ada runtime need to be initialized
a.a();
}
}
C:\>type A.adb
with Ada.Text_IO; use Ada.Text_IO;
procedure A is
begin
Put_line("I am Ada");
end A;
C:\>jgnatmake -I\jgnat-1.1p\JavaAPI A.adb
jgnatbind -aO./ -aO\jgnat-1.1p\JavaAPI -I- -x a.ali
jgnatlink a.ali
C:\>javac -classpath . J.java
C:\>call jythonc P.py
processing P
Required packages:
Creating adapters:
Creating .java files:
P module
Compiling .java to .class...
Compiling with args: ['C:\\SUNJava\\jdk1.3.1\\bin\\javac', '-classpath',
'C:\\jython21\\jython.jar; ... (all my jar files cut out)]
0 Note: Some input files use or override a deprecated API.
Note: Recompile with -deprecation for details.
C:\>java -cp
..;C:\jgnat-1.1p\lib\jgnat.jar;C:\jpywork;C:\jython21\jython.jar P
I am Python
I am Java
I am Ada
