Issue1693847

I have a small Jython test project in PyDev with structure:
src
   bpkg
      __init__.py
      AltB.py
      B.py
      NonClassCode.py

From this I wish to run jythonc to create a jar file, b.jar. Note that B.py uses a Java class A in a.jar.

AltB.py is as follows (also attached):
********************************
from NonClassCode import MyFunction

class AltB:
    def __init__(self):
        pass
    
    def giveGreeting(self, greeting):
        "@sig public java.lang.String giveGreeting(java.lang.String greeting)"
        MyFunction(greeting + " from AltB")
        return "MyFunction called OK"
    
if __name__ == '__main__':
    b = AltB()
    b.giveGreeting("Hello")
********************************

NonClassCode.py is:
********************************
def MyFunction(greeting):
    print greeting
********************************

I have set classpath to include a.jar. When I run jythonc, I get this output:
processing __init__
processing AltB
processing bpkg.NonClassCode
processing B

Note that I have tried "from bpkg.NonClassCode import MyFunction" in AltB.py, but it seems to have no effect. As this message suggests, NonClassCode.java is placed in .../jpywork/bpkg/bpkg. Note that if NonClassCode is not imported, it isn't placed in the wrong directory.

The jar file created, b.jar, has AltB in it but the method giveGreeting isn't visible. From a Java project I can create an instance of AltB, but I cannot call the method. Looking at the generated Java code, there is no public method.

This is in contrast to the following class B (in B.py):
********************************
import java
from com.ge.research.test import A

class B(java.lang.Object):
    def __init__(self):
        pass
    
    def sayHello(self, a):
        "@sig public java.lang.String sayHello(com.ge.research.test.A a)"
        return a.sayHello()
    
if __name__ == '__main__':
    b = B()
    a = A()
    b.sayHello(a)
*********************************
This generates Java code with a public method sayHello which I can call from Java code that imports AltB from b.jar.

I have not discovered the pattern of when this works as I would expect and when it does not. If there is a way to get consistent behavior please let me know.

jythonc is no longer maintained.