[Jython-users] Upgrade from 1.1 to 2.0 problems

[John E. C. <jc...@ve...>]

Hi jython-users,

While upgrading to Jython 2.0 from JPython 1.1, I have encountered a couple
of comparability problems with my old working code and 2.0.  Enclosed is a
java file that demonstrates both problems.

Problem #1. This code also throws a java.lang.NullPointerException
	at
org.python.core.InternalTables.createInternalTables(InternalTables.java:44)

If I uncomment the PySystemState.initialize();  line it will run.  I don't
need this in 1.1.   Why now?  

Problem #2. This code will also (When first problem is not encountered)
throw a 
Traceback (innermost last):
  File "<string>", line 7, in ?
java.lang.NoSuchMethodError
	at org.python.core.MakeProxies.makeAdapter(MakeProxies.java:40)...

If I remove the , 'actionPerformed=exit' from the JButton it will run. This
error is not thrown in 1.1.  
(Note that these statements are pulled from the swing demo on the 2.0 Demo
directory.)

----------------------------------------------------
package test.jython;
import org.python.util.PythonInterpreter;
import org.python.core.*;

public class InterpreterTest {
    
	public static void main(String []args) throws PyException{
        //PySystemState.initialize(); //#1
        String s2=
          "from pawt import swing"+"\n"+
          "import java"+"\n"+
          "\n"+
          "def exit(e): java.lang.System.exit(0)"+"\n"+
          "\n"+
          "frame = swing.JFrame('Swing Example', visible=1)"+"\n"+
          "button = swing.JButton('Close Me!', actionPerformed=exit)"+"\n"+
//#2
          "frame.contentPane.add(button)"+"\n"+
          "frame.pack()"
        ;
        PythonInterpreter interp = new PythonInterpreter();
        interp.exec(s2);
    }
}

-------
Appreciate any ideas, or workarounds anyone may know about.

thanks - John