Name: boT120536 Date: 03/01/2001


C:\>java -version> .txt
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

I also have BDK1.1 and JDK1.3 installed.

1. Following the instructions on
http://java.sun.com/docs/books/tutorial/javabeans/writingbean/index.html
create a simple java bean.
For example:-

import java.lang.String;
import java.io.*;

public class TestBean implements Serializable
{
  int i;

  // We must provide default ctr for JAVA/COM bridge
  public TestBean() {};
}

2. Following the instructions on
http://java.sun.com/products/plugin/1.1.1/docs/script.html generate an
ActiveX/COM object from this Java Bean.

3. From within a Visual C++ 6.0 application, instantiate and destory the
generated COM object. For example:-

CoInitialize( NULL );
TestBeanDispatchPtr pTest( _T("TestBean.Bean") );
pTest = NULL;
CoUninitialize();
  
4. Run the application. The bean is instantiated ok, and I can call methods
with no problems. However, when the application terminates (during
ExitProcess) there is an access violation in jpishare.dll (0x50301321)
(Review ID: 116699)
======================================================================

Name: boT120536 Date: 03/14/2001


When the VB 6 application is run on the Win98 system it runs ok but when I exit
the tool i get the following error.
**********
VB6 caused an invalid page fault in
module JPISHARE.DLL at 015f:50301f00.
Registers:
EAX=030004d0 CS=015f EIP=50301f00 EFLGS=00010202
EBX=50300000 SS=0167 ESP=1038fc34 EBP=1038fc70
ECX=50144b28 DS=0167 ESI=02ef2468 FS=7b77
EDX=c00195d0 ES=0167 EDI=02ef31b0 GS=0000
Bytes at CS:EIP:
ff 51 14 8b 46 08 50 8b 08 ff 51 08 83 66 08 00
Stack dump:
030004d0 02ef2460 50301cf1 00000001 02ef2460 50303a9d 02ef2460 00000000
50304e63 50300000 00000000 00000001 00000000 50300000 817fa2fc 1038fe38

****************************************
When I compile and run the same code on NT 4 with SP 6 I get the following
error when I exit the application.

*******
The instruction at "0x50301f00" referenced memory at "0x50144b3c". The memory
could not
be "read"

Microsoft Windows NT Server Verison 4.0 (Build 1381: Service Pack 6)
************

I Have a very simple Test Bean (invisible) code that I am converting into
ActiveX control. I am using the JRE ver 1.3.0_02 to convert the beans. I drop
the bean in a VB 6 application and call a method on the bean when a button on
the VB form is clicked. It works just fine. Then I save and remove the project
and exit the VB6 application. That is when I see the error as shown above. I
see the same result when I create an executable and run it and shut it down.
The Source code for test bean is as follows.

*****************************
//This is a test bean
import java.beans.*;
import java.io.*;


public class Test implements Serializable
{
public Test()
{
name = new String("John");
}

public String whoAreYou()
{
return name;
}

public void setName(String str)
{
name = str;
}

public String getName()
{
return name;
}

private String name = null;
}


**************************
Beaninfo class source code
**************************
import java.beans.*;
import java.lang.reflect.Method;
import java.util.Properties;

public class TestBeanInfo extends SimpleBeanInfo
{
public MethodDescriptor[] getMethodDescriptors()
{
Method m = null;
try
{
m=Test.class.getMethod("whoAreYou", null);
}catch(Exception e)
{
System.out.println("Exception" + e);
}
return new MethodDescriptor[] {new MethodDescriptor(m)};
}

}

***************************
Manifest file
************************
Manifest-Version: 1.0

Name: Test.class
Java-Bean: True

************************************

I am not able to pinpoint what the problem is?
(Review ID: 118437)
======================================================================