Help with a simple Javacard application

Hi,
I am new to Java card. We have a project in which we basically have to verify a signature(the key for this would be generated on the card) on data and then have to sign the data with another key(also generated on the card).
My question is:
This looks straightforward(at least on paper) and therefore would I need to use the OPEN SC library at all? Javacard alone should be able to handle this..is it not?
Help in this direction would be greatly appreciated.
Best

858087 wrote:
Hi,
I am new to Java card. We have a project in which we basically have to verify a signature(the key for this would be generated on the card) on data and then have to sign the data with another key(also generated on the card).
My question is:
This looks straightforward(at least on paper) and therefore would I need to use the OPEN SC library at all? Javacard alone should be able to handle this..is it not?Java card alone will take care of it. You just have to use the javacard framework.
Help in this direction would be greatly appreciated.You will need to learn about the following javacard packages(classses):
javacard.security.KeyBuilder;
javacard.security.KeyPair;
javacard.security.RSAPrivateCrtKey;
javacard.security.RSAPublicKey;
javacard.security.Signature;

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    interface FastEthernet6                                                       
    interface FastEthernet7                                                       
    interface FastEthernet8                                                       
    interface FastEthernet9                                                       
    interface Vlan1                                                               
    no ip address                                                                
    ip nat inside                                                                
    ip virtual-reassembly                                                        
    interface Dialer0                                                             
    ip address negotiated                                                        
    ip mtu 1492                                                                  
    encapsulation ppp                                                            
    dialer pool 1                                                                
    ppp authentication chap                                                      
    ip forward-protocol nd                                                        
    no ip http server                                                             
    no ip http secure-server                                                      
    ip nat pool Casino 172.16.1.2 172.16.1.14 netmask 255.255.255.240             
    ip nat inside source list 1 interface Dialer0 overload                        
    access-list 1 permit 172.16.1.0 0.0.0.15                                      
    dialer-list 1 protocol ip permit                                              
    control-plane                                                                 
    line con 0                                                                    
    password 7 080E5916584B4442435E5C                                            
    login                                                                        
    line aux 0                                                                    
    password 7 013C135C0A59475A70191E                                            
    login                                                                        
    line vty 0 4                                                                  
    password 7 09635B51485756475A5954                                            
    login                                                                        
    end                                                                           
    Show IP Interface Brief
    Casino#sh ip int brief                                                        
    Interface                  IP-Address      OK? Method Status                Prl
    FastEthernet0              unassigned      YES NVRAM  administratively down do
    FastEthernet1              unassigned      YES DHCP   up                    do
    BRI0                       unassigned      YES NVRAM  administratively down do
    BRI0:1                     unassigned      YES unset  administratively down do
    BRI0:2                     unassigned      YES unset  administratively down do
    FastEthernet2              unassigned      YES unset  up                    do
    FastEthernet3              unassigned      YES unset  up                    do
    FastEthernet4              unassigned      YES unset  up                    do
    FastEthernet5              unassigned      YES unset  up                    do
    FastEthernet6              unassigned      YES unset  up                    do
    FastEthernet7              unassigned      YES unset  up                    do
    FastEthernet8              unassigned      YES unset  up                    do
    FastEthernet9              unassigned      YES unset  up                    up
    Vlan1                      unassigned      YES NVRAM  up                    up
    Loopback0                  172.16.1.1      YES manual up                    up
    Dialer0                    unassigned      YES manual up                    up
    NVI0  
    'show version'
    Casino#sh ver                                                                 
    Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(15))
    Technical Support: http://www.cisco.com/techsupport                           
    Copyright (c) 1986-2008 by Cisco Systems, Inc.                                
    Compiled Thu 24-Jan-08 13:05 by prod_rel_team                                 
    ROM: System Bootstrap, Version 12.3(8r)YH12, RELEASE SOFTWARE (fc1)           
    Casino uptime is 52 minutes                                                   
    System returned to ROM by reload at 17:09:25 UTC Fri Jul 1 2011               
    System image file is "flash:c181x-advipservicesk9-mz.124-15.T3.bin"           
    This product contains cryptographic features and is subject to United         
    States and local country laws governing import, export, transfer and          
    use. Delivery of Cisco cryptographic products does not imply                  
    third-party authority to import, export, distribute or use encryption.        
    Importers, exporters, distributors and users are responsible for              
    compliance with U.S. and local country laws. By using this product you        
    agree to comply with applicable laws and regulations. If you are unable       
    to comply with U.S. and local laws, return this product immediately.          
    A summary of U.S. laws governing Cisco cryptographic products may be found at:
    http://www.cisco.com/wwl/export/crypto/tool/stqrg.html                        
    If you require further assistance please contact us by sending email to       
    [email protected].                                                             
    Cisco 1812 (MPC8500) processor (revision 0x400) with 118784K/12288K bytes of m.
    Processor board ID FHK120622J3, with hardware revision 0000                   
    10 FastEthernet interfaces                                                    
    1 ISDN Basic Rate interface                                                   
    31488K bytes of ATA CompactFlash (Read/Write)                                 
    Configuration register is 0x2102  
    Thanks again for your help,
    Josh

  • Help with some simple coding

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    I am very new to Java and am currently studying a course in the language.
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    protected int rad; //radius of ball
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    protected double changeInY = 0.0; //vertical change in ball position in one cycle
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    public void reflectHorz(){ changeInX = -changeInX; }
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    public void move(){loc.translate((int)changeInX, (int)changeInY);}
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    public void paint (Graphics g) {
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    import java.awt.*;          //import the awt package
    import javax.swing.JFrame;     //import the JFrame class from the swing package
    public class BallWorld extends JFrame{
         public static void main (String [] args){
              BallWorld world = new BallWorld(Color.red);
              world.show();
    for(int i = 0; i < 1000; i++) world.run();
    System.exit(0);
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         public static final int FrameHeight = 400;
    private Ball aBall = new Ball(new Point (50,50),20);
         private BallWorld(Color ballColor) {     //constructor for new window
              //resize frame, initialize title
         setSize(FrameWidth, FrameHeight);
         setTitle("Ball World");
    //set colour and motion of ball
         aBall.setColor(ballColor);
         aBall.setMotion(3.0, 6.0);
         public void paint (Graphics g) {
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    super.paint(g);
         aBall.paint(g);
    public void run(){
              //move ball slightly
         aBall.move();
    Point pos =aBall.location();
    if ((pos.x < aBall.radius()) ||
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    aBall.reflectHorz();
    if ((pos.y < aBall.radius()) ||
    (pos.y > FrameHeight - aBall.radius()))
    aBall.reflectVert();
    repaint();
    try{
    Thread.sleep(50);
    } catch(InterruptedException e) {System.exit(0);}

    Here - you can study this :0))import java.awt.*;
    import javax.swing.*;
    public class MovingBall extends JFrame {
       mapPanel map   = new mapPanel();
       public MovingBall() {
          setBounds(10,10,400,300);
          setContentPane(map);
       public class mapPanel extends JPanel {
          Ball ball  = new Ball(this);
          public void paintComponent(Graphics g) {
            super.paintComponent(g);
            ball.paint(g);
    public class Ball extends Thread {
       mapPanel map;
       int x  = 200, y = 20, xi = 1, yi = 1;
    public Ball(mapPanel m) {
       map = m;
       start();
    public synchronized void run(){
       while (true) {
          try{
            sleep(10);
          catch(InterruptedException i){
            System.out.print("Interrupted: ");
          move();
    public void move() {
        map.repaint(x-1,y-1,22,22);
           if (x > map.getWidth()-20 || x < 0)  xi = xi*-1;
           if (y > map.getHeight()-20 || y < 0) yi = yi*-1;
           x = x + xi;
           y = y + yi;
           map.repaint(x-1,y-1,22,22);
        public void paint(Graphics g) {
           Graphics2D g2 = (Graphics2D)g;
           g2.setColor(Color.red);
           g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                               RenderingHints.VALUE_ANTIALIAS_ON);
           g2.fillOval(x,y,20,20);
           g2.dispose();
    public static void main(String[] args) {
       new MovingBall().show();
    }

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    <f:view>
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            <h:message for="firstNumber" />   
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            <h:message for="secondNumber" />
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    <h:panelGroup>
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      <navigation-rule>
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      <navigation-case>
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        <to-view-id>/calc/result.jsp</to-view-id>
      </navigation-case>
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    kulkarni_ash wrote:
    Thanks, looks like it is workingCan you please marked this post as "answered" if your problem has been resolved. This just save time for anyone else who might try to answer this post without knowing that it is already answered.
    Thanks and cheers.

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    5th digit 3
    6th digit (2*2 = 4) 4
    7th digit 5
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    Fourth digit value multiplied by 2 8
    Sixth digit value multiplied by 2 12
    Eighth digit value multiplied by 2 16
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    /*     File:     sinnumber.java
         Author:     Ashley
         Date:     October 2006
         Purpose: Lab1
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         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueWithVersion(ValueHandlerImpl.java:207)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:147)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.writeRMIIIOPValueType(CDROutputStream_1_0.java:801)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:850)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:864)
         at com.sun.corba.ee.impl.encoding.CDROutputStream.write_value(CDROutputStream.java:242)
         at com.sun.corba.ee.impl.copyobject.ORBStreamObjectCopierImpl.copy(ORBStreamObjectCopierImpl.java:39)
         at com.sun.corba.ee.impl.copyobject.FallbackObjectCopierImpl.copy(FallbackObjectCopierImpl.java:34)
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.copyObject(Util.java:718)
         at javax.rmi.CORBA.Util.copyObject(Util.java:316)
         at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.copyResult(DynamicMethodMarshallerImpl.java:414)
         at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:169)
         at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(Unknown Source)
         at irmsSB._UserHierarchyManagerRemote_DynamicStub.findJunior(_UserHierarchyManagerRemote_DynamicStub.java)
         at org.apache.jsp.UserHierarchyTest_jsp._jspService(UserHierarchyTest_jsp.java:100)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:105)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:336)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:297)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:247)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
         at sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
         at java.security.AccessController.doPrivileged(Native Method)
         at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
         at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
         at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
         at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
         at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
         at java.security.AccessController.doPrivileged(Native Method)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
         at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:189)
         at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doProcess(ProcessorTask.java:604)
         at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:475)
         at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:371)
         at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:264)
         at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:281)
         at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:83)
    |#]
    [#|2006-02-10T16:08:15.796+0800|WARNING|sun-appserver-pe8.2|javax.enterprise.system.stream.err|_ThreadID=16;|java.rmi.MarshalException: CORBA BAD_PARAM 1330446342 Maybe; nested exception is:
         java.io.NotSerializableException:
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:230)
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.wrapException(Util.java:651)
         at javax.rmi.CORBA.Util.wrapException(Util.java:279)
         at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:185)
         at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(Unknown Source)
         at irmsSB._UserHierarchyManagerRemote_DynamicStub.findJunior(_UserHierarchyManagerRemote_DynamicStub.java)
         at org.apache.jsp.UserHierarchyTest_jsp._jspService(UserHierarchyTest_jsp.java:100)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:105)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:336)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:297)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:247)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
         at sun.reflect.GeneratedMethodAccessor58.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
         at java.security.AccessController.doPrivileged(Native Method)
         at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
         at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
         at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
         at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
         at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
         at java.security.AccessController.doPrivileged(Native Method)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
         at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:189)
         at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doProcess(ProcessorTask.java:604)
         at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:475)
         at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:371)
         at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:264)
         at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:281)
         at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:83)
    Caused by: java.io.NotSerializableException:
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:223)
         ... 42 more
    Caused by: org.omg.CORBA.BAD_PARAM: vmcid: OMG minor code: 6 completed: Maybe
         at com.sun.corba.ee.impl.logging.OMGSystemException.notSerializable(OMGSystemException.java:989)
         at com.sun.corba.ee.impl.logging.OMGSystemException.notSerializable(OMGSystemException.java:1004)
         at com.sun.corba.ee.impl.orbutil.ORBUtility.throwNotSerializableForCorba(ORBUtility.java:718)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_abstract_interface(CDROutputStream_1_0.java:652)
         at com.sun.corba.ee.impl.encoding.CDROutputStream.write_abstract_interface(CDROutputStream.java:259)
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAbstractObject(Util.java:462)
         at javax.rmi.CORBA.Util.writeAbstractObject(Util.java:131)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.writeObjectField(IIOPOutputStream.java:724)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.outputClassFields(IIOPOutputStream.java:790)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.defaultWriteObjectDelegate(IIOPOutputStream.java:204)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.outputObject(IIOPOutputStream.java:573)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.simpleWriteObject(IIOPOutputStream.java:159)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueInternal(ValueHandlerImpl.java:225)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueWithVersion(ValueHandlerImpl.java:207)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:147)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.writeRMIIIOPValueType(CDROutputStream_1_0.java:801)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:850)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:864)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_abstract_interface(CDROutputStream_1_0.java:647)
         at com.sun.corba.ee.impl.encoding.CDROutputStream.write_abstract_interface(CDROutputStream.java:259)
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAbstractObject(Util.java:462)
         at javax.rmi.CORBA.Util.writeAbstractObject(Util.java:131)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.writeObjectOverride(IIOPOutputStream.java:138)
         at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:287)
         at java.util.ArrayList.writeObject(ArrayList.java:569)
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.invokeObjectWriter(IIOPOutputStream.java:605)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.outputObject(IIOPOutputStream.java:571)
         at com.sun.corba.ee.impl.io.IIOPOutputStream.simpleWriteObject(IIOPOutputStream.java:159)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueInternal(ValueHandlerImpl.java:225)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueWithVersion(ValueHandlerImpl.java:207)
         at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:147)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.writeRMIIIOPValueType(CDROutputStream_1_0.java:801)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:850)
         at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:864)
         at com.sun.corba.ee.impl.encoding.CDROutputStream.write_value(CDROutputStream.java:242)
         at com.sun.corba.ee.impl.copyobject.ORBStreamObjectCopierImpl.copy(ORBStreamObjectCopierImpl.java:39)
         at com.sun.corba.ee.impl.copyobject.FallbackObjectCopierImpl.copy(FallbackObjectCopierImpl.java:34)
         at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.copyObject(Util.java:718)
         at javax.rmi.CORBA.Util.copyObject(Util.java:316)
         at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.copyResult(DynamicMethodMarshallerImpl.java:414)
         at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:169)
         ... 39 more
    |#]
    anyone got any idea? thanks

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