Send APDU form an applet to another applet

Hi,
I try to send an APDU from an applet to another applet. Both runs on the same Java Card.
With a jar-file on Eclipse:
I select the cardreader,
terminal = (CardTerminal) terminalList.get(1);establish a connection with the card,
Card card = terminal.connect("T=1");
channel = card.getBasicChannel();and send the CommandAPDU
ResponseAPDU r = channel.transmit(new CommandAPDU(data));Has so. an idea how to realize with an applet?

There are three options how two applets can exchange data:
1. Shareable Interface Object, as mentioned. Mandated if applets are in different packages.
2. Same package. If applets are in the same package, all public fields and methods are accessible.
3. Library. A package without any class extending base class Applet from javacard.framework is called a library. The applet firewall is not active in this case. All applets can access public fields and methods.

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null

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I recently read an article that described how to access other applets in the same page, but I didn't pay much attention to it because I don't write applets. However, a quick look at the API documentation for the java.applet package shows this:
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ManiForum wrote:
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Load applet within another applet?

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see http://java.sun.com/j2se/1.4.2/docs/api/java/applet/AppletContext.html

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     public javax.swing.JPanel jp;
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jp = new javax.swing.JPanel();
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Java applet calling another applet on the Javacard

Hi, I am new to JC.
I have some Java classes which I do not want others to extend. Hence, to hide these classes, I have created a set of helper classes that will provide services to these "hidden" Java classes to other calling applets, much like the way I do in J2SE. Something like a wrapper class.
The problem is, I am not sure if other applet classes can call this new helper class or not? and I am also not sure how this can be done. Can someone advise? Thanks in advance.

I'm not sure what this has to do with JavaCards.
Sounds like a simple Facade Design Pattern. Also your classes are "hidden" when you make them package protected or package private. Read J2SE packages and you'll see what I mean.
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Using an applet to call another applet

Hi,
I know that some of you may have heard this question many times before from other people, however this is an act of desperation as I have tried searching everywhere in vain for the solution.
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Yeah well this was also a bit tough for me.. but well mate.. finally cracked it.. ok here is the explanation and eg:
Suppose there are 2 applets. parent and child.. and respectively they are embeded into 2 seperate html files :
i) parent.html
ii) child.html
The task on our hand is .. when there is an event in the parent.. for eg a mouse-click or a button press.. it loads the child applet automatically.
I will demonstrate this with this example:.. here is an applet .. parent which has a button.. upon button press. it loads the child applet.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.applet.*;
public class parent extends JApplet implements ActionListener
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1.Just like a call a frame in new window.....can i call a frame in the same window.
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Your first question is not really clear to me, but the second I got. You can have an applet call another applet, you need to use getApplet or getApplets (which return Applet and Applet[] respectively). If you use getApplet you need to name your applets, while getApplets just returns every single applet on the page.
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Is it possible send a SELECT APDU from one applet to another?

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UPDATE Registrations RIGHT JOIN Registrations2
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SET Registrations.TEXT_REGISTRANT_ID = Registrations2.TEXT_REGISTRANT_ID,
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Send APDU to the card from applet on the card

Hi
I would like to send an APDU command to the card, from an applet on the actual card, in the same way I do from a PC with a card reader.
The applet would first have been triggered by an external application through a card reader.
I have seen this done on a SIM card not based on JavaCard, but I wonder if the JavaCard API allows it.
Thanks
asciz

APDU = Application Protocol Data Unit which means that this is the applicative protocol that allows a IFD to communicate with a smart card. This protocol resides on top of the TPDU (Transfer Protocol Data Unit) that defines how the data are sent to the card. I dun think that it's possible for an applet on the SIM to be able to send APDU command to another applet on the SIM without going through the smart card reader.
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Thomas
http://jaccal.sourceforge.net/

Hope u will send me the details of calling an applet from another

hai to all
i am trying to do an applet ,and it corrct in jdev ide,but trying to run in explorer
i cant connect the database,
but in applet viewer also i cant call another
applet throught a button or any thing
i hope u will send me details
and thanks a lot to Joe silva
thanks in advance
anas
null

I've not done it myself but I think you must have a name for the second applet specified in the html tag. That is how the first applet will be able to identify the second applet.
maybe..
<APPLET CODE="FirstApplet.class"></APPLET>
<APPLET CODE="SecondApplet.class" NAME="ReceiverName"></APPLET>
then in your java code
SecondApplet app = (SecondApplet) getAppletContext().getApplet("ReceiverName");
if (app != null)
<execute code>
But I've not done it, so its only a suggestion...

Is it possible to transfer data from one applet to another?

I have designed a calendar. Using the calendar,i have selected some dates. Is it possible to send the selected dates to another applet? If yes, please send the code to transmit data..

I have designed a calendar. Using the calendar,i have selected some dates. Is it possible to send the selected dates to another applet? If yes, please send the code to transmit data..

Sharing an applet with another dosn't function

Hi all,
i have a problem that i share an applet with another, but it dosn't function:
i have two applet: epurse & bank   (bank is the master)
for that i creat a class "bankInterface" that's inherit from sharable:
package pack4;
import javacard.framework.APDU;
import javacard.framework.Shareable;
public interface bankInterface extends Shareable {
public void debit(APDU apdu);
bank's declaration:
public class bank extends Applet implements bankInterface {
public Shareable getShareableInterfaceObject (AID clientAID, byte param){
return ((bankInterface)this); //or return this;
public void deselect(){
      pin.reset();
public boolean select() {
       return super.select();
public static void install(byte bArray[], short bOffset, byte bLength) throws ISOException {
       new bank();
private bank() {
register();
public void process(APDU apdu) throws ISOException {
public void debit(APDU apdu){
//empty juste for testing
}// end class 'bank'
epurse's declaration:
package pack4;
import ...
public class epurse extends Applet {
byte[] AIDServer=new byte[]{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x00, 0x00, 0x00};
public bankInterface sio;
private epurse() {
sio=(bankInterface) JCSystem.getAppletShareableInterfaceObject(JCSystem.lookupAID(AIDServer, (short)0, (byte)AIDServer.length), (byte)0);
//methods: install, select, deselect
public void process(APDU apdu) throws ISOException {
byte[] apduBuffer=apdu.getBuffer()
if(apduBuffer[ISO7816.OFFSET_CLA] == (byte)0x80){
switch(apduBuffer[ISO7816.OFFSET_INS]){
case (byte)0x34:
credit(apdu);break;
else{ ...}
}//end process
private void credit(APDU apdu){
apdu.setIncomingAndReceive();
sio.debit(apdu); // if this line is commented, i get the sw1:90 sw2: 00; else i get sw1: 6f sw2: 00 (wrong length)
}// end class epurse
i don't know where's the problem?

Hi,
If you go through the SIO concepts of JavaCard its mentioned that when "getAppletShareableInterfaceObject" is called from the client the JCRE will call "getShareableInterfaceObject" method of server with clientAID but where as you are requesting for SIO in install method before registration where the clientAID doesnt exists so the call will fail and return "null" and further references to SIO object will fail to perform expected operations.
So put request for SIO after registration of your client applet.
BR,
PPT

What are the methods called while navigating from one applet to another one

Hi All,
Could any one brief me about "When you navigate from one applet to another what are the methods called ?".
Thanks in advance.
Best Regards,
N.Madhusudhanan.

http://forum.java.sun.com/thread.jsp?forum=421&thread=426771&tstart=0&trange=100

Send APDU form an applet to another applet

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