Applet sudoku
Hello, I was wondering if anyone can help me. I am designing a sudoku game for a project in uni and im struggling to use applets. The difficulty im having now is that i have paint drawing each small grid(as a colored area in the background), but I am using a for loop to create each individual jtextfield for input and within paint it causes issues. Is their a way I can create the painted background for the smaller grids and then add the jtextfields over this outside of paint?
Also any links for good applet tutorials welcome,
cheers in advance
MM
ok, im lost again:)
This is the code i have to give you an idea what im attempting to do, is this the completely wrong way to do this?
public class sudoku extends Applet {
int row[];
int column[];
JTextField game[][];
JTextField f;
JTextField n;
JButton start;
public void init() {
game=new JTextField[9][9];
public void paint(Graphics g)
super.paint(g);
g.setColor(new Color(185, 220, 250));
g.fillRect(0,0,115,115);
g.fillRect(235,0,115,115);
g.fillRect(115,115,120,120);
g.fillRect(0,235,115,115);
g.fillRect(235,235,115,115);
g.setColor(new Color(127, 203, 250));
g.fillRect(115,0,120,115);
g.fillRect(0,115,115,120);
g.fillRect(235,115,115,120);
g.fillRect(115,235,120,115);
setLayout(null);
int row=5;
int col=5;
int watcher=0;
for(int i=0; i<game.length;i++)
for(int j=0; j<game.length; j++)
if(watcher==8)
game[i][j]=new JTextField(""+ Integer.toString(i) +""+ Integer.toString(j) +"");
game[i][j].setBounds(row,col,20,20);
add(game[i][j]);
row=5;
col=col+40;
watcher=0;
System.out.println(" watcher equal 9 "+watcher+" i="+i+" j="+j+" row="+row+" col="+col);
else
game[i][j]=new JTextField();
game[i][j].setBounds(row,col,20,20);
add(game[i][j]);
row=row+40;
watcher++;
//System.out.println(" watcher not equal 9 "+watcher+" i="+i+" j="+j+" row="+row+" col="+col);
//System.out.println("minigrid =" +minigrid(i,j));
start=new JButton("Start");
start.setBounds(1,370,100,30);
add(start);
}Thanks again all!!!
MM
Similar Messages
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Server setting preventing .jar from being read/executed?
Hey guys,
I'm not completely sure this is the correct place to be posting my question, but I have been unable to find a better place for it, so hopefully someone here might be able to help me out.
Ok.
I have a signed .jar applet, that runs locally and when hosted on a server on the LAN. It also works when the .jar is hosted on my webspace given by my ISP.
However, I have a website hosted where, for some reason, the applet fails. Furthermore, it only fails when it is packaged in a .jar archive. When only using .class files it works fine, however because I need to use .jar files in order to sign them this is no longer sufficient. The exception given by the java console is :
java.lang.ClassNotFoundException: UserInterface.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://www.nickmoores.com/applet/sudoku/UserInterface/class.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Exception: java.lang.ClassNotFoundException: UserInterface.class
When I set the trace level in the java console to 5, the first exception that appears is :
java.io.FileNotFoundException: http://www.nickmoores.com/applet/sudoku/sudoku.jar
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.plugin.PluginURLJarFileCallBack.downloadJAR(Unknown Source) .... etc etc etc
To me, this indicates that it can't find the .jar. However all the web browsers I have tried manage to find the file at the URL given by the exception (ie http://www.nickmoores.com/applet/sudoku/sudoku.jar), so it is not a simple case of having misplaced the jar or giving the wrong path.
I made a simple .html page with the following html code :
<!DOCTYPE HTML PUBLIC
"-//IETF//DTD HTML LEVEL 1//EN">
<HTML>
<HEAD>
<TITLE>Blank HTML Level 1 Page</TITLE>
<META HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=utf-8">
</HEAD>
<BODY>
<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" name="SudokuApplet"
width="393" height="327"
codebase="http://java.sun.com/products/plugin/autodl/jinstall-1_5_0-windows-i586.cab#Version=1,5,0,0">
<param name="codebase" value="/applet/sudoku/" />
<param name="archive" value="sudoku.jar" />
<param name="code" value="UserInterface.class" />
<param name="type" value="application/x-java-applet" />
<comment>
<embed name="SudokuAppletFF"
archive="sudoku.jar"
codebase="http://nickmoores.pwp.blueyonder.co.uk/applet/sudoku/"
code="UserInterface.class"
width="393"
height="327"
type="application/x-java-applet"
pluginspage="http://java.sun.com/j2se/1.5.0/download.html">
<noembed>No Java Support.</noembed>
</embed>
</comment>
</object>
</BODY>
</HTML>I placed this page at my ISP webspace, my local LAN server, and the hosted site where it doesn't work, and put the .jar in the appropriate location on each server.
As expected, it works everywhere EXCEPT the hosted website. This convinced me that there is a problem on the hosted website that is somehow preventing the .jar archive from being read from object/embed html tags. This seems strange as it manages to read and load .class files fine.
I have communicated several times with the people who are hosting my site, and they haven't been too helpful so far. I've had several replies along the lines of "Can you try it now? I think it should be working" and "Have you tried testing it on a local site?", so i'm not sure they really know what the issue is.
So does anyone know what setting on the server would be preventing the .jar from being loaded?
If anyone wants to see the problem for themselves, the problem occurs at http://www.nickmoores.com/blanktest.html , but it works at http://www.nickmoores.pwp.blueyonder.co.uk . As you will see from the page source, the code is exactly the same, so it must be a server setting causing the problem, right?
Thanks guys!Try this:
<!--[if !IE]> -->
<object classid="java:**.class"
type="application/x-java-applet"
archive="**.jar"
height="350" width="550" >
<param name="code" value="***.class" />
<!-- For Konqueror -->
<param name="archive" value="***.jar" />
<param name="persistState" value="false" />
</object>
<!--<![endif]-->
<!--[if IE]>
<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
codebase="http://java.sun.com/products/plugin/autodl/jinstall-1_4-windows-i586.cab#Version=1,4,0,0"
height="350" width="550" >
<param name="archive" value="***.jar" />
<param name="code" value="***.class" />
<param name="persistState" value="false" />
</object>
<!--<![endif]--> -
hi friends
I have developed a game in java which is based on the popular sudoku puzzles.
U can get the game at
http://www.koolpages.com/shiraz/Sudokool.zip
Now the problem is that the game runs only in windows.
The main game file is an executable jar file.So double click on the file opens the game.
But in linux the jar files gets opened and shows the archived class files.
So plz help me ,how can i make the game run in linux ?
I cannot use applet bcoz the game interacts with the local files for saving records.
Moreover the java files are not compiling in linux.
I have recently installed FC4.When i try to compile java files on terminal,it gives the following warning (where i use inheritance)
eg.
class now extends JFrame
$javac now.java
Warning: The serializable class now does not declare a static final serialVersionUID field of type long
However the same file works perfectly well when run on Windows.The JVM on FC4 is 1.4.2 and even though i have installed the latest version of gcc(4.0.1)the problem still persists
Plz help me...Have you thought about generating solutions?During my extensive mind travelling in the future I've noted that Sudoku has replaced the Eight Queen problem as next year's favourite homework assignment. This forum was completely flooded with queries from desperate newbies and only a heroic round-the-clock effort from all regulars could hold the reputation up of this forum as the number one homework cheating place. Thank you all for your future effort.
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he is doing something and go to sleep on and on.
the problem is,
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for debug matter, I did the following things:
inside the thread, sysout every time he goes to sleep.
sysout in the singleton constructor.
sysout in the singleton destructor.
the output goes like this:
when refresh the page, the singleton constructor loading but not every refresh, sometimes I see the constructor output and sometimes I dont.
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someone can please shed some light?
thanks.
btw. I am working with JRE 1.1
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I did.
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Help me, please.Take a look at this example that uses a JEditor pane to hold the HTML page.
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Awesome, that worked perfectly. I Included the extra
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import java.applet.*;
import java.awt.*;
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URLConnection urlconn = url.openConnection();
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new InputStreamReader(
urlconn.getInputStream()));
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Bare with me... I'm going to learn now if this is an appropriate question here and if not where to go that would be appropriate?
I'm looking for a great iPad Sudoku game app that offers a variety of different format variations using numbers 1-9, different colors, and different shapes--that sort of thing...instead of just the common numbers. I'm not concerned about scoring the game or tracking time or the leaderboard stuff.
I've looked and found a gillion to consider including Google and looked at some for more detail but so far have found none...and maybe none exist or maybe I'll have to settle for two or three separate Sudoku games to fullfill what I'm after?
So maybe someone in the community knows of just the Sudoku app I'm looking for?
Thank you.A quick Google search provided the following: http://itunes.apple.com/us/app/sudoku-hd-for-ipad/id364909963?mt=8
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Hello
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Given an application client project, I imagine that this application can run remotely on a client machine/JRE. Then this application can use Annotations/injection facilities whenever it runs on a J2EE client container (which I assume consists of a set of libraries provided by the application server vendor, Glassfish in that case). Could this application be deployed using Java Web Start? If so, why can't it be deployed as an applet? (both options run in a client JRE, don't they?).
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@Remote
public interface HelloRemote {
public String hello(String name);
@Stateless
public class Hello implements HelloRemote {
@Override
public String hello(String name) {
return "Hello "+name+"!!";
}- an Application Client project (containing the applet code):
public class ClientApplet extends JApplet {
public void init(){
try {
Context jndiContext = getInitialContext( );
HelloRemote server = (HelloRemote) jndiContext.lookup(HelloRemote.class.getName());
setContentPane(new JLabel(server.hello("Gerard")));
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
private Context getInitialContext() throws NamingException{
Properties props = new Properties();
props.setProperty("java.naming.factory.initial", "com.sun.enterprise.naming.SerialInitContextFactory");
props.setProperty("org.omg.CORBA.ORBInitialHost", "myhost");
props.setProperty("org.omg.CORBA.ORBInitialPort", "3700");
return new InitialContext(props);
}- a static web project (with a sample web page that contains the applet object the corresponding applet JAR file)
I tried to export the Application Client project as an "application client JAR", in the hope that the java EE libraries bundled with glassfish (listed as libraries of this project) would be packaged too.
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m -
Error while accessing a public method of applet from javascript.
Hi,
I am getting "Object doesn't support this property or method" error
when accessing a public method of applet from javascript in IE 6 using
document.applets[0].myMethod();
The same is working in IE 7.
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Can not view applet in browser (IE5.5)
only my appletviewer shows my very simple applet.
in the IE5.5 i can not view my applet... ?
my applet just have write a string...
any help ?http://forum.java.sun.com/thread.jsp?forum=31&thread=276607
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A function can not be used in Applet.what's wrong?
Here is a function.
private String LoadFile() {
String input;
String output="sssssdsdsddf";
try{
FileReader f=new FileReader("shu.txt");
BufferedReader in = new BufferedReader(f);
while ((input = in.readLine())!= null){output=output+input;}
in.close();
}catch(IOException e) {
System.err.println("Exception caught: " + e.getMessage());
return output;
It can be used in Java Application,and work well.but can not be used in Applet,it does not work.what's wrong?http://www.javaworld.com/javaworld/jw-12-2000/jw-1215-security.html#sidebar1
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A function can not be used in Applet.what' wrong?
Here is a function.
private String LoadFile() {
String input;
String output="sssssdsdsddf";
try{
FileReader f=new FileReader("shu.txt");
BufferedReader in = new BufferedReader(f);
while ((input = in.readLine())!= null){output=output+input;}
in.close();
}catch(IOException e) {
System.err.println("Exception caught: " + e.getMessage());
return output;
It can be used in Java Application,and work well.but can not be used in Applet,it does not work.what's wrong?Don't you think it would be a bit of a security risk if any applet you downloaded from the web (unknowingly) could read/write to your file system....
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Cheers,
Radish21 -
Unable to delete applet.....
Hi all,
I am unable to delete one applet which I have loaded in the card.
There are 2 applets, one is purse and other is loyalty. And am using shareable interface in which loyalty is the server and purse is the client. I can delete the purse applet but i can't delete the loyalty from the card.
Here is my code : There are in all 3 codes, one is purse, second is loyalty code and third is the shareable interface code. Can some one look at the code and tell me what's wrong in this programs.
package com.gemplus.examples.loyalty;
import javacard.framework.*;
import visa.openplatform.*;
public class Loyalty extends javacard.framework.Applet implements TestInterface
static byte points ;
protected Loyalty(byte[] buffer, short offset, byte length)
// data offset is used for application specific parameter.
// initialization with default offset (AID offset).
short dataOffset = offset;
if(length > 9) {
// Install parameter detail. Compliant with OP 2.0.1.
// | size | content
// |------|---------------------------
// | 1 | [AID_Length]
// | 5-16 | [AID_Bytes]
// | 1 | [Privilege_Length]
// | 1-n | [Privilege_Bytes] (normally 1Byte)
// | 1 | [Application_Proprietary_Length]
// | 0-m | [Application_Proprietary_Bytes]
// shift to privilege offset
dataOffset += (short)(1 + buffer[offset]);
// finally shift to Application specific offset
dataOffset += (short)(1 + buffer[dataOffset]);
// checks wrong data length
if(buffer[dataOffset] != 4)
// return received proprietary data length in the reason
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + offset + length - dataOffset));
// go to proprietary data
dataOffset++;
// points = 0;
// register this instance
register(buffer, (short)(offset + 1), (byte)buffer[offset]);
* Method installing the applet.
* @param bArray the array constaining installation parameters
* @param bOffset the starting offset in bArray
* @param bLength the length in bytes of the data parameter in bArray
public static void install(byte[] bArray, short bOffset, byte bLength) throws ISOException
/* applet instance creation */
new Loyalty (bArray, bOffset, (byte)bLength);
* Select method returning true if applet selection is supported.
* @return boolean status of selection.
public boolean select()
/* return status of selection */
return true;
* Deselect method.
public void deselect()
return;
public void process(APDU apdu) throws ISOException
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
apdu.setIncomingAndReceive();
byte[] apduBuffer = apdu.getBuffer();
// writes the balance into the APDU buffer after the APDU command part
creditPoints((byte)0x00);
apduBuffer[5] = (byte)(points >> 8) ;
apduBuffer[6] = (byte)points ;
// sends the APDU response
// switches to output mode
apdu.setOutgoing() ;
// 2 bytes to return
apdu.setOutgoingLength((short)2) ;
// offset and length of bytes to return in the APDU buffer
apdu.sendBytes((short)5, (short)2) ;
public void creditPoints(byte pTobeCredited)
points += pTobeCredited;
public Shareable getShareableInterfaceObject(AID client, byte param){
if(param != (byte)0x00)
return null;
return (this);
second code is :
package com.gemplus.examples.oppurse;
* Imported packages
import javacard.framework.*;
import visa.openplatform.*;
import com.gemplus.examples.loyalty.*;
public class OPPurse extends javacard.framework.Applet
// the APDU constants for all the commands.
private final static byte INS_GET_BALANCE = (byte)0x30 ;
private final static byte INS_DEBIT = (byte)0x31 ;
private final static byte INS_CREDIT = (byte)0x32 ;
private final static byte INS_VERIFY_PIN = (byte)0x33 ;
private final static byte INS_SET_NAME = (byte)0x34 ;
private final static byte INS_GET_NAME = (byte)0x35 ;
// the OP/VOP specific instruction set for mutual authentication
private final static byte CLA_INIT_UPDATE = (byte)0x80 ;
private final static byte INS_INIT_UPDATE = (byte)0x50 ;
private final static byte CLA_EXTERNAL_AUTHENTICATE = (byte)0x84 ;
private final static byte INS_EXTERNAL_AUTHENTICATE = (byte)0x82 ;
// the PIN validity flag
private boolean validPIN = false;
// SW bytes for PIN Failed condition
// the last nibble is replaced with the number of remaining tries
private final static short SW_PIN_FAILED = (short)0x63C0;
private final static short SW_FAILED_TO_OBTAIN_SIO = (short)0x63D0;
private final static short SW_LOYALTY_APP_NOT_EXIST = (short)0x63E0;
// the illegal amount value for the exceptions.
private final static short ILLEGAL_AMOUNT = 1;
// the maximum balance in this purse.
private static final short maximumBalance = 10000;
// the current balance in this purse.
private static short balance;
/* byte[] loyaltyAID = new byte[]{ (byte)0xA0,(byte)0x00,(byte)0x00,(byte)0x00,
(byte)0x19,(byte)0xFF,(byte)0x00,(byte)0x00,
(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,
(byte)0x00,(byte)0x00,(byte)0x02,(byte)0x02};*/
/* Security part of declarations */
// the Security Object necessary to credit the purse
private ProviderSecurityDomain securityObject = null;
// the security channel number
byte secureChannel = (byte)0xFF;
// the authentication status
private boolean authenticationDone = false;
// the secure channel status
private boolean channelOpened = false;
private byte[] nameBuffer = new byte[6];
* Only this class's install method should create the applet object.
protected OPPurse(byte[] buffer, short offset, byte length)
// data offset is used for application specific parameter.
// initialization with default offset (AID offset).
short dataOffset = offset;
if(length > 9) {
// Install parameter detail. Compliant with OP 2.0.1.
// | size | content
// |------|---------------------------
// | 1 | [AID_Length]
// | 5-16 | [AID_Bytes]
// | 1 | [Privilege_Length]
// | 1-n | [Privilege_Bytes] (normally 1Byte)
// | 1 | [Application_Proprietary_Length]
// | 0-m | [Application_Proprietary_Bytes]
// shift to privilege offset
dataOffset += (short)( 1 + buffer[offset]);
// finally shift to Application specific offset
dataOffset += (short)( 1 + buffer[dataOffset]);
// checks wrong data length
if(buffer[dataOffset] != 2)
// return received proprietary data length in the reason
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + offset + length - dataOffset));
// go to proprietary data
dataOffset++;
} else {
// Install parameter compliant with OP 2.0.
if(length != 2)
ISOException.throwIt((short)(ISO7816.SW_WRONG_LENGTH + length));
// retreive the balance value from the APDU buffer
short value = (short)(((buffer[(short)(dataOffset + 1)]) & 0xFF)
| ((buffer[dataOffset] & 0xFF) << 8));
// checks initial balance value
if(value > maximumBalance)
ISOException.throwIt(ISO7816.SW_DATA_INVALID);
// initializes the balance with the APDU buffer contents
balance = value;
// register this instance as an installed Applet
register();
// ask the system for the Security Object associated to the Applet
securityObject = OPSystem.getSecurityDomain();
// applet is personalized and its state can change
OPSystem.setCardContentState(OPSystem.APPLET_PERSONALIZED);
// build the new ATR historical bytes
byte[] newATRHistory = new byte[]
// put "OPPurse" in historical bytes.
(byte)0x4F, (byte)0x50, (byte)0x50, (byte)0x75, (byte)0x72, (byte)0x73, (byte)0x65
// !!! ACTIVATED IF INSTALL PRIVILEGE IS "Default Selected" (0x04). !!!
// change the default ATR to a personalized's one
OPSystem.setATRHistBytes(newATRHistory, (short)0, (byte)newATRHistory.length);
* Method installing the applet.
* @param installparam the array constaining installation parameters
* @param offset the starting offset in installparam
* @param length the length in bytes of the data parameter in installparam
public static void install(byte[] installparam, short offset, byte length )
throws ISOException
// applet instance creation with the initial balance
new OPPurse(installparam, offset, length );
* Select method returning true if applet selection is supported.
* @return boolean status of selection.
public boolean select()
validPIN = false;
// reset security if used.
// In case of reset deselect is not called
reset_security();
// return status of selection
return true;
* Deselect method.
public void deselect()
// reset security if used.
reset_security();
return;
* Method processing an incoming APDU.
* @see APDU
* @param apdu the incoming APDU
* @exception ISOException with the response bytes defined by ISO 7816-4
public void process(APDU apdu) throws ISOException
// get the APDU buffer
// the APDU data is available in 'apduBuffer'
byte[] apduBuffer = apdu.getBuffer();
// the "try" is mandatory because the debit method
// can throw a javacard.framework.UserException
try
switch(apduBuffer[ISO7816.OFFSET_INS])
case INS_VERIFY_PIN :
verifyPIN(apdu);
break ;
case INS_GET_BALANCE :
getBalance(apdu) ;
break ;
case INS_DEBIT :
debit(apdu) ;
break ;
case INS_SET_NAME :
setName(apdu);
break;
case INS_GET_NAME :
getName(apdu);
break ;
case INS_CREDIT :
credit(apdu) ;
break ;
case INS_INIT_UPDATE :
if(apduBuffer[ISO7816.OFFSET_CLA] == CLA_INIT_UPDATE)
// call initialize/update security method
init_update(apdu) ;
else
// wrong CLA received
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
break ;
case INS_EXTERNAL_AUTHENTICATE :
if(apduBuffer[ISO7816.OFFSET_CLA] == CLA_EXTERNAL_AUTHENTICATE)
// call external/authenticate security method
external_authenticate(apdu) ;
else
// wrong CLA received
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
break ;
case ISO7816.INS_SELECT :
break ;
default :
// The INS code is not supported by the dispatcher
ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED) ;
break ;
} // end of the switch
} // end of the try
catch(UserException e)
// translates the UserException in an ISOException.
if(e.getReason() == ILLEGAL_AMOUNT)
throw new ISOException ( ISO7816.SW_DATA_INVALID ) ;
//- P R I V A T E M E T H O D S -
* Handles Verify Pin APDU.
* @param apdu APDU object
private void verifyPIN(APDU apdu)
// get APDU data
apdu.setIncomingAndReceive();
// get APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// check that the PIN is not blocked
if(OPSystem.getTriesRemaining() == 0)
OPSystem.setCardContentState(OPSystem.APPLET_BLOCKED);
// Pin format for OP specification
// |type(2),length|nible(1),nible(2)|nible(3),nible(4)|...|nible(n-1),nible(n)|
// get Pin length
byte length = (byte)(apduBuffer[ISO7816.OFFSET_LC] & 0x0F);
// pad the PIN ASCII value
for(byte i=length; i<0x0E; i++)
// only low nibble of padding is used
apduBuffer[ISO7816.OFFSET_CDATA + i] = 0x3F;
// fill header TAG
apduBuffer[0] = (byte)((0x02 << 4) | length);
// parse ASCII Pin code
for(byte i=0; i<0x0E; i++)
// fill bytes with ASCII Pin nibbles
if((i & 0x01) == 0)
// high nibble
apduBuffer[(i >> 1)+1] = (byte)((apduBuffer[ISO7816.OFFSET_CDATA + i] & 0x0F) << 4);
else
// low nibble
apduBuffer[(i >> 1)+1] |= (byte)(apduBuffer[ISO7816.OFFSET_CDATA + i] & 0x0F);
// verify the received PIN
// !!! WARNING PIN HAS TO BE INITIALIZED BEFORE USE !!!
if(OPSystem.verifyPin(apdu, (byte)0))
// set PIN validity flag
validPIN = true;
// if applet state is BLOCKED then restore previous state (PERSONALIZED)
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
OPSystem.setCardContentState(OPSystem.APPLET_PERSONALIZED);
return;
// the last nibble of returned code is the number of remaining tries
ISOException.throwIt((short)(SW_PIN_FAILED + OPSystem.getTriesRemaining()));
* Performs the "getBalance" operation on this counter.
* @param apdu The APDU to process.
private void getBalance( APDU apdu )
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// writes the balance into the APDU buffer after the APDU command part
apduBuffer[5] = (byte)(balance >> 8) ;
apduBuffer[6] = (byte)balance ;
// sends the APDU response
// switches to output mode
apdu.setOutgoing() ;
// 2 bytes to return
apdu.setOutgoingLength((short)2) ;
// offset and length of bytes to return in the APDU buffer
apdu.sendBytes((short)5, (short)2) ;
private void setName(APDU apdu)
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// the operation is allowed only if master pin is validated
if(!validPIN)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
byte[] apduBuffer = apdu.getBuffer();
apdu.setIncomingAndReceive();
for(short i=0,k=5;i<6;i++,k++)
nameBuffer[i] = apduBuffer[k];
}//end of setName
private void getName(APDU apdu)
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
byte[] apduBuffer = apdu.getBuffer();
for(short i=5, k=0;i<11;i++,k++)
apduBuffer=nameBuffer[k];
apdu.setOutgoing();
apdu.setOutgoingLength((short)6);
apdu.sendBytes((short)5,(short)6);
}//end of storeName
* Performs the "debit" operation on this counter.
* @param apdu The APDU to process.
* @exception ISOException If the APDU is invalid.
* @exception UserException If the amount to debit is invalid.
private void debit(APDU apdu) throws ISOException, UserException
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// the operation is allowed only if master pin is validated
if(!validPIN)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// Gets the length of bytes to recieved from the terminal and receives them
// If does not receive 4 bytes throws an ISO.SW_WRONG_LENGTH exception
if(apduBuffer[4] != 2 || apdu.setIncomingAndReceive() != 2)
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH) ;
// Reads the debit amount from the APDU buffer
// Starts at offset 5 in the APDU buffer since the 5 first bytes
// are used by the APDU command part
short amount = (short)(((apduBuffer[6]) & (short)0x000000FF)
| ((apduBuffer[5] << 8 ) & (short)0x0000FF00));
// tests if the debit is valid
if((balance >= amount) && (amount > 0))
// does the debit operation
balance -= amount ;
// writes the new balance into the APDU buffer
// (writes after the debit amount in the APDU buffer)
apduBuffer[7] = (byte)(balance >> 8) ;
apduBuffer[8] = (byte)balance ;
// sends the APDU response
apdu.setOutgoing() ; // Switches to output mode
apdu.setOutgoingLength((short)2) ; // 2 bytes to return
// offset and length of bytes to return in the APDU buffer
apdu.sendBytes((short)7, (short)2) ;
/*short points = 10;
AID loyaltyID = JCSystem.lookupAID(loyaltyAID, (short)0, (byte)loyaltyAID.length);
if(loyaltyID == null)
ISOException.throwIt((short)(SW_LOYALTY_APP_NOT_EXIST));
TestInterface sio = (TestInterface)(JCSystem.getAppletShareableInterfaceObject(loyaltyID, (byte)0x00));
if(sio == null)
ISOException.throwIt((short)(SW_FAILED_TO_OBTAIN_SIO));
sio.creditPoints(points);*/
else
// throw a UserException with illegal amount as reason
throw new UserException(ILLEGAL_AMOUNT) ;
/* byte points = (byte)0x0A;
//short points = 10;
AID loyaltyID = JCSystem.lookupAID(loyaltyAID, (short)0, (byte)loyaltyAID.length);
if(loyaltyID == null)
ISOException.throwIt((short)(SW_LOYALTY_APP_NOT_EXIST));
TestInterface sio = (TestInterface)JCSystem.getAppletShareableInterfaceObject(loyaltyID, (byte)0x00);
if(sio == null)
ISOException.throwIt((short)(SW_FAILED_TO_OBTAIN_SIO));
sio.creditPoints(points);*/
* Performs the "credit" operation on this counter. The operation is allowed only
* if master pin is validated
* @param apdu The APDU to process.
* @exception ISOException If the APDU is invalid or if the amount to credit
* is invalid.
private void credit(APDU apdu) throws ISOException
// check valid Applet state
if(OPSystem.getCardContentState() == OPSystem.APPLET_BLOCKED)
ISOException.throwIt(ISO7816.SW_COMMAND_NOT_ALLOWED);
// the operation is allowed only if master pin is validated and authentication is done
if (!validPIN || !authenticationDone)
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// get the APDU buffer
byte[] apduBuffer = apdu.getBuffer();
// gets the length of bytes to recieved from the terminal and receives them
// if does not receive 2 bytes throws an ISO.SW_WRONG_LENGTH exception
if(apduBuffer[4] != 2 || apdu.setIncomingAndReceive() != 2)
throw new ISOException(ISO7816.SW_WRONG_LENGTH) ;
// reads the credit amount from the APDU buffer
// starts at offset 5 in the APDU buffer since the 5 first bytes
// are used by the APDU command part
short amount = (short)(((apduBuffer[6]) & (short)0x000000FF)
| ((apduBuffer[5] << 8) & (short)0x0000FF00));
// tests if the credit is valid
if(((short)(balance + amount) > maximumBalance) || (amount <= (short)0))
throw new ISOException(ISO7816.SW_DATA_INVALID) ;
else
// does the credit operation
balance += amount ;
* Performs the "init_update" security operation.
* @param apdu The APDU to process.
private void init_update( APDU apdu )
// receives data
apdu.setIncomingAndReceive();
// checks for existing active secure channel
if(channelOpened)
// close the openned security channel
try
securityObject.closeSecureChannel(secureChannel);
catch(CardRuntimeException cre2)
// channel number is invalid. this case is ignored
// set the channel flag to close
channelOpened = false;
try
// open a new security channel
secureChannel = securityObject.openSecureChannel(apdu);
// set the channel flag to open
channelOpened = true;
// get expected length
short expected = apdu.setOutgoing();
// send authentication result
// expected length forced to 0x1C
apdu.setOutgoingLength((byte)0x1C);
apdu.sendBytes(ISO7816.OFFSET_CDATA, (byte)0x1c);
catch(CardRuntimeException cre)
// no available channel or APDU is invalid
ISOException.throwIt(ISO7816.SW_CONDITIONS_NOT_SATISFIED);
* Performs the "external_authenticate" security operation.
* @param apdu The APDU to process.
private void external_authenticate( APDU apdu )
// receives data
apdu.setIncomingAndReceive();
// checks for existing active secure channel
if(channelOpened)
try
// try to authenticate the client
securityObject.verifyExternalAuthenticate(secureChannel, apdu);
// authentication succeed
authenticationDone = true;
catch(CardRuntimeException cre)
// authentication fails
// set authentication flag to fails
authenticationDone = false;
// close the openned security channel
try {
securityObject.closeSecureChannel(secureChannel);
} catch(CardRuntimeException cre2) {
// channel number is invalid. this case is ignored
// set the channel flag to close
channelOpened = false;
// send authentication result
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
// send authentication result
ISOException.throwIt(ISO7816.SW_NO_ERROR);
else
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
* The "reset_security" method close an opened secure channel if exist.
* @return void.
public void reset_security()
// close the secure channel if openned.
if(secureChannel != (byte)0xFF)
try
// close the openned security channel
securityObject.closeSecureChannel(secureChannel);
catch(CardRuntimeException cre2)
// channel number is invalid. this case is ignored
// reset security parameters
secureChannel = (byte)0xFF;
channelOpened = false;
authenticationDone = false;
return;
and the 3rd code is:
package com.gemplus.examples.loyalty;
import javacard.framework.Shareable;
public interface TestInterface extends Shareable
// public void creditPoints(byte points) ;
public void creditPoints(byte points) ;
Thanks in advance......Thanks. I know they are not the same thing. A package cannot be deleted if it contains one or more applets.
I tried to delete by typing in the applet AID first, but it just doesn't work. And of course it doesn't work for package AID.
Both the package and applet AID are generated in JBuilder, which looks like this, package AID(6D 79 70 61 63 6B 61 67 31),
applet AID(6D 79 70 61 63 30 30 30 31),
instance AID(6D 79 70 61 63 30 30 30 31)
I've tried those three AIDs, it's not working.
Thanks. -
Applet load times got you down?
Then vote for this RFE:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6346341
The whole discussion started here:
http://forum.java.sun.com/thread.jspa?threadID=678853&tstart=0
-DennisI have the same problem, and add this replay to motivate a clever person to solve this problem.
My situation is:
20 Applets (or so) on one page - they span exactly on Thread - if clicked. And if I reload the page they never work again - I have to restart the browser.
If I browse to the page with the applets I have complete browser crash in 3 of 4 cases. But the first time I visted the page after reboot of Linux (everything less don't help) all the applets work.
If I put only one Applet on a page and reload this page, then in a few lucky cases the Applet works a second time.
On windows everything is fine, so I don't think my
Applets are the problem.
On linux I tried several version of upto Mozilla 0.9.8
everytime the same (but 0.9.8 don't work at all with the plugin).
Maybe you are looking for
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