Understanding the Delete Applet APDU

Hello all,
I'm trying to understand each byte of the delete APDU command.
I'm using this guide as a reference: http://askra.de/software/jcdocs/kit-user-2.2.1/cJDKinstaller.html#wp8960
My delete command is the following:
80 C4 01 00 08 07 (AID - 7 sets)
Is this understanding correct? When I run the command after selecting the applet, I receive a 6D00 response, stating the command structure is not supported.
Thanks,
Collin

I see you said: When I run the command after selecting the applet, I receive a 6D00 response, stating the command structure is not supported.
you must select the security domain/cardmanager, then send the delete command

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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.

I need to reprogram the delete and enter key to the left side of a external keyboard for the ipad mini. don't need the caps/lock or ctrl key and due to an injury my daughter can only use her left hand to type. She is using a text to speech app to verbaliz

I need to reprogram the delete and enter key to the left side of a external keyboard for the ipad mini. I don't need the caps/lock or ctrl key. Due to a brain injury my daughter can only use her left hand to type. She also uses a text to speech app to verbalize all of her needs since her speech isn't intelligible any longer either. And her vision was significantly affected also, so the keyboard has to be mounted about 6 inches from her face. So to reach across the keyboard with her left hand to the right side delete and enter button is physically difficult and causes typing errors, which cause people to not understand what shes trying to say.
The best keyboard so far is the Zagg folio mini. I just had to make stickers to enlarge the letters on the key buttons.
Does anyone know how I can reprogram these two keys? Or where I can buy a wireless mini keyboard for Ipad made for lefthanders with these two functions on the left side. I have searched for days and days. It's sooooo important to me that she be able to contribute her voice again. Imagine if you got in a car accident and couldn't speak clearly any longer, but understood everything still. Thanks for any help and suggestions you all take the time to share with me. I really appreciate the kindness of strangers to help me help my daughter.
Sami's mom

Sami\'s mom wrote:
I need to reprogram the delete and enter key to the left side of a external keyboard for the ipad mini.
You cannot.

Could you please help me understand the logic behind certain things in OSX?

Ok, so I try to be an open-minded guy, and I bear no particular allegiance to either OS. I own a Sony TZ and a Mac mini, and my wife has a MacBook Pro. I use both Oses.
There are certain things I have trouble understanding in th Mac OS, so what I'd really like to understand the logic behind certain design decisions in the OS, and why these might be better ways of accomplishing things. I know how to get around all of the things I mention, so I'm not looking for instructions; rather I'm looking for well-thought out explanations for why these features are the way they are.
*1. Programs don't quit when you close the window.*
- This totally puzzles me. Why design it so that program windows are independent are from the running program itself? There must be a reason, cold someone explain how this is more efficient? To me, it's simpler to click an X on the window you are working on to completely shut down a program, rather than to either mouse through menus to select quit, or be obligated to using Command Q keyboard shortcut.
*2. Menu bars are on the desktop.*
- Related to the first point, why make the main thing framing your desktop be something which is always changing depending on the program? Why have file menus outside the main window of the program. Having the menu bar on the desktop then necessitates an additional area, the dock, which has to be used as a launch bar and to tell you what programs are currently running. That obligates you to having 3 different areas of screen: 1 for program menus, 1 for running programs, and the program window itself. This seems very inefficient to me. Not to mention all the messy-looking floating palettes all over the place, again because everything is separated and not nicely contained in a single program window.
- Really, having a changing menu bar that frames the desktop isn't even consistent wth the whole desktop metaphor, which is that you place things on a desktop, like programs, files, etc. Are you changing the whole desk everytime you load a new program, yet the wallpaper stays the same? Doesn't seem to be logically consistent to me.
*3. No delete key.*
- This one really gets me. Why make such a commonly used key be a function key (Fn + Backspace)? Why make the user press a secondary key for a major function?
*4. No Cut command.*
- I read something about how Cut doesn't actually make sense when moving files around, but I obviously didn't fully understand it. Why make the user command drag, when you can just do Ctrl X??.
*5. Launching Apps from the Finder.*
- This seems weird to me, that you find and launch applications from the same thing you use to view files. Program icons in the finder are placeholders for the entire program, not files, yet they are found in the file viewer. Again, to me this seems logically mixed. I really dislike scrolling through Finder to look for apps. I know there is Spotlight and the dock (used as a quicklauncher), but these are really just workarounds for a setup which seems inherently illogical. To me at least, a menu of applications make more sense, ie, the start menu.
Anyway, those are all I can think of now, although there are other things aout OSX that don't make sense to me.
Thanks in advance! If I can understand Apple's reasoning and it is convincingly better, that will go a long way towards making me more comfortable with this OS.

1. Programs don't quit when you close the window.
That's really more a matter of what you're used to. It comes down to a programming decision as to what Apple and Microsoft considered to make sense. MS thinks that if there are no open windows, you're done using the app. Apple thinks you aren't necessarily done yet, as others have mentioned. I certainly wouldn't want Photoshop to quit every time I closed the last open image I was working on. Would be nice though if Safari would quit when I close the last open browser window. It's quick to relaunch if you really weren't done with it, so wouldn't be much of a bother to have it shut down with the last window.
2. Menu bars are on the desktop.
Makes way more sense the Microsoft's approach of repeating the same file menu on every open document in a program. How many places do you need to see File, Options and other common menu headings?
2. Menu bars are on the desktop.
Related to number two. The forward app is the only one you can directly work in, so why not have the menu bar change to reflect the choices for that application? When you go back to the previous app you were in, the menu bar changes back. So what loss of functionality is there? It comes back to not having menu bars on every single open window. There's no need or purpose for it.
3. No delete key.
Backspace does the same thing.
4. No Cut command.
Command+X, not Ctrl+X. This is Mac, not Windows. There's also very little need to ever do this from the keyboard. If you're moving files that are on the same drive/partition, then just drag and drop from the target folder window to the source. It's automatically a move. If going from one physical drive or partition to another, it's automatically a copy. Press and hold the Command key during the drag to make it a move.
Besides, you don't really think Windows cuts the entire folder or file contents into RAM, do you? If your computer has 4 GB of RAM, and you cut 12 GB of data, it of course can't possibly fit in the clipboard. All Windows does when you do a cut is visually remove the files and folders from the screen. If the items are going to a location on the same drive/partition, it does the same thing as if you did a drag and drop move. The file table is simply updated to reflect the new file or folder locations. If it's to a different drive/partition, it then performs a copy then delete action, same as OS X.
5. Launching Apps from the Finder.
A program is just as much a file as any other file. It takes up space on the drive. The OS of course knows what to do with it when you double click an app. Same as it knows what to do when you double click a document related to an app. Windows is no different. An .exe file is also just as much a file as a .doc file. The .exe extension tells Windows to try and treat it as a program to load into RAM. It's not just a simple placeholder. The program has to be made up of something.

How do I clear all of the java applets that have been downloaded?

I migrated firefox and other applications to my new mac so that I would not to reenter all of my passwords saved by firefox. However, it appears that the java applets were also transfered and one of these applets does not work with the new intel mac. I was able to get the same applet to work in safari, and I was able to delete the applet from safari as well, but was unable to do so in firefox.
So, how do I clear all of the previously downloaded applets, or even better, just the one I want to? Clearing all of the recent history didn't work.
Here is the site:
http://www.mdbg.net/chindict/chindict.php
== This happened ==
A few times a week

I did that already, and it cleared the applets for Safari, but not for Firefox.

Trying to understand the basics of iTunes

It may sound stupid, but after having read various manuals, guides, forum discussions, I still don't understand the basics of iTunes - is a 64 yo maybe too old for this?
Yes, I can fill my iPod with music and sync it with my laptop. But to manage everything well, I need answers on these questions:
- After I add my laptop folder MY MUSIC to the iTunes library, does iTunes make COPIES of all my files in that folder? Or just links? If copies, where are they stored?
- What does the term synchronisation include? Does it mean: the music in the iTunes library will be identical to the music in the iPod? Or:
- Will all changes in that folder automatically lead to updates of my iTunes library? Changes such as adding/removing files, changing filenames, modifying files with audio editors. If the contents are not automatically updated/synchronised, is there a manual way to do that?
- And vice versa: if I delete a song in iTunes, does that effect the source file in MY MUSIC? If not, is there an option to delete the song there as well?
- Could I theoretically delete the whole contents of MY MUSIC folder after all files have been added to iTunes? Is it recommended to do so? Or should I keep the 'originals'?
- The same goes for cd's: After I (automatically or manually) added the contents of a cd to iTunes, could I theoretically throw or give it away?
- There is the option to find doubles. If I want to delete one or more of them, how do I know which file I delete. I mean this: if song X is part of album A but also of a bunch of single files, then I would like to keep the album folder complete and just delete the 'single' occurrence. But how to determine that?
- Changing filenames in MY MUSIC often has no effect on the filename as displayed in iTunes. Why not?
- I think that is all for now. Maybe later I still come across more basic questions.
Could anyone give me the basic answers? And if possible in language for dummies, not in nerd slang, please
Thanks!
WimYogya
Dutchman in Indonesia

*After I add my laptop folder MY MUSIC to the iTunes library, does iTunes make COPIES of all my files in that folder? Or just links? If copies, where are they stored?*
That depends. Open iTunes and go to Edit>Preferences>Advanced. If "Copy files to iTunes Music Folder" is checked then iTunes is "copying" the files into the iTunes Music folder which is inside the iTunes folder. The library is then referenced to the location of the copy ( in this case you can if you wish delete the original). If it's unchecked it is adding the songs to to your iTunes library but referencing the location that the file is in without making a copy.
*Will all changes in that folder automatically lead to updates of my iTunes library? Changes such as adding/removing files, changing filenames, modifying files with audio editors.*
No, iTunes doesn't support folder watching so all changes have to be made within iTunes.
*If the contents are not automatically updated/synchronised, is there a manual way to do that?*
File>Add File to Library: Adding Content to iTunes
*if I delete a song in iTunes, does that effect the source file in MY MUSIC? If not, is there an option to delete the song there as well?*
iTunes will delete songs from the library and move them to Trash (Recycle Bin) only if they are in the iTunes Music folder. (iTunes will ask if you want to trash the file if this is the case, it doesn't trash it automatically). If your songs are kept outside of this folder then deleting only removes the reference to the song from the library and you have to go to the folder they are located in to trash the file itself.
*Could I theoretically delete the whole contents of MY MUSIC folder after all files have been added to iTunes? Is it recommended to do so? Or should I keep the 'originals'?*
You could only delete the songs from the original folder if you have set the preference above to copy the files to the iTunes Music folder, if not you have to keep them where they are. Regardless of where the files are stored you would be well advised to back them up in case you have problems with your computer. You might also find this article interesting/useful: iLounge - The Complete Guide to Backing Up your iTunes Library
*The same goes for cd's: After I (automatically or manually) added the contents of a cd to iTunes, could I theoretically throw or give it away?*
You don't own the copyright of the song, basically you own the license to play it. if you make a copy and then sell/give the CD away you are essentially sharing the files illegally.
*There is the option to find doubles. If I want to delete one or more of them, how do I know which file I delete. I mean this*
You would have to check the location of the file manually to be sure which one you wanted to keep.
*Changing filenames in MY MUSIC often has no effect on the filename as displayed in iTunes*
Because iTunes doesn't support folder watching, changes need to be made within iTunes. Changing the name of a file outside of iTunes can cause iTunes to lose the location of the file since it is referenced under the name it had when you added it.

Skip the DELETE command on logical standby

Hi All,
I want to skip the DELETE command on logical standby.
DB Version - 10.2
OS - Linux
Primary DB and logical standby DB .
In our DB schema some transaction tables. We delete data from those tables by delete commands.
Delete command, also delete data from logical standby DB. But we want to skip on logical standby DB .
I use following for that and get error.
ALTER DATABASE STOP LOGICAL STANDBY APPLY;
EXECUTE DBMS_LOGSTDBY.SKIP (stmt =>'DELETE TABLE', schema_name =>'TEST',object_name =>'TRANS',proc_name => null);
ALTER DATABASE START LOGICAL STANDBY APPLY IMMEDIATE;
But I got error
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'SKIP'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
When I change stmt =>'DELETE TABLE' to stmt =>'DML', no error happen
Please help me to solve this issue . This is urgent.
Thanks in advance.
Regards

Dear aditi2,
Actually it is so simple to understand the problem. Please read the following documentation and try to understand the SKIP procedure.
http://download.oracle.com/docs/cd/B14117_01/appdev.101/b10802/d_lsbydb.htm#997290
*SKIP Procedure*
Use the SKIP procedure to define filters that prevent the application of SQL statements on the logical standby database.
By default, all SQL statements executed on a primary database are applied to a logical standby database.
If only a subset of activity on a primary database is of interest for application to the standby database,
you can use the SKIP procedure to define filters that prevent the application of SQL statements on the logical standby database.
While skipping (ignoring) SQL statements is the primary goal of filters,
it is also possible to associate a stored procedure with a DDL filter so that runtime determinations can be made whether to skip the statement,
execute this statement, or execute a replacement statement.
Syntax
DBMS_LOGSTDBY.SKIP (
     stmt                      IN VARCHAR2,
     schema_name               IN VARCHAR2,
     object_name               IN VARCHAR2,
     proc_name                 IN VARCHAR2,
     use_like                  IN BOOLEAN,
     esc                       IN CHAR1);Hope That Helps.
Ogan
Edited by: Ogan Ozdogan on 30.Tem.2010 13:03

Information about the deleted sales order line item in idoc.

Hi Experts,
I am new to IDOC.We have the following idoc requirement,
When a line item is deleted from the sales order(VA02) ,
the outbound idoc getting triggered for the sales order has the information about the rest all line items other than the deleted line item.We now want the information about the deleted line item in the Idoc .
Please help me in proceeding further.

Hi,
I am facing the same scenario of capturing the deleted sales order line item in idoc.
I am using ORDRSP message type , where in E1EDP01- ACTION contains value "000" .
And the Deletion line item is not been captured, is there any configuration setting required to
capture the deleted line item in Idoc.
Based on the posting in this thread i understand that there is an indicator which has to be set .
Please let me know what is that indicator and how to set it?
Thanks
Sathish

How to set the "delete" button in Mail to actually delete instead if Archive Google Mail messages...

I know these kinds of questions are asked a lot, but I just wanted to ask my specific question for a nice specific answer.
I understand Gmail's thoughts on archiving and labels, but it makes gmail a beast to work with on mail clients. I FINALLY have everything set up perfectly on my Mac's Mail app so that everything syncs and I get no duplicate messages.
The only issue I have is that when I highlight emails and press the "trash" icon in the toolbar (and hit the delete key I assume) the message(s) is/are archived in the All Mail folder instead of going into the "Trash" folder. The only way I can truly delete messages is to drag and drop them into the Gmail/Trash folder in the side bar, which can get tedious.
Is there anyway to set the "delete" icon and delete key to actually send messages to the trash instead if archiving without causing syncing issues, or do I just need to stick with the drag and drop method?
Thank you.
Respectfully,
JAC151

Take a look here: http://jeffschuette.com/2012/03/07/setting-up-apple-mail-to-rock-and-roll-with-g mail/
Jeff explains why it happens and how to deal with it.

Delay before the Delete option is active after selecting messages

Previously I could select numerous messages (Command-A) and immediately press the Delete button in the Mail menu bar to delete the selected emails.
Since the update, there is now a delay from the time the messages are selected until when the Delete icon is active and can be clicked. It stays grayed out for maybe a second or two, like it's still processing the previous select all command. Although not a big deal, it's worth noting there was no delay before the update.

You ask:
So, how can I do that please?
But you have already answered:
selecting the photos on Album view, then pressing CMND OPTION DELETE, then CNTRL-CLICKING on iPhoto's Trash icon and choosing "Empty Trash".
Sorry but I really don't understand what you're asking.
Regards
TD

Understanding the Delete Applet APDU

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