What is isWeak method of DESKeySpec class doing?

[Question.1]
According to JavaDoc, isWeak method of DESKeySpec is checking if the given DES key material is weak or semi-weak.
What is the method checking concretely?
What do weak and semi-weak mean?
[Question.2]
I want to do the same check for AES key, but there isn't AESKeySpec class like DESKeySpec.
Are there any ways to implement the check without isWeak method?

Due to the way the DES algorithm works, it is possible for certain keys to give sub keys that reduce the cryptographic strength of the cipher. Some more details are at: http://en.wikipedia.org/wiki/Weak_key#Weak_keys_in_DES.
AES does not have this test as the algorithm is considered to not have weak keys.
Shane

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Methods in SSOEnablerUtil class does not match the sample code

Hi,
Please refer to the sample code at:
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This was a part of the old package.

What is Processing Method and Processing Class in Action Profile

Dear all,
I have defined an action for case management, to trigger an email after saving the case in Enterprise portal.
Action is getting initiated in case document after saving, but after a while it is showing message 'Incorrect'.
In the actions monitor report, error message showing that some problem in Processing Method.
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Hi
DSD means Daily Salary Deduction for more check this table to understand abd DSD and the respective Processing class 77 V_T7INO1

Methods in a class

When you add more methods to a class does it increase the amount of memory the Object uses idle, or does it increase the creation time of an object?
I'm talking around 6000 lines of code, and i was just wondering if it would be better to add all related method inside the class or to make a static class that takes one of the objects as an argument and performs the actions on it.
Thanks.

Peter__Lawrey wrote:
Ok, the class is stored as one file and loading the class causes it to be unpacked (if required) and validated.
However, if you have a corrupt method, (and I have written a few with ASM) that corruption won't be detected until you call the method. e.g. illegal instructions.
The points is some loading occurs when the class is first used, but there is additional work which occurs when the method is called for the first time. I suspect the later is more significant for a larger method.Well, but that's not really performance-relevant. What you mean sounds to me like a simple run-time failure during the actual execution of the method. The statements were loaded but not executed, hence the fault remains unnoticed. It doesn't sound to me like there's any loading or verification work prior to invoking a method the first time (and it also wouldn't matter with regards to the overall amount of methods in a class), but then, I never implemented a JVM.

Final method and final class

What is final method and final class in abap objects.

ejp wrote:
Since that doesn't work--or would overyy complex to implement... would be impossible to implement. Once the method-local copy goes out of existence, ipso facto it can never be changed. This is the whole point.I consider it impossible too, but I'm not a language/compiler/runtime expert, so I allowed for the possibility that there could be some way to do it--e.g. local variables that are references in inner classes live on the heap instead of the stack, or something. My point isn't that it's possible, just that if it were somehow to be done, it would by ugly, so we may as well consider it impossible--it just ain't gonna happen.
we go with the logic, "Okay, we need to copies, but keeping them in sync is a nightmareNo, it is +meaningless.+No, it's not meaningless. If we have the two copies, and they're not final, then after the inner object is created, the method can continue running, and either the method or the inner object could modify its copy. As far as our code knows, it's the same variable, so there'd have to be some way to keep them in sync. That's either impossible or undesirably complex--like the above, it doesn't matter which--so it's final in order to get past the issue of keeping the copies in sync.

To what class does this method belong?

If one sees in the documentation something like
- (retType *) text1:(Type1 *)aType1 text2:(Type2 *)aType2;
then to what class does this method belong? I do not see in the Objective-C documentation any way that one can tell without the 'context' in which the method is declared or defined. This makes reading the documentation very difficult (for me). What you see is not what you get. There is stuff missing.
In my world there is no difficulty in determining the class to which a method belongs. It is stated explicitly in the method name. For example:
PROCEDURE (self: MyClass) methodName (arg1: Type1; arg2: Type2);
and one sees that 'methodName' belongs to 'MyClass'.
In Objective-C how does one know the class to which a method belongs? Is it only determined by context, that is, by the fact that it is within the @implementation section or that it is within the @interface section? If that is the case then I would think that in documentation one should always be required to assert something like:
<<MyClass>> -(retType *) text1:(Type1 *)aType1 ...
-Doug Danforth

PeeJay2,
I think I now have the distinctions needed but still have a question about what you said. But first here is my current understanding. A "method" is by definition bound to *at least* one class whereas a "message" need not be bound to any class. Hence one can send any message to any class and it will either be handled or ignored. A message looks like a method signature (and maybe one but is not constrained to be one).
The difference between C++ and Objective-C is that in C++ method calls are not messages sent to a receiver. They are just calls of the method for the dynamically bound object. That method must be syntactically correct at compile time whereas messages need not be syntactically correct for any receiver. At least that is my current understanding.
Now my question. You state that "casting the receiver of a message will in no way alter the flow of the code". I attempted to test this with a simple program but ran into a problem (see my new posting "Multiple classes in one file?").
Assume the following
@class Child : Parent
Child *child = [[Child alloc] init];
Parent *parent = [[Parent alloc] init];
Parent *bar;
bar = child;
[bar doSomething]; // (C) call to child's doSomething method?
[(Parent *)bar doSomething]; // (P) call to parent's doSomething method?
You comment seems to say that both case (C) and (P) give the same result. If they do then which result is it the parent's or the child's method (assuming that the child has indeed reimplemented the parent's method)? Have I understood you correctly?
-Doug Danforth

What is the purpose of Static methods inside a class?

Hi,
What is the purpose of Static methods inside a class?
I want the answers apart from "A static method does not require instance of class(to access) and it can directly be accessed by the class name itself"
My question is what is the exact purpose of a static method ?
Unlike attributes, a separate copy of instance attributes will be created for each instance of a class where as only one copy of static attributes will be created for all instances.
Will a separate copy of instance method be created for each instance of a class and only one copy of static methods be create?
Points will be rewarded for all helpful answers.

Hi Sharma,
Static methods is used to access statics attributes of a class. We use static attributes when we want to share the same attribute with all instances of a class, in this case if you chage this attribute through the instance A this change will change will be reflected in instance B, C........etc.
I think that your question is correct -> a separate copy of instance method will be created for each instance of a class and only one copy of static methods be create ?
"A static method does not require instance of class(to access) and it can directly be accessed by the class name itself"
Static Method: call method class=>method.
Instance Method: call method instance->method.
Take a look at this wiki pages.
[https://wiki.sdn.sap.com/wiki/x/o5k]
[https://wiki.sdn.sap.com/wiki/x/ZtM]
Best regards.
Marcelo Ramos

What class does setVisible() come from?

What class does the setVisible() come from?
and
Where do find the method to disable the ability to resize a window?
Thanks

These answers and more from you friendly local API...
http://java.sun.com/j2se/1.4.1/docs/api/

What types of sort performed by sort method of Array class ?

I use normal bubble sort and method Array.sort() to sort some given data of an Array and then count the time.But Array.sort() method takes more time then normal bubble sort.
Can anybody tell me what types of sort performed by sort method of Array class?

I'm pretty sure that in eariler versions (1.2, 1.3
maybe?) List.sort's docs said it used quicksort. Or I
might be on crack.You are actually both correct, and wrong :)
From the documentation of the sort methods hasn't changed in 1.2 -> 1.4 (as far as I can notice), and the documentation for sort(Object[]) says (taken from JDK 1.2 docs):
"This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
The sorting algorithm is a modified mergesort (in which the merge is omitted if the highest element in the low sublist is less than the lowest element in the high sublist). This algorithm offers guaranteed n*log(n) performance, and can approach linear performance on nearly sorted lists."
So, how could you be correct? The documentation for e.g. sort(int[]) (and all other primities) says:
"Sorts the specified array of ints into ascending numerical order. The sorting algorithm is a tuned quicksort, adapted from Jon L. Bentley and M. Douglas McIlroy's "Engineering a Sort Function", Software-Practice and Experience, Vol. 23(11) P. 1249-1265 (November 1993). This algorithm offers n*log(n) performance on many data sets that cause other quicksorts to degrade to quadratic performance."
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How do we know that which processing Class doing what functionality ?

Hi SAP HR Experts .
Q:-1 How do we know that which processing Class doing what functionality ?
Like : Processing class 1 , 2 ,... etc .
Similerly Simulation Class is On (Check Box is Ticked) then what impact we occur ?
Kind Regards : rajneesh

Hi Rajneesh,
The best way to understand the processing class is to go thru each and every class in table T512W_D ( Go to SM30 -> t512w_d ).Here in this table you will have the wagetypes ,just double click on the wagetypes and you will find the screen with processing classes. Just go thru each and every class by f1 . Each class is having its own importance and implication.
Same with Cumulation class. Go to SM30 -> enter T54C3. Follow the same logic here too, and try to analyse the max thru f1.
This is how we can understand the logic.
Regards,
Sri..

Returning a HashMap K, M from a method of a class typed M

So, this is what I have. I have a class parameterized for a bean type of a collection it receives, and in a method of the class, I need (would like) to return a HashMap typed as <K, M> as in:
public class MyClass<M> {
private Collection<M> beanList;
public HashMap<K, M> getMap( /* what do I do here */ );
}I tried to cheat from looking at the Collections.sort method, knowing it uses the List type in its return type as in:
public static <T extends Comparable<? super T>> void sort(List<T> list)So, I am trying:
public HashMap<K, M> getMap(Class<K> keyType)But, it is telling me I need to create class K.
So... how does the Collections.sort method get away with it and I can't????
I suppose I could write the method as:
public HashMap<Object, M> getMap()but became somewhat challenged by my first guess.
Any ideas... or just go with the HashMap with the untyped key?

ejp wrote:
provided K is inferable from the arguments.Or from the assignment context:
Set<String> empty = Collections.emptySet();
Otherwise you have to parameterise the class on <K, M>.You may also specifically provide K when you use the method if the context doesn't give the compiler enough information or if you want to override it.
Example:
Set<Object> singleton1 = Collections.singleton("Hello"); //error
Set<Object> singleton2 = Collections.<Object>singleton("Hello"); //fineEdited by: endasil on 14-May-2010 4:13 PM

Function Module to open a new session displaying a method of a class

Hello All,
I have a method A of class B.
Now, in my current session, I have a button. When the user clicks on this button, what I expect is that a new session be opened and in the new session method A of class B be displayed.
This is similar to the debugger, wherein, in the debugging mode, we can bring up the context menu in the Source Code (Edit Control) tool, and then select "Go To Source Code".
So basically, I am looking for a Function Module which does the same.
I came across Function Module CC_CALL_TRANSACTION_NEW_TASK, however, this will only create a new session.
I could specify the transaction as SE24, but it then opens a new session with this transaction. That is it.
My objective is to display the method of a class in a new session.
Is there any Function Module in this case?
Regards,
Mithun
Edited by: Mithun Kamath on Aug 9, 2011 5:35 PM

Hello Sandra,
Thank you very much. That was exactly what I was looking for.
However, instead of calling EDITOR_PROGRAM directly, what I instea did was the following:
1) Created a RFC enabled Function module.
2) Inside this function module, I wrote the following code:
SUBMIT tpda_editor_start AND RETURN
   WITH prgm = is_alert_det-program_name
   WITH incl = is_alert_det-include_name
   WITH dynp = space
   WITH line = is_alert_det-line_no.
The parameters above were similar to the one proposed by you.
Borrowed the above from the class CL_TPDA_SERVICES_TOOLS, method NAVIGATE_TO_SOURCE.
The above is basically called in the debugger, when we use the context menu in the editor tool and invoke the "Goto Source Code" functionality. This eventually calls the EDITOR_PROGRAM FM.
The reason why I did this is because when I was testing the FM, it did not allow me to specify the include as CL_TEST=====CM01. I do not know why, probably I was doing it wrong. But it gave me a message saying that the object does not exist in table TADIR.
Anyway, I did the above steps and it worked exactly as I wanted it to.
I would like to thank you again.
Best Regards,
Mithun
P.S. Forgot to add, I called the above RFC enabled FM as a new task.
Edited by: Mithun Kamath on Aug 10, 2011 4:19 PM

"Open method of Workbooks class failed" when opening Excel file via Internet Explorer

(apologies, I posted this first to the general Office 2010 forum, but then realized this was probably a better spot to post)
We have an Excel COM add-in installed on users' PCs. This add-in responds to workbook open events by opening a particular XLA file (also deployed to the PC) to make certain features available. This process works flawlessly when Excel files are
opened locally - but when a user attempts to open an Excel file from an IE link, we get the following error: "Open method of Workbooks class failed". This is happening on the line that is trying to open the XLA file. This only happens
when launching an Excel link from IE - works fine in Chrome or Firefox.
I have found several posts on this topic, but no solutions:
1. This post (https://social.msdn.microsoft.com/forums/office/en-US/73c96005-84af-4648-b103-32b677205be3/open-method-of-workbooks-class-failed)
is the closest to our problem. In this case, the "answer" was that the user may not have access to the 2nd workbook being opened. But in our case, we're opening an XLA that is on the local machine, and I've confirmed that it is not
corrupt and accessible (read & write, just in case!) to Everyone.
2. This (very old) post (http://www.pcreview.co.uk/forums/open-method-workbooks-fails-excel-hosted-ie-t965608.html)
seems similar, but is talking about opening Excel inside of IE. This is not what we're doing - the link is supposed to (and does) open Excel outside of IE. Interestingly, Excel.exe is being launched with the "-embedded" flag, even
though it isn't running in the IE window. When launching Excel by opening the file locally, Excel.exe is run with the "/dde" flag instead. Clearly the "-embedded" mode is what is causing the problem. I could change the
links on the web page to use some JavaScript to open Excel differently... unfortunately, the links are actually generated by SharePoint (the Excel files are in a SP repository), so this is not really an option.
3. This Microsoft KB article (http://support.microsoft.com/kb/268016) talks about problems opening an XLA directly from IE... but this is the case of a link pointing
directly to an XLA file, not opening a regular workbook that in turn opens an XLA, as is my case. In fact, this article specifically points out in the "More Information" section that "End users do not normally open XLAs; instead they open
an XLS that (if needed) loads one or more XLAs during startup." ==> precisely what I'm trying to do that is giving me the error!
I've replicated the situation with a very simple COM add-in (created in VS2010 using VB.Net) and a very simple XLA file (does nothing, just pops up a message in auto_open). For anyone wanting to try it out, here is the exact test case:
1. In Excel, create a simple XLA file containing only the following code, and save it in C:\TEMP\dummy.xla:
Sub Auto_Open()
MsgBox "Auto Open fired"
End Sub
2. In Visual Studio, create a new Excel 2010 Add-In. I created mine via Visual Basic, but I doubt the choice of language matters. Place the following code in ThisAddin.vb:
Public Class ThisAddIn
Private Sub ThisAddIn_Startup(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Startup
AddHandler Me.Application.WorkbookOpen, AddressOf Application_WorkbookOpen
End Sub
Private Sub ThisAddIn_Shutdown(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Shutdown
End Sub
Sub Application_WorkbookOpen(ByVal workbook As Excel.Workbook)
On Error GoTo ErrHandler
If (Not workbook.Name.Contains("dummy.xla")) Then
MsgBox("Workbook open")
Application.Workbooks.Open("C:\temp\dummy.xla")
Application.Workbooks("dummy.xla").RunAutoMacros(Excel.XlRunAutoMacro.xlAutoOpen)
End If
Exit Sub
ErrHandler:
MsgBox(Err.Description)
End Sub
End Class
3. Build & publish this add-in and install it on the same machine as the XLA created in step 1.
4. Create and save an empty Excel workbook (I called mine WayneTest1.xlsx) - save it locally (on your desktop), and put a copy somewhere on your web server (I put mine directly in c:\inetpub).
5. Create an HTML file with a link to that workbook, saving it to the same web server location - here is mine:
<html>
<body>
<a href="WayneTest1.xlsx">Link to Excel file</a>
</body>
</html>
6. Double click the workbook on your desktop (from step 4) - opens fine, I get the "workbook open" message, following by the "Auto Open fired" message.
7. In Internet Explorer, navigate to the HTML file specified in step 5 and click on the link - when prompted, select "Open" - I get the "workbook open" message, following by the error message "Open method of Workbooks class failed".
Here are a few things I've ruled out / tried so far:
- Unchecked all the "Protected View" settings in Excel, made no difference
- Unchecked all the "File block settings" in Excel, made no difference
- Made sure dummy.xla was open for read & write to Everyone
- Made sure the web page was in Trusted sites and set the security level to Low for those sites in IE
- Tried making the local desktop file (step 6) readonly, made no difference (i.e. launching it locally still worked fine)
- Tried using Excel 2013 - made no difference
Any ideas / suggestions?

Hello Wayne,
Apologies for the delay.
I went through your post and tried to reproduce the issue. I was able to reproduce it. Based
on its complexity and as it requires more in-depth analysis, your question falls into the paid support category which requires a more in-depth level of support.
Please visit the below link to see the various paid support options that are
available to better meet your needs. http://support.microsoft.com/default.aspx?id=fh;en-us;offerprophone
Thanks,
Anush

Calling method from another class

Got the below code for the Bank class with a log in system, Want i need is a While loop for
"While ValidUser = True, Do method in Accounts class."
package bank;
import javax.swing.*;
import java.lang.*;
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              /*User Arrays */
    public String Customer[]= new String[4];
    public String Pin[] = new String[4];
             /* User Tryed details */
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Boolean ValidUser;
public Bank ()
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    Customer[2]="Lisa";
    Customer[3]="Liam";
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    Pin[1]="1982";
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public String getUser()
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public String getPin()
    return PinAuth;
public void setUser(String CustAtt)
    User = CustAtt;
public void setPin(String PinAtt)
    PinAuth = PinAtt;
public static void main    (String args[] ){
System.out.println("Welcome to The Bank of Scotland");
      String User;
      String PinAtt;
    boolean ValidUser;
      /* Get User Details */
     User =
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     PinAtt =
            JOptionPane.showInputDialog("Enter your Pin");
/* Print USer Details */
     System.out.println(User);
     System.out.println(PinAtt);
/* Authorise Customer */
Bank newBank = new Bank();
for(int i=0; i<4;i++)
if(User.equals(newBank.Customer) && PinAtt.equals(newBank.Pin[i]))
ValidUser=true;
else
ValidUser=false;
if(ValidUser=true)
System.out.println("Auth");
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while(ValidUser=true)
Account Class, in this class i need options for selecting withdraw deposit and close account, not sure if i could do this in the Current account class though.
Any advice will be great package bank;
import javax.swing.*;
import java.lang.*;
public class Account {
private String AccountNo;
private int Balance;
private int Deposit;
String AccountUsed;
public Account () {
public String getAccountNo ()
return AccountNo;
public void setAccountNo (int val) {
AccountUsed = AccountNo;
public int getBalance () {
return Balance;
public void setBalance (int val) {
this.Balance = val;
public int getDeposit ()
return Deposit;
public void setDeposit (int val)
this.Deposit = val;
this.Balance=this.Balance+this.Deposit;
public void setWithdrawl (int val)
this.Balance=this.Balance-val;
public static void account (String args[] ){
String Deposit = new String();
String Withdraw = new String() ;
System.out.println("Deposit - Withdraw");
Account newAccount = new Account();
Deposit =
JOptionPane.showInputDialog("Enter the ammount you wish to deposit");
Withdraw =
JOptionPane.showInputDialog("Enter the amount you wish to Withdraw");
System.out.println(Deposit);
System.out.println(Withdraw);
Account custAccount =new Account();
custAccount.setDeposit(Integer.parseInt(Deposit));
custAccount.setWithdrawl(Integer.parseInt(Withdraw));
System.out.println(custAccount.getBalance());

Maxideon wrote:
All of these are valid,
while(validUser == true) {
while(validUser) {
//I prefer this one
if(validUser == true) {
if(validUser) {
//I prefer this one
} What you have,
if(validUser = true) {
if(validUser = false) {
}is different. I have two equal signs, while you have one. What do you think one equal sign does?
P.S. All your variable names are screwed up. They should begin with a lower case letter.
Edit
Some other anomalies: you declared ValidUser as a Boolean and you imported java.lang. .... Why?
Edit
Another weird thing.
String Deposit = new String();
String Withdraw = new String();?I Am fairly new to java, I have things "working" to an extent, and i am aware of the naming conventions over the variable names,

Can't add list element when calling a method from another class

I am trying to call a method in another class, which contains code listmodel.addElement("text"); to add an element into a list component made in that class.
I've put in System.out.println("passed"); in the method just to make sure if the method was being called properly and it displays normally.
I can change variables in the other class by calling the method with no problem. The only thing I can't do is get listmodel.addElement("text"); to add a new element in the list component by doing it this way.
I've called that method within it's class and it added the element with no problem. Does Java have limitations about what kind of code it can run from other classes? And if that's the case I'd really like to know just why.

There were no errors, just the element doesnt get added to the list by doing it this way
class showpanel extends JPanel implements ActionListener, MouseMotionListener {
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/*is in a different class file*/
class framepanel extends JPanel implements ActionListener{
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What is isWeak method of DESKeySpec class doing?

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