Changing access modifier in sublasses

What does JLS tell us about overriding member modifiers? Say, adding a volatile modifier or making a final fiald public instead of protected?
Thanks.

OK, what about other modifiers, volatile? Does volatile impose any penalty when used from single thread?

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Cannot change access modifiers when overriding 'protected' inherited member 'Windows.UI.Xaml.FrameworkElement.OnApplyTemplate() Error In Wp8.1 Universal Apps

This Code is Working in WP8.0 but in WP8.1 Universal Apps i got this error.
public override void OnApplyTemplate()
base.OnApplyTemplate();
//Some Statements

Hi Chinni987,
The error message seems quite clear, you have duplicate name definition for MyclassName, you may need to check it.
There also a possibility that something wrong with XAML, sometimes it looks like the environment issue instead of the code issue, try to rebuild your XAML and clean the project, rebuild again to see if helps.
--James
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This database was connected to a Microsoft Access Services site that is not compatible with this version of Microsof Access. You cannot make design changes or modify data in database.

Hello All,
I am getting this error while I am connecting my access database website for the change
"This database was connected to a Microsoft Access Services site that is not compatible with this version of Microsof Access. You cannot make design changes or modify data in database."
I am using SharePoint 2010 and Microsoft Office 2010.
I have created one Contact Database Site and now I am trying to modify the layout of the form in Access. and I am getting the error that I have mentioned.
Please provide help on it.
Thanks in Advance....

Hello All,
I got the answer, we have to enable the port 80 or where the access service is deployed and we have to change Trust setting and also, enable the macro from Access.
Hope this will help to other....

Default/package/none access modifier

Hi,
I was hoping for some discussion on the default/package/none access modifier. It's always really bugged me that we have public, private, protected, and then "none", while it seems to me that it would be less confusing, and more consistent to use the keyword "package", or maybe even "default".
Then, source code would look like
public class MyClass{
    public int getValue() {}
    private void setValue() {}
    protected void someMethod() {}
    package int justForPackage() {}
}I know this concept has come up before, but the books I've read which mention this topic haven't offered any actaul justification/explanation for why there isn't some keyword.
Anyway, are there any insights as to why java is this way, and any reasons why java should or shouldn't be changed to include the package access modifier.

A good example is within a tightly grouped package (usually should be this way) you may have some cooperative classes that access methods.
// one .java file
public class SomeHelper {
   private void method() {
     new ClassForUsers().accessHiddenLogic();
// next .java file in same package
public ClassForUsers {
    /* default-access */ void accessHiddenLogic() {
}But, you may want to allow users to subclass your ClassForUsers, without giving them access to the hidden logic method directly:
// another .java file in a different package
public class UsersSubclass extends ClassForUsers {
    public void userMethod() {
        // can't do this
        accessHiddenLogic();
}This could be for either business logic or security reasons. So, package level access can be very useful. However, I've seen that in practice it is avoided because it isn't obvious what is going on.

Access modifiers ignored !?!

Hi
please, have a look at the code below and let me know your opinions
// ------------- source file 1 ------------------------
package pckg1;
public class Dog {
     final public static void main (String[] args) {
          pckg2.Puppy puppy = new pckg2.Puppy("Spot");
          System.out.println(puppy.getName());
// ------------- source file 2 --------------------
package pckg2;
class Puppy {
     String name;
     public Puppy(String name) {
          this.name = name;
     String getName() {return name;}
Each class belongs to a different package. Obviously if you compile Puppy first and attempt compiling Dog the compiler will complain about several things (class Puppy not being public, method getName() not being public, etc...).
Now,
if you change the Puppy class so that the necessary bits are public, re-compile Puppy and then Dog it will work.
When you subsequently go back to Puppy and remove the added public access modifiers and re-compile JUST the Puppy class and try running Dog IT WILL STILL WORK AS IF EVERYTHING IN THE PUPPY CLASS WERE PUBLIC.
I don't thing this is right. If the access modifiers cannot be relied on then the whole system is flawed.
PS: Running on W2K, the behaviour observed on JRE 1.2.2_007, 1.3.0_02 as well as on 1.4.0-beta-b65.
Cheers
Ales Krestan

Thanks for the response, but I hold different views on the matter. Although performance surely is of a great importance, it should not come at the expense of consistency.
A few more thoughts on the same:
1/ my understanding is that it is responsibility of the class loader to decide what to do in such cases during the resolution case. Apparently the application class loader of SUN's JVM ignores it and so does the extension class loader of the same JVM.
2/ surprisingly (or rather expectedly) when attempting to load both classes (with the dodged version of Puppy) using the system class loader the JVM throws java.lang.IllegalAccessError.
3) the same trick cannot be done with an interface. If you try to dodge an interface using the same principle and try to load it using the application class loader JVM will refuse to run (or load) the class that uses the dodged interface.
4/ the class loader DOES other things, so why not to check the access modifiers as well. It should check if the class can be instantiated, for example. See the section 2.17.3 Linking: Verification, Preparation, and Resolution of the JVM specification.

Old access modifiers persisting after recompile

Hello,
I was following the Sun Tutorials for beginners and got to the exercise about developing Card and Deck classes (http://java.sun.com/docs/books/tutorial/java/javaOO/QandE/creating-answers.html). To see if I understood the concepts about access modifiers I tried tinkering with the supplied answers, Card.java and DisplayDeck.java.
I did the following:
1) In Card.java, changed the class constant, DIAMONDS to private.
2) Recompiled Card.java.
3) Ran DisplayDeck, which uses Card.DIAMONDS.
I did not get a run-time error. I don't understand why. Doesn't DisplayDeck.class use the latest Card.class file? Apparently not. I tried restarting my DOS session and running again. Still no error. Does DisplayDeck.class somehow keep its own version of the Card class until you recompile DisplayDeck?
4) Then I recompiled DisplayDeck and got a compile error. This I understand.
Thanks.
John

Ontological wrote:
Thanks. Is the Bytecode the .class file? Are you saying that when you compile class B, which uses class A, that all constants from class A are stored in the Bytecode for class B?One way to work around this is to use a static initializer. This way the values are not determined at compile time, so they can't be put into dependent classes. I don't really care for this though. I'd just rather recompile everything.
public class Constants {
public static final int X;
public static final int Y;
static {
X = 123;
Y = 456;
}

How to restrict the change access in CRM for OLTP orders

Hi Guru's,
Please let me know how to restrict the change access in CRM for the orders that are created in ECC. The ECC orders will only for display in CRM but not for change,
We have the orders that are created in ECC, it will flows to CRM and should restrict the access to get in to the change mode in CRM but as of now CRM system is allowing change mode for ECC orders and ending up with errors.
Is there any additional middleware parameter that needs to be added to SMOFPARSFA table to get this functionality! Please advice! Thank your for your help.
Regards
Suneel

Hi.
You can use the PFCG role to control if the user is able to create, change, delete or only display a business transaction type.
Regards.

Name of track changes to modified date when importing mp4

I have two .mp4 files: (both names listed below are the filenames)
Valentines Day Torin.mp4 with a modified filed date of 02/15/2010
Phoebe Confirmation Entrance.mp4 with a modified date of 03/18/2010
When I import the Valentines Day Torin file, the filename stays the same. The "Name" field is also the filename. This is what I want.
When I import the Phoebe Confirmation Entrance, the filename stays the same. The "Name" field is changed to "Mar 18, 2010 3:52pm".
Anyone know why?
Also, does anyone know how to get iTunes to stop changing the modified date on files when you change any info in the "Get Info" area.
I find it quite hard to import a lot of home videos into Itunes. File name length limitations, changing of modified dates, just can't figure this out..
I have all my videos in order according to the modified date since titles can't be more than 36 characters, but can't figure out an easy way to sort chronologically.
Thanks,
Derek

Check the file withEXIF Viewer or Reveal to see what the EXIF Capture Date is. iPhoto uses that for photos from digital cameras.
OT

Is there api function to change access mode and set a passcode to recording in meeting?

Is there api function to change access mode and set a passcode to recording in meeting?
When I'm trying to use "action=acl-field-update&acl-id=SCO_ID_RECORDING&field-id=meeting-passcode&value=MY_PASSC ODE" it just clean the password and do not set it or change.
And "action=permissions-update&acl-id=SCO_ID_RECORDING&principal-id=public-access&permission- id=view-hidden" do not work too.

There is not a specific API for doing this. This was discussed in the other Connect forum here, Adobe Connect User Community.
For you call I would make the second part differently. Instead of 'field-id=meeting-passcode&value=MY_PASSCODE' I would call 'meeting-passcode=MY_PASSCODE' and see if that worked better.

Limit change access to all useres exept the one that created the document

Hi,
I wonder if it's possible to limit the change access only to the user that has created the document when it's in a specific status.
This is what the customer wants:
When a document is set to status K the document should be locked and no other users should be able to create a new version.
There should be a admin group that can create new versions and change the document. - This is solved
Best regards Kristoffer

Hi Krip,
generally I would recommend you to maintain one status of type 'O' for a document type in your system. This kind of status will allow a second user to display an already checked out original. If user A checks out the original and there is such a status maintained for this document type the system will change the status automatically to this status of type 'O'. Then a second user is able to display the last checked in version of this original in CV03N too. Without such status type the second user is not able to display the checked out file. This was implemented to avoid that two users may be able to change the same original at the same time. I hope this information could be useful for you.
Best regards,
Christoph

Java class access modifiers

Why java class cannot have private and protected access modifiers?

class X {
private class y {}
}should compile just fine. A top-level private class makes no sense because you wouldn't be able to see it. As for protected, I don't know.

How to change access point name

Need to know how to change access point name for straight talk on iPhone 4

There are several other threads here about doing this, or you can look up the "sim swap" method, documented here: http://www.jgmedia.biz/how-to-get-data-and-mms-working-on-straight-talk-iphone-4 -and-iphone-4s-on-ios-6-updated-sim-swap-method/. This does require temporary access to a T-Mobile or Simple Mobile SIM/Micro-SIM card.

Default class access modifier

What is the default access modifier for a class? I can't seem to find it in the tutorials...
Thanks
Jim

The default access is the same for top level classes that do not specify access explicitly as for other identifiers. Package.
This single source file will create two class files in the same package. Only other classes in the package can see these top level package access classes.
And, yes, this is a bad idea. In the case of some build tools, errors in a compile can cause the public class to compile, but the package class to fail. After that, the compiler will not be able to determine what source file to compile for the package level class. This is an error that confuses many developers. I do not recommend this practice. Put each top level class in its own source file.
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Access modifier for Constructors ???

As constructors are not the so called Members of a class
(Class's Member declarations include only 4 things : variables , methods, member classes and member interfaces)
Why do we have access modifiers for constructors also ??
I know that if a class A 's constructor is declared 'private' , then that class cannot be instantiated outside the class A. .That is, class A can be instantiated only inside class A and provide this newly created reference to the outside world through public getter method.
I dont understand how the other access modifiers (protected and default ) apply to a constructor.
Any help from ur side is greatly appreciated !!!!!

Why do we have access modifiers for constructors also
??To prevent anyone from accessing them if they shouldn't.
I know that if a class A 's constructor is declared
'private' , then that class cannot be instantiated
outside the class A. Or you use another c'tor. Or a static getInstance() method provided by A. You you simply shouldn't create an instance yourself anyway.
That is, class A can be
instantiated only inside class A and provide this
newly created reference to the outside world through
public getter method.Yepp.
I dont understand how the other access modifiers
(protected and default ) apply to a constructor. Same as at other places. No difference.

Use of public access modifier in main method

I want to know what is the significance of public access modifier with main (String args[]) method. Like generally we write
public static void main(String args[])
But if we write
private static void main(String args[])
OR
protected static void main(String args[])
then also its working properly.............
then what is the use of public keyword..........................
Regards
Ajay Pratap Singh

then what is the use of public keyword..........................Convention, I believe. And I think newer versions of the JVM require it.
P.S. Relax a bit on the punctuation overuse. Many folks around here find that a bit irritating, and you probably don't intend to send that kind of a message. Cheers!

Changing access modifier in sublasses

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