All methods static?

I have a class and I don't want users to get more than one instance of it in their program. The only way I see to ensure this is by making all the class' methods and variables static. This idea makes my spidey sense tickle as it seems like a bad idea (even though I do not know why). Is it a bad idea? and if so, is there another solution to what I want?

Thanks everyone. It is amazing how much the words "singleton pattern" help in getting Google to give you something that you can actually use. Using a singleton pattern is even less work than making everything static.
You can stop people from instantiating the class by making the constructor
private.Had already done that. :)
Note by the way that all-static classes and singletons (the difference can be
debated), although at times necessary, can produce awful, unmaintainable
code. It largely throws away the object-oriented-ness of the language. Please
proceed with caution.Concerns noted.

Similar Messages

My macbook pro running lion will not boot . it stays on the grey page with the cog spinning. I have tried all methods of booting to no avail. I have removed the bottom and taken out the battery and the ram . will this affect my applecare warranty.

my macbook pro running lion will not boot . it stays on the grey page with the cog spinning. I have tried all methods of booting to no avail. I have removed the bottom and taken out the battery and the ram . will this affect my applecare warranty. I had to try myself as I'm overseas for two months and nowhere near any sort of help .

there was a recent software update that seemed to screw HDV up. Do some searching here over the last month or 2 and you'll find a bunch of posts and some possible solutions.
Worst case scenario, do as Shane suggests. But might I suggest you take a look at the user tips section of the forum. there are some great tips on how to prevent these sorts of problems by cloning your startup drive, etc.

In which case we need a class with all methods defined as abstract ?

In which case we need : A class with all methods defined as abstract (or should we go for Interface always in this case)

The concept of interface and abstract class overlaps sometime, but we can have the following thumb rule to use them for our specific need:
1) Interface: This should be use for code structuring. They standardize your application by providing a specific contract within and outside. If you think abstract class also provide structure, then reconsider as it limits the structure re-usability when there are many super-classes to inherit from. Java allow multiple inheritance by interface and not by Abstract class.
2) Abstract Class: This should be use for code-reusability. Interface doesn't have any code so can't be used for code-reusability.
Actually we can use both to provide the best.Taking a refernce to J2EE framework, the "Servlet" is an interface. It laids down the contract/structure for any code to be a servlet.
But the "GenericServlet" class is an abstract class which provides implementation of some of the methods defined in the "Servlet" interface and leave some method abstract.
Thus we see that the "Servlet" interface standardise the structure and the "GenericServlet" abstract class gives code re-usability.
Original Question:
In which case we need a class with all methods defined as abstract ?To this question, as all methods are abstarct we don't have option for code-reusability. so why not add standard structure concept to your application. So if there is not any restriction on making the field variable(if any) as final, we should go with the interface concept.

Shouldn't all methods pertaining to an object be defined inside that class?

I am trying to understand if I am missing something basic java-wise (I come from other oop environments) or am I facing an ide-style/problem, or maybe I HAVE NO problem.
The way I always had it, was to place all code (functions/procedures/properties) INSIDE the class that it was meant for. But jDev does not do this, and again maybe its Java I'm up against, but then maybe not. Here is a clear example of what I mean. (All SWING.)
On a new jFrame, define a container, and inside the container a jComboBox and a jtextfield. The objective is to ADD ITEMS to the combobox, then upon a trigger event, specifically item_changed (when the user chooses an option from the item list), display a message to the jTextfield. (This differs from the tutorial sample requiring a button.) The purpose of jPanel is to tie the combobox and textfield via delegation. Ultimately we want an extended jPanel that I can (drag and drop) import into any project and drop it onto any jframe.
We have two distinct custom-operations/extensions, 1) is to add_items, and 2) is to talk to another object to display text. First the add_items; ideally I should be able to (if I want to) add_items inside an extended jCombobox and reuse it. Why put the add_items on the jFrame??? jFrame has NOTHING to do here with my little extended-jPanel. I SHOULD be able to choose if to put it into the extended jPanel, as well. (Since this jPanel is built with the purpose of serving a micro-framework for the two objects it contains.)
Similarly with 2, display the text message. I should be able to define the trigger event message to send upon item_change inside the jComboBox class. jPanel would then receive the message via delegation and take care of sending the message to jTextfield, also preferably to an extended jTextfield. But AT THE LEAST, all methods/properties should be within the extended jPanel. (Again, which I want to simply import and reuse.) Why does the ide put this code at the jFrame level? (By the way, if I copy/paste this jPanel, the ide does NOT add the appropriate imports (for the events) to the target jFrame, and neither does it copy the methods that are triggered. This seems like a bug, but I couldn't care less if I can accomplish what I described here.)
Having said all this I am ready (and hoping) for an answer that I am missing something basic in Java.
Thank you all
-Nat

In fact, you don't even need the jbInit() method if you're just using the component as a bean in other components.Cool.
For the component to display properly in the UI editor, it should be a descendent of Component.ok. Does this mean that you can have a component (if not extending jComponent) that does not display properly in the ui editor, and still be properly maintained by the ide? That would be very nice, as long as the ui editor displays a mnemonic/icon instead of that component. I don't [always] NEED the
cutsy picture displayed, but I DO need to know that a component so-and-so is located 'here'.
AS a matter of a fact, I would love to have a pseudo-ui mode in jDev where you can build/maintain a frame with panels and icons representing components, where you can visualize the hierarchy, change the layout via drag-drop of the icons, and drill down. I have a gut feeling that people would use this mode more than the full ui mode we have now. Also, performance wise, jDev would be happier. This view allows one to get a clear wide-angle 'picture' of the layout (and delegation paths) of the classes. Coupled with 'drill down' to allow inserting/maintaining components within others, you have a winner!
Wadda you think? Am I nuts or something?
Come to think of it, it should not be tough for the jDev team to do this, since jDev is already doing something much more complex in the ui_editor. Instead of drawing pictures, when a bean is dropped, simply leave the icon as-is. 9.0.3??<g>
WE developers know that sometimes you can add tremendous functionality (especially from a marketing point of view) to a system, with minimal amount of work.
Sheesh, I forgot what put soapbox mode 'on'. I still would like to know how jDev would currently treat a bean that is not a sub-classed jComponent.
Thanks
-Nat

If all methods are virtual, what's up with this?

I've got two class
Class A {
public void foo() {
System.out.println("As foo");
public void bar() {
foo();
Class B extends A{
public void foo() {
System.out.println("Bs foo");
Then in my main method
B myB = new B();
myB.foo();
the output is "As foo". Should it not be "Bs foo"? How can I make it execute Bs foo, without giving B it's own bar() method?

Ok, problem solved. My foo() type methods were
actually private. I made them protected and all is
well.And that answers your question as well. Not all methods are virtual.

The iTune cannot detect my iPhone. I have already tried all methods suggested, including re-installling iTune, re-activating Apple Mobile Device, plugging in various USB ports, and etc. I use windows 7. How can I solve this?

The iTune cannot detect my iPhone 4S. I have already tried all methods suggested, including re-installling iTune, re-activating Apple Mobile Device, plugging in various USB ports, and etc. I use windows 7. How can I solve this?

The new cable is completely new, and my computer can detect the phone as a drive, and battery charging is ok. So I believe the USB cable works properly. It is so weird that just iTune itself cannot detect the phone, and it is of the most updated version. What else can I do? Thanks.

Execute all methods in a callass (use reflection?)

Hi there,
I�m trying to create a method that calls all methods in the class (except itself and the constructors). All methods returns an element and this element should be added to a linked list.
I wonder if there is such possibility to do that (I know that JUnit suite does something similar where you don�t have to specify all tests and it is generated for you)
I tried something with reflection (like the code below) but that obviously it didn�t work out.
Any idea?
     public LinkedList getElements()
          Method m[] = MyClass.class.getDeclaredMethods();
          for (int i = 0; i < m.length; i++)
               elementList.add(m.toString());
          return this.elementList;

all methods returns an Element. I want to avoid typing somthing like:
public LinkedList()
linkedList.add(getConstantValue());
linkedList.add(getPetroName());
linkedList.add(getFileReferenceNumber());
// instead I wish to have somthign like:
//for loop on all methods
// linkedList(exec method 1..2..3..4.)
     public Element getConstantValue()
          return new Element ("ffsd", "CONS", 3,42, line);
     public Element getPetroName()
          return new Element ("ffzx", "PXNM", 49,45, line);
     public Element getFileReferenceNumber()
          return new Element ("aawr", "CSTF", 27,94, line);
     public Element getIdentification()
          return new Element ("ttre", "CLID", 8,121, line);
     }

How to calculate the sum of cyclomatic complexity of all methods?

I can write a rule to calculate the sum of cyclomatic complexity of all methods in my system?

Hi Dileep,
In your query you are not specified whether the SUM of entire internal table SALARY or break up SALARY.
If you want just the SUM of the entire internal table SALARY.
Try this code.
begin of itab occurs 0,
name(10),
salary type i,
end of itab.
itab-name = 'ABC'. itab-salary = 25000.
append itab.
itab-name = 'CDF'. itab-salary = 50000.
append itab.
itab-name = 'FGH'. itab-salary = 30000.
append itab.
itab-name = 'LMN'. itab-salary = 35000.
append itab.
itab-name = 'QPR'. itab-salary = 40000.
append itab.
loop at itab.
at last.                " Note the control statement used here
    sum.
    write: 'The total salary is',itab-salary.
endat.
endloop.
Regards,
Smart

I am trying to remove the Yahoo search from my list of search engines. Have tried all methods that I found, yet it's still there. Any thoughts?

Trying to replace Yahoo from FF 7. Have tried all methods that I could find Including these:
[http://www.firefoxfacts.com/2008/01/13/change-default-search-in-firefox/ Settings] [http://clipmarks.com/clipmark/81CEAB7F-649B-4505-BDE0-C0CEE47FAA6D/ Search]

The only way to remove those is to restore the phone as a new device. It has to do with the Spotlight cache on the phone. There is no other way that I am aware of to clear that cache.

Print out all methods in program with print statements

Does anyone know how I would be able to print out all the methods in a program. For example:
class bd220p1 {
     public static void main(String args[]) {
          int lightspeedi,lightspeedm;
          long days;
          long seconds;
          long distancei;
          long distancem;
          // approximate speed of light in miles per second
          lightspeedi = 186000;
            // approximate speed of light in Kilometers per second
          lightspeedm = 300000;
          days = 1000; // specify number of days here
          seconds = days * 24 * 60 * 60; // convert to seconds
          distancem = lightspeedm * seconds; // compute distance in English system
          distancei = lightspeedi * seconds;// compute distance in Metric system
          System.out.print("In " + days);
          System.out.print(" days light will travel about ");
          System.out.println(distancei + " miles and");
          System.out.print(distancem + " Kilometers ");
}This code would produce 5 print statements for the 4 methods:
1 Main method
2 Print method
3 Print method
4 Println method
5 Print method
Does anyone know I can write the could to accomplish this? Right now I am experimenting with try/catch statements. Any help is greatly appreciated.

It seems to me the easiest approaches (other than using a tool someone else has already written) are:
1) Compile the source, and then use BCEL
2) Try some regular expressions; it won't be perfect but maybe you can tweak it until it's good enough.
3) Parse the source, and examine the parse tree.
1 and 3 will give you much better results, but require you to use outside libraries (or write a parser yourself).
You can do 2 using standard stuff from the JDK, but you may spend a lot of trial-and-error gettng the regexps right.
Which you choose will depend a lot on what the prof giving the assignment allows.
Also he may have some particular kind of solution in mind -- did he say anything?
If you're not sure what to do, ask your prof for clarification.

JLabel won't display image until all methods have completed

Hi,
I?m trying to deal playing cards. I can click a button to deal one card at a time
but I?m trying to set it up so it runs 25 cards with a delay on each card.
Otherwise, it just puts up 25 cards at the same time.
I?ve been reading about threads and swing delays but the same thing happens.
It runs the methods and displays it all in one shot.
Below is code for displaying one card. It works fine
private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {
ic[icCount] = new ImageIcon(Deck.cardMatrix[matRow][matCol]);
if(icCount ==1 ) jLabel1.setIcon((Icon) ic[icCount]);
if(icCount ==2 ) jLabel2.setIcon((Icon) ic[icCount]);
if(icCount ==3 ) jLabel3.setIcon((Icon) ic[icCount]);
if(icCount ==4 ) jLabel4.setIcon((Icon) ic[icCount]);
if(icCount ==5 ) jLabel5.setIcon((Icon) ic[icCount]);
if(icCount ==6 ) jLabel6.setIcon((Icon) ic[icCount]);
if(icCount ==7 ) jLabel7.setIcon((Icon) ic[icCount]);
if(icCount ==8 ) jLabel8.setIcon((Icon) ic[icCount]);
if(icCount ==9 ) jLabel9.setIcon((Icon) ic[icCount]);
if(icCount ==10)jLabel10.setIcon((Icon) ic[icCount]);
if(icCount ==11)jLabel11.setIcon((Icon) ic[icCount]);
if(icCount ==12)jLabel12.setIcon((Icon) ic[icCount]);
if(icCount ==13)jLabel13.setIcon((Icon) ic[icCount]);
if(icCount ==14)jLabel14.setIcon((Icon) ic[icCount]);
if(icCount ==15)jLabel15.setIcon((Icon) ic[icCount]);
if(icCount ==16)jLabel16.setIcon((Icon) ic[icCount]);
if(icCount ==17)jLabel17.setIcon((Icon) ic[icCount]);
if(icCount ==18)jLabel18.setIcon((Icon) ic[icCount]);
if(icCount ==19)jLabel19.setIcon((Icon) ic[icCount]);
if(icCount ==20)jLabel20.setIcon((Icon) ic[icCount]);
if(icCount ==21)jLabel21.setIcon((Icon) ic[icCount]);
if(icCount ==22)jLabel22.setIcon((Icon) ic[icCount]);
if(icCount ==23)jLabel23.setIcon((Icon) ic[icCount]);
if(icCount ==24)jLabel24.setIcon((Icon) ic[icCount]);
if(icCount ==25)jLabel25.setIcon((Icon) ic[icCount]);
System.out.printf("matDealCount, matcol,matrox, icCount "+" " + matDealCount+" "+matCol+" "+matRow+" "+icCount);
    icCount++;
    if(matDealCount==84){
        icCount=1;
        matRow =0;
        matCol=0;
    matDealCount++;
    if(icCount >25)icCount=1;
    if(matCol <= 14) {
       matCol++;
    if(matCol == 15) {
       matCol = 1;
       matRow++;
       if(matRow ==5 && matRow ==14){
          matRow=0;
          matCol=1;
          matDealCount =1;
          testCardMatrix =1;
    System.out.printf("%n icCount= "+icCount);
}   Here is the problem code:
It performs all these functions and I see nothing until it?s
over and then I see it all in one shot.
Button11 starts a for loop
startshowMatrix
- showMatrix --displays one card
- Deck.delayMilli(500);
return to button 11 for another loop
Right now the for Loop shows me 3 cards at a time.
I had the for loop around the startshowMatrix method. No success.
What I want is showMatrix to display a card in a jLabel, delay, and display the next one.
Simple? I ?m sure it is?lol
private void jButton11ActionPerformed(java.awt.event.ActionEvent evt) {
    System.out.printf("in button 11");
    for(int i=1; i<4; i++){
     startshowMatrix();
public void startshowMatrix(){
    showMatrix();
    Deck.delayMilli(500);
public void showMatrix(){
ic[icCount] = new ImageIcon(Deck.cardMatrix[matRow][matCol]);
if(icCount ==1 ) jLabel1.setIcon((Icon) ic[icCount]);
if(icCount ==2 ) jLabel2.setIcon((Icon) ic[icCount]);
if(icCount ==3 ) jLabel3.setIcon((Icon) ic[icCount]);
if(icCount ==4 ) jLabel4.setIcon((Icon) ic[icCount]);
if(icCount ==5 ) jLabel5.setIcon((Icon) ic[icCount]);
if(icCount ==6 ) jLabel6.setIcon((Icon) ic[icCount]);
if(icCount ==7 ) jLabel7.setIcon((Icon) ic[icCount]);
if(icCount ==8 ) jLabel8.setIcon((Icon) ic[icCount]);
if(icCount ==9 ) jLabel9.setIcon((Icon) ic[icCount]);
if(icCount ==10)jLabel10.setIcon((Icon) ic[icCount]);
if(icCount ==11)jLabel11.setIcon((Icon) ic[icCount]);
if(icCount ==12)jLabel12.setIcon((Icon) ic[icCount]);
if(icCount ==13)jLabel13.setIcon((Icon) ic[icCount]);
if(icCount ==14)jLabel14.setIcon((Icon) ic[icCount]);
if(icCount ==15)jLabel15.setIcon((Icon) ic[icCount]);
if(icCount ==16)jLabel16.setIcon((Icon) ic[icCount]);
if(icCount ==17)jLabel17.setIcon((Icon) ic[icCount]);
if(icCount ==18)jLabel18.setIcon((Icon) ic[icCount]);
if(icCount ==19)jLabel19.setIcon((Icon) ic[icCount]);
if(icCount ==20)jLabel20.setIcon((Icon) ic[icCount]);
if(icCount ==21)jLabel21.setIcon((Icon) ic[icCount]);
if(icCount ==22)jLabel22.setIcon((Icon) ic[icCount]);
if(icCount ==23)jLabel23.setIcon((Icon) ic[icCount]);
if(icCount ==24)jLabel24.setIcon((Icon) ic[icCount]);
if(icCount ==25)jLabel25.setIcon((Icon) ic[icCount]);
System.out.printf("matdealcount, matcol,matrox, icCount "+" " + matDealCount+" "+matCol+" "+matRow+" "+icCount);
    icCount++;
    if(matDealCount==84){
        icCount=1;
        matRow =0;
        matCol=0;
    matDealCount++;
    if(icCount >25)icCount=1;
    if(matCol <= 14) {
       matCol++;
    if(matCol == 15) {
       matCol = 1;
       matRow++;
       if(matRow ==5 && matRow ==14){
          matRow=0;
          matCol=1;
          matDealCount =1;
          testCardMatrix =1;
         // cardNumber=1;
System.out.printf("%n icCount= "+icCount);
     public static void delayMilli(long ms)
//System.out.printf("%n indelay");
Date d = new Date();
Date e;
long cTime = d.getTime();
long tTime;
//System.out.printf("%n indelay");
do
{e = new Date();
tTime = e.getTime();
}while(tTime - cTime <= ms);
System.out.printf("%n in delay before return");
return;
}      JavaLuck

JavaLuck wrote:
Read the tutorial. blah blah blah.
But I understand what I'm dealing with.
JavaLuck also wrote:
Threads are turning into my brain into jellyMake up your mind. And don't just read the tutorial, do the exercises. That's what they're there for.
Your problem is about displaying labels one by one in a delayed fashion, yet you repeatedly post 25 lines of setIcon code which has nothing whatsoever to do with the problem and is also ugly: you should be using an array of JLabel and setting the icons in a loop.
The class javax.swing.Timer hides the threading details from you and the actionListener method of its assigned Action, as all event code, runs on the EDT.import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.border.LineBorder;
public class DelayedLabels {
   private JPanel panel;
   private Timer timer;
   void makeUI() {
      panel = new JPanel(new GridLayout(0, 5, 5, 5));
      timer = new Timer(500, new AbstractAction() {
         private int counter;
         @Override
         public void actionPerformed(ActionEvent e) {
            counter++;
            JLabel label = new JLabel(" Card " + counter);
            label.setBorder(new LineBorder(Color.RED));
            label.setPreferredSize(new Dimension(50, 50));
            panel.add(label);
            panel.revalidate();
            panel.repaint();
            if (counter == 25) {
               timer.stop();
      JFrame frame = new JFrame("Delayed Labels");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setSize(400, 400);
      frame.setLayout(new FlowLayout());
      frame.setLocationRelativeTo(null);
      frame.add(panel);
      frame.setVisible(true);
      timer.start();
   public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
         @Override
         public void run() {
            new DelayedLabels().makeUI();
}db

Why are all methods virtual???

class Base
     public Base()
          System.out.println("Calling f() from base class ...");
          f();
          return;
     public void f()
          System.out.println("Base class function called!");
          return;
class Derived extends Base
     public Derived()
          System.out.println("Calling f() from derived class ...");
          f();
          return;
     public void f()
          System.out.println("Derived class function called!");
          return;
     public static void main(String args[])
          new Derived();
          return;
}The problem in this: the call to f() from the Base class calls the Derived class method. I want it to call the Base class method. How do I do this?
Ravi

Sorry, I cant explain the circumstances under which I
encountered this problem without explaining a whole
lot about my product. But I cant make it a private
method because I need to be able to call it from
outside the package. I found a workaround for my
problem by putting a call to super.f() in the derived
class. But I really wonder why the makers of Java
chose to make it this way!
RaviIf you can't explain your problem then don't post your questions here. It's not like a small post on a forum board will cause your IP any damage.
The design of OOP is that if you override a method in a subclass of an object, the reason for doing so is that you are add/changing functionality of that method. If you don't need to add/change functionality of a method then don't override it. Polymorphism ensures that no matter what type of object the compiler thinks you are reffering to, at runtime you will call the correct method of the type of object you encounter then. This is why interfaces work. calling the super class to complete processing of a method is not a hack, or a design problem it's the way to do it. If the class that you are extending changes private data structures in a method, and you override that method, unless you are doing a radical change to the class, you probably need to call the super method to ensure that the proper changes are made.

Javadoc @throws clause at a class level for all methods

hello
If all my class's methods throw the same RuntimeException for the same reasons, is there a way to put a @throws clause at class level?
I mean, I don't want to duplicate my comments for each of the methods I have. Say I want to add extra information... It would be a pain to copy paste same
comment for all the methods.
Thx in advance, any help welcomed :)

kux wrote:
hello again
first of all, love your replay :). Nice to see people with good sense of humor :D
Ok, I made the story shorter. Of course I don't throw a raw RuntimeException. What I have is a subclass of RuntimeException. Basicly all my methods use a sql Connection and do a certain querry on a database. What I do is that I don't let checked SQLException propagate through my methods because the clients of the persistance layer should not be required to handle the low level sql exeptions.Correct!
Instead I catch them and rethrow them as DAOExceptions that SUBCLASS RuntimeException. Unusual... but... Hmmm... I can't say that's actually "bad practice", per se, but DAOException is traditionally a checked exception type thrown only from the very top of the DAO specifically so that clients must catch (or explicitly throw) it... Hmmm..
Basicly I used sun's DAO pattern: http://java.sun.com/blueprints/patterns/DAO.html.
That's be The GOF's pattern... but yeah, good choice.
I made the question shorter because this is not the point. The question was about javadoc, not my programming practices :)But, but, but...
Ok... Ah... Ok.... Ummm, No. At least Not That I Know Of... BUT, what you can do is summarise your exception handling strategy once in the class summary section, and just reference it in each throws clause... you can stick intra-page links in java doc (I've seen them, just not sure how they're done, I think the syntax is something like {@link:anchor}... but that's just something I once saw somewhere... not gospel.
Also, if a method has throws DAOExceptions for an "odd" reason (like invalid data retrieved successfuly from the database (yes, it happens)) then you can still document that case in the method.
If your exception handling is really worth talking about then an external article referenced in the class summary. We use a wiki (http://en.wikipedia.org/wiki/DokuWiki) for such purposes, and many others including research schedules and papers, and (increasingly) design doco, even though that's outside the "official process" we find the wiki so much more convenient (i.e. searchable), especially since it's become possible to convert (simple) word-doc's straigth to wiki markup.
But, but, but... Programming practices are so much more interesting than documentation... who ever complained about in the documentation (besides me I mean).
Cheers mate. Keith.

How to execute a 'Find' in all Methods of a component

Hi,
I have a really basic question about the usability of Web Dynpro.
Is there any kind of <b>Search function</b>, as the binocular icon provide in the Class Builder or Function Builder. This is an absolute requirement in any Development tool. I just want to search for a string in al methods of all Views of my Web Dynpro Component without having to open every single View and Method manually.
Thanks
Davy

It's a problem and this is one of the reason to make use of assistant class.
Have a look to an old but interesting post:
Re: WDA Best Practice for Coding
Sergio

All methods to read xmp metadata are not listed and described in documentation

hi
i have checked xapdumper example. it uses many methods which are not listed in documentation.
also it is not able to read metadata from pdf files.
can anyone tell me that what should i do to read metadata.
i-e a brief explanation of steps i should follow to read metadata from a pdf file.
thanks

I have found that the XMP data of an InDesign document can be retrieved in actionscript as follows:
InDesign.app.activeDocument.metadataPreferences
This returns the MetadataPreference object.
But I am not able to iterate each namespace in the xmp. There isn't any XMPFile class which allows me to serialize the object to xml file so that I can iterate all elements in the XMP.
I could not relate class like XMPMeta, XMPProp, etc. with the MetaDataPreference class. So, how to obtain the entire xmp packet from the MetadataPreference object?
Can anyone shed light on this?

All methods static?

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