Object Inheritance problem between projects

Hi,
I have two projects lets say project1 and project2. From project1 I instanciate processes of project2 as subflows. In addition I have one bpm object in project1 (lets say object1) that inherits from a bpm object in proyect2 (lets say object2). So project1 depends on project2 to make this inheritance happen. When I call the subflow I pass the object1 and as inherits from object2 there is no problem (input argument). For the output argument I have to cast from object2 to object1. And here is where I have a classcastexception. If all the processes are in the same project it works fine and there is no exception. But when splitting in two projects it fails. Seems that it is something related to the folder structure in the catalog that should be the same for both projects and that is the reason why it does not work, but as one project depends to the other I can not put the same folder structure in both catalogs because in the dependant project it is duplicated.
Has anybody can give me an idea on how to solve this?
Thank you very much in advance
Kind regards

Nobody can help me with this issue?,any help is much appreciated, the excpetion I get is:
An operation exception occurred while running an automatic item. Details: An instance in Process '/Prueba#Default-1.0' could not be notified. Caused by: Process execution engine execution error. Caused by: The method 'CIL_otherProjectOtherProjectIn' from class 'Novartis.Prueba.Default_1_0.Instance' could not be successfully executed. Caused by: Cannot convert an object with type xobject.BaseModule.BaseObject to class xobject.DependantModule.DependantObject fuego.papi.exception.CannotStoreNotificationException: An instance in Process '/Prueba#Default-1.0' could not be notified. at fuego.server.AbstractProcessBean.receiveNotification(AbstractProcessBean.java:2791) at fuego.server.iec.LocalIPCHandler.sendNotification(LocalIPCHandler.java:79) at fuego.server.execution.microactivity.DefaultSendNotificationExecutionHandler.sendNotification(DefaultSendNotificationExecutionHandler.java:103) at fuego.server.execution.microactivity.EndMicroActivity.execute(EndMicroActivity.java:69) at fuego.server.execution.microactivity.MicroActivityEngineExecutionHandler.executeActivity(MicroActivityEngineExecutionHandler.java:57) at fuego.server.execution.ImmediateActivity.execute(ImmediateActivity.java:42) at fuego.server.execution.DefaultEngineExecution$AtomicExecutionTA.runTransaction(DefaultEngineExecution.java:304) at fuego.transaction.TransactionAction.startBaseTransaction(TransactionAction.java:470) at fuego.transaction.TransactionAction.startTransaction(TransactionAction.java:551) at fuego.transaction.TransactionAction.start(TransactionAction.java:212) at fuego.server.execution.DefaultEngineExecution.executeImmediate(DefaultEngineExecution.java:123) at fuego.server.execution.DefaultEngineExecution.executeAutomaticWork(DefaultEngineExecution.java:62) at fuego.server.execution.EngineExecution.executeAutomaticWork(EngineExecution.java:42) at fuego.server.execution.ToDoItem.executeAutomaticWork(ToDoItem.java:251) at fuego.server.execution.ToDoItem.run(ToDoItem.java:536) at fuego.component.ExecutionThread.processMessage(ExecutionThread.java:775) at fuego.component.ExecutionThread.processBatch(ExecutionThread.java:755) at fuego.component.ExecutionThread.doProcessBatch(ExecutionThread.java:142) at fuego.component.ExecutionThread.doProcessBatch(ExecutionThread.java:134) at fuego.fengine.ToDoQueueThread$PrincipalWrapper.processBatch(ToDoQueueThread.java:450) at fuego.component.ExecutionThread.work(ExecutionThread.java:839) at fuego.component.ExecutionThread.run(ExecutionThread.java:408) Caused by: fuego.papi.impl.EngineExecutionException: Process execution engine execution error. at fuego.server.execution.DefaultEngineExecution.executeWithoutComponentImmediate(DefaultEngineExecution.java:202) at fuego.server.execution.EngineExecution.executeWithoutComponentImmediate(EngineExecution.java:95) at fuego.server.AbstractProcessBean.receiveNotification(AbstractProcessBean.java:2757) ... 21 more Caused by: fuego.lang.ComponentExecutionException: The method 'CIL_otherProjectOtherProjectIn' from class 'Novartis.Prueba.Default_1_0.Instance' could not be successfully executed. at fuego.component.ExecutionThreadContext.invokeMethod(ExecutionThreadContext.java:519) at fuego.component.ExecutionThreadContext.invokeMethod(ExecutionThreadContext.java:273) at fuego.fengine.FEEngineExecutionContext.invokeMethodAsCil(FEEngineExecutionContext.java:219) at fuego.server.execution.EngineExecutionContext.runCil(EngineExecutionContext.java:1277) at fuego.server.execution.microactivity.ComponentExecutionMicroActivity.runCil(ComponentExecutionMicroActivity.java:126) at fuego.server.execution.microactivity.ComponentExecutionMicroActivity.execute(ComponentExecutionMicroActivity.java:84) at fuego.server.execution.microactivity.MicroActivityEngineExecutionHandler.executeActivity(MicroActivityEngineExecutionHandler.java:57) at fuego.server.execution.ImmediateActivity.execute(ImmediateActivity.java:42) at fuego.server.execution.DefaultEngineExecution$AtomicExecutionTA.runTransaction(DefaultEngineExecution.java:304) at fuego.transaction.TransactionAction.startNestedTransaction(TransactionAction.java:527) at fuego.transaction.TransactionAction.startTransaction(TransactionAction.java:548) at fuego.transaction.TransactionAction.start(TransactionAction.java:212) at fuego.server.execution.DefaultEngineExecution.executeImmediate(DefaultEngineExecution.java:123) at fuego.server.execution.DefaultEngineExecution.executeWithoutComponentImmediate(DefaultEngineExecution.java:199) ... 23 more Caused by: java.lang.ClassCastException: Cannot convert an object with type xobject.BaseModule.BaseObject to class xobject.DependantModule.DependantObject at fuego.util.Conversion.cast(Conversion.java:99) at Novartis.Prueba.Default_1_0.Instance.CIL_otherProjectOtherProjectIn(Instance.xcdl:1) at Novartis.Prueba.Default_1_0.Instance.CIL_otherProjectOtherProjectIn(Instance.xcdl) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at fuego.component.ExecutionThreadContext.invokeMethod(ExecutionThreadContext.java:512) ... 36 more
The strange thing is that if all the processes are in the same project everything works fine but once I split in two projects it raises the exception.
Thank you very much

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import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
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     static final String RIGHT= "Right";
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                         catch (Exception e) {
                              e.printStackTrace();
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               panel.add(green);
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                         mBalls.remove(ball);
                         fireLeft(ball);
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               while (right.hasNext()) {
                    Ball ball= (Ball) right.next();
                    ball.x += delta;
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                         right.remove();
                         mBalls.remove(ball);
                         fireRight(ball);
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               mBalls.add(ball);
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                         gui.right(ball);
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                    public void right(Ball ball) {
                         gui.left(ball);
               Thread thread= new Thread() {
                    public void run() {
                         while (true) {
                              try { sleep(100); }
                              catch (InterruptedException e) { }
                              gui.move(10);
               thread.setDaemon(true);
               thread.start();
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          throws Exception
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               barf();
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          int rightPort= -1;
          String leftHost= "localhost";
          String rightHost= "localhost";
          int serverPort= Integer.parseInt(argv[0]);
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                         barf();
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                    if (url.indexOf(":") < 0)
                         barf();
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                         barf();
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                    if (url.indexOf(":") < 0)
                         barf();
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               rightPort > 0 ? new Client(rightHost, rightPort, RIGHT) : null);
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          System.err.println(USAGE);
          System.exit(-1);

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Thank you for the advice.
I tried your method but there definitely seems to be a fault or glitch in my software. If I highlight a number of connected clips and audio tracks the program will not copy and paste them into the newly created compound clip in my event library.
I therefore decided to do it the slow ay and copy each individual item. This worked fine until I came to the final audio track. No matter how many times I copy this track Final Cut refuses to do this. It always comes up with the previous item I copied. I have retried this and it will copy all the items except one. As you would expect I have done a fair amount of work on this track in the form of equyalisation, a comnpression filter and numerous keyframes on the level to come out with a mix that I am happy with. I cannot however move it from the original project.
I find this totally unacceptable and consider the software to be unfit for purpose as a result. Unfortunately the apple terms and conditions state that all purchases are final and I have no recourse upon them for the fact that it does not work.
I cannot see how an update will fix a problem with my software that is not universal to all users. I believe that I can reinstall it without being charged again but am hesitant to do this for fear of losing the large amount of work that I have put into the project.
My only hope now is to ring the premium rate number for customer support in the unlikely hope that it can be solved this way.
Not Happy
Simon

Problems between Xcelsius and WebDynpro for Java

How should I do to show Xcelsius in WebDynpro for Java?
How should I transport data between Xcelsius and WebDynpro?
How should I control WebDynpro with Xcelsius?For example,firing plugs in Xcelsius like in WebDynpro to change one view to another.
How should I do to execute a Java method in Xcelsius?For example,scheduling a job on clicking a button in Xcelsius.
Besides these,I also want to know the same problems between other BOE contents and WebDynpro for Java.
Regards,
Abe

Hi Pradeep:
Well that purely depends on the business application (project) your client is proposing. Following are very few factors which will drive for creating web-based applications:
VC: it's a UI modeling tool (non-programming) for creating rapid creation of web-based applications.
WD: its a powered by Java and ABAP with which you can create robust business applications.
If your client is very choosy about rapid application development, reporting, rich user interface, to reduce TCO then VC is the choice. Or if the project contains typical integration with SAP and non-SAP systems, complex business logic development, integration with WCM systems...etc then WDJ is the option.
If youve some sort of custom development with facilitating the Development Infrastructure (NWDI) then WDJ is the only option I could say.
We hope with NW CE 7.1.1(referred by Priyanka Singh) tighter integration between these TWO tools may over come the ambiguity of using them.
Tnx,
MS

Problem in Project progress

Hi,
I am facing problem in Project progress report CNE5.
System is calculated 300 % poc in Adjusted aggregated actual POC & Aggregated actual POC field only after full confirmed the activity (Degree of Processing is showing in report as 100%).
If I confirmed 50 % then system is showing above value 0% .
Also while CNE1 system is taking default method as :SAP 0-100, so i changed it into activity by 00006 (Work) then system calculate the Progress but only after full confirmation, but again it is 300%. which should not.
The configuration settings are as
1. Progress Version: -
Progress Version : 100
Plan Version          : 0
EV Basis                 : 1 ( Cost Plan)
POC weighting      : 4 Work, Basic ( Active Project)
2. Group of Progress version:-
Controlling Area & 1
3. Assign Progress Versions to Group Progress Versions:-
Controlling Area, 100 & 1
4. Define Statistical Key Figure for Percentage of Completion:-
                                                 Usage               SKF (with unit of measurement= %)
       Controlling area                   1 10
       Controlling area                    2 20
       Controlling area                    3 30
5. Define Measurement Methods:-
Measurement method :0000000006 (Work)
Meas. technique : E ( Degree of Processing)
Max POC                : 100
6. Define Measurement Method as Default Value
Progress version(100), Object Type (2:Activity, Internal Processing), Plan/ Actual( 1 &2 :both), Method (00000006 :Work)
7.Maintain Assignment of Cost Element Group
Cost element (PS) , Default selection( Yes) & cost element group(PS_PROP)
I hope above information is sufficient.
My problem is system is calculating poc only after full confirmation but i want at partial confirmation. Also after full confirmation poc is showing 300% which i want 100%.
Regards,
AVI

Hi Experts,
I am waiting for your valuable inputs.
Regards,
AVI

JNDI NIS object access problem

JNDI NIS object access problem:
Hi all,
After long fight, i'm now able to connect to my NIS server on my network. the initial context factory is 'com.sun.jndi.nis.NISCtxFactory' and provider url are given and i obtain namingennumeration of items in the NIS directory.
purpose of my project:
using ypcat command we can view the services,passwd,host... objects in unix.
my project requirement is that i shd open this 'services' object in java (using JNDI probably) and shd access its content.
i'm able to obtain the object and the type of this object is 'NISCtxServices' defined in 'com.sun.jndi.nis.NISCtxFactory' package, but all the classes and methods except some are not public and so im not able to use almost all the methods in this class 'NISCtxServices' .
Can any one help me in accessing the information inside this object.
Thanks in advance! and i'm waiting!

It's because JFrame does not have a public progessbar variable, only your subclass has that.
//change this
JFrame frame = new ProgressBarDemo();
//to this
ProgressBarDemo frame = new ProgressBarDemo();

Importing Between Projects Takes FOREVERRRR

All I'm doing is copying a 3-minute clip from one project to another via the copy/paste options. It's been about 15 minutes and all I see is a dialog box that says Importing Files...Preparing. Trying to cancel the import or Force Quit iMovie has no effect. I guess this is the equivalent of a system hang.
Well, just finished import. It took about 20 minutes for a 3 minute cilp. Why? This makes no sense. iMovie 3 could import a 9-minute clip from another iMovie project in under 3 minutes. Upgrade my ***.

Note that Copying and Pasting clips from one project to another in iMovie 6 is a very different task than importing a file into iMovie 3. (For the sake of those who never used it, iMovie 3 didn't allow Copying and Pasting clips between projects. We had to import the clip's Media file stored in the Media folder of Project A to Project B.)
Because of the non-destructive editing features of iMovie 6, iMovie 6 copies the entire Media file of the clip, not just the clip itself. So if a 5-second clip that's part of a 3 minute file is Copied from Project A and Pasted into Project B, the entire file is copied to Project B. That's so the pasted clip inherits all the non-destructive editing features it had in Project A. (In Project B, you can restore the 5-second clip to 3 minutes it was in Project A.)
So if the 3 minute clip you Copied and Pasted was from a 30 minute file, the entire file was copied with it and it may take some time.
Importing a file is actually lots faster in iMovie 6 than iMovie 3. I just tested importing a 3 minute Media file from one iMovie 3 project to another. It took 56 seconds. In iMovie 6, importing the same file took just 15 seconds.
The difference may be that iMovie 6 is smart enough to recognize the file is a DV file, so instead of converting it to DV, it just duplicates the file, which is a lot faster.
Karl

Help with multi-table mapping for one-to-many object inheritance

Hi,
I have posted on here before regarding this (Toplink mapping for one-to-many object inheritance but I am still having problems mapping my object model to my schema.
Object model
The Person and Organisation objects contain base information and have the primary keys person_id and organisation_id. It is important that there is no duplication of person and organisation records, no matter how many times they are saved in different roles.
There are two types of licenceholder in the problem domain, and the ILicenceHolder interface defines information and methods that are common to both. The PersonalLicenceHolder object represents one of these types of licenceholder, and is always a person, so this class extends Person and implements ILicenceHolder.
The additional information and methods that are required by the second type of licenceholder are defined in the interface IPremisesLicenceHolder, which extends ILicenceHolder. Premises licence holders can either be people or organisations, so I have two objects to represent these - PremisesLicenceHolderPerson which implements IPremisesLicenceHolder and extends Person, and PremisesLicenceHolderOrganisation which implements IPremisesLicenceHolder and extends Organisation.
The model is further complicated by the fact that any single Person may be both a PersonalLicenceHolder and a PremisesLicenceHolderPerson, and may be so several times over. In this case, the same basic Person information needs to be linked to several different sets of licenceholder information. In the same way, any single Organisation may be a PremisesLicenceHolderOrganisation several times over.
Sorry this is complicated!
Schema
I have Person and Organisation tables containing the basic information with the primary keys person_id and organisation_id.
I have tried to follow Donald Smith's advice and have created a Role table to record the specialised information for the different types of licence holder. I want the foreign keys in this table to be licenceholder_id and licence_id. Licenceholder_id will reference either organisation_id or person_id, and licence_id will reference the primary key of the Licence table to link the licenceholder to the licence. Because I am struggling with the mapping, I have changed licenceholder_id to person_id in an attempt to get it working with the Person object before I try the Organisation.
Then, when a new licenceholder is added, if the person/organisation is already in the database, a new record is created in the Role table linking the existing person/organisation to the existing licence rather than duplicating the person/organisation information.
Mapping
I am trying to use the toplink mapping workbench to map my PremisesLicenceHolderPerson object to my schema. I have mapped all inherited attributes to superclass (Person). The primary table that the attributes are mapped to is Person, and I have used the multi-table info tab to add Roles as an additional table and map the remaining attributes to that.
I have created the references PERSON_ROLES which maps person.person_id to roles.person_id, ROLES_PERSON which maps roles.person_id to person.person_id and ROLES_LICENCE which maps roles.licence_id to licence.licence_id.
I think I have put in all the relationships, but I cannot get rid of the error message "The following primary key fields are unmapped: PERSON_ID".
Please can somebody tell me how to map this properly?
Thank you.

I'm not positive about your mappings, but it looks like the Person object should really have a 1:M or M:M mapping to the Licenceholder table. This then means that your object model should be similar, in that Person object could have many Licenses, instead of being LicenceHolders. From the looks of it, you have it set up from the LicenceHolder perspective. What could be done instead if a LicenceHolder could have a 1:1 reference to a person data object, rather than actually be a Person. This would allow the person data to be easily shared among licences.
LicenceHolder1 has an entry in the LicenceHolder table and Person table. LicenceHolder2 also has entries in these tables, but uses the same entry in the Person table- essentially it is the same person/person_ID. If both are new objects, TopLink would try to insert the same person object into the Person table twice. I'm not sure how you have gotten around or are planning to get around this problem.
Since you are using inheritance, it means that LicenceHolder needs a writable mapping to the person.person_id field- most commonly done through a direct to field mapping. From the description, it looks like roles.person_id is a foreign key in the multiple table mapping, meaning it would be set based on the value in the person.person_id field, but the person.person_id isn't actually mapped in the object. Check to make sure that the ID attribute LicenceHolder is inheriting from person hasn't been remapped in the LicenceHolder descriptor to a different field.
Best Regards,
Chris

Externalizable problems between v1.3 and v1.4

Hej you.
I have strange problems with the Externalizable objects.
I Use many Object to Save my file, but wien i try to Externalizable on J1.3 and Denalizable again in J1.4 I got this message:
E:\Programmer\Java\ProrgamName>Java ProrgamName
javax.swing.JInternalFrame; Local class not compatible: stream classdesc serialV
ersionUID=8792953236056021037 local class serialVersionUID=-6387351733537024688
Can i trap J1.4 ID to use 1.3 ID, so it can use on ALL platforms, not just locally?
When I Save and load on the same machine it works fine, but not when i moving to another machine with 1.4. Is a another method, or i Need to save all object to AscII instead in this smart method (that are poorly work)? I have surfed around javasoft.com with finding a answear.
See my early quenstien on (closed):
http://forum.java.sun.com/thread.jsp?forum=31&thread=273990
With very regaards By:
Super Bomba, Denmark
PS. No Duke Dollars this time. Sorry.

Hey.
I found how to work around combatible problems between 1.3 and 1.4. For user, that want to save thier DynamicTree.java (http://java.sun.com/docs/books/tutorial/uiswing/components/example-swing/index.html)
Use follow code (I using Externalizable):
protected DefaultMutableTreeNode rootNode=null;
protected DefaultTreeModel treeModel=null;
public void writeExternal(ObjectOutput stream) throws IOException
{ stream.writeUTF(rootNode.toString());
    Vector values = new Vector();
    Object root = treeModel.getRoot();
    // Save the root, if its Serializable.
    if(root != null && root instanceof Serializable)
    { values.addElement("root");
      values.addElement(root);
    stream.writeObject(values);
public void readExternal(ObjectInput stream) throws IOException
{ thisModel.removeAll();
    thisModel.setVisible(false);
    try
    { String title=stream.readUTF();
      rootNode = new DefaultMutableTreeNode(title);
      Vector values = (Vector)stream.readObject();
      int indexCounter = 0;
      int maxCounter = values.size();
      treeModel = new DefaultTreeModel(rootNode);
      if(indexCounter < maxCounter && values.elementAt(indexCounter).equals("root"))
      { TreeNode root = (TreeNode)values.elementAt(++indexCounter);
        treeModel = new DefaultTreeModel(root);
        indexCounter++;
      // kode for setting the tree start here
    catch (ClassNotFoundException e) {}
}Hope, this is to use :-)
Hi from
Super Bomba

Inheritance problem first part compiles, but can't get the rest to compile.

Here is the assignment :Lab #8, Objects, Inheritance and Polymorphism
Purpose of Lab: Be able to:
Write a Java program that defines, loads, and uses an array of objects.
Create objects of classes.
Understand the notion of polymorphism.
Write superclasses and subclasses.
Create objects of superclasses and subclasses.
Instructions:
1. Write an Abstract Data Type called Animal. Include two instance variables in this class: a String for name and an integer for age. Write a constructor method that takes two arguments and a second constructor that takes no arguments. Write get and set methods for each of the two instance variables. Write a toString method which displays the values of the instance variables for any object of type Animal. Write a speak method that takes no arguments, returns nothing and displays ?Arg! Arg!? on the monitor.
2. Write a second class called Duck, a subclass of class Animal. Add an additional instance variable to those inherited from Animal: an integer called feathers (this variable is used to store the number of feathers that a particular Duck object has). Write a constructor that takes three arguments and another constructor that takes no arguments. Provide set and get methods for the feathers instance variable. Override the toString method to display the values of all instance variables belonging to a Duck type of object. Override the speak method to display a value of ?Quack! Quack!?.
3. Write a third class called Cow, also a subclass of class Animal. Add an additional instance variable to those inherited from Animal: an integer called spots (this variable is used to store the number of spots feathers that a particular Cow object has). Write a constructor that takes three arguments and another constructor that takes no arguments. Override the toString method to display the values of all instance variables belonging to a Cow type of object. Override the speak method to display a value of ?Mooo! Mooo!?.
4. Finally, enter, compile and execute the Farm class shown below. Make sure that all of your classes (Animal, Duck, Cow and Farm) are in the same folder. Compile all of the classes. Run the Farm program. Answer the questions below. Here is my code so far: public class Animals{
    private String name;
    private int age;
    public Animals()
    public Animals( String nVal, int ageVal)
        name =nVal;
        age = ageVal;
    public void setN(String nVal)
        name = nVal;
    public String getN()
return name;
public void setA( int ageVal)
age = ageVal;
public int getA()
    return age;
public String toString()
    return "\nThe name is" + name +", and the age is" + age + ".";
public class Duck extends Animals
private int feathers;
public Duck()
    super();
    public Duck(String nVal, int ageVal)
    super(nVal,ageVal);
    feathers = feathersVal;
    public void setFeathers(int feathersVal)
    feathers= feathersVal;
    public int getFeathers()
        return feathers;
    public String toString()
    return "\nThe name is" + super.getN() + ", and the age is" + super.getA()
    + "\n The Duck's feathers are" +feathers+ ".";
public class Cow extends Animals
    private int spots;
    public Cow(int spots)
        super();
        public Cow(String nVal, int spotsVal)
        super(spots);
            spotsColor = spots;
            public void setSpots(int spots)
        spots= spotsColor;
            public int getSpots();
    public String toString()
        return "\nThe name is" +super.getN()+ ", and the age is" + super.getA()
        + "\n The Duck's feathers are" +feathers+ "\nThe Cow's spots are" +spots+".";
import javax.swing.JOptionPane.JOption;
import javax.swing.*;
public class Farm
    public static void main( String[] args );
    Animals[]farmAnimals = new Animals[4];
            farmAnimals[0] = new Animals("Animals", 3);
            farmAnimals[1] = new Duck("Duck","green,grey feathers");
            farmAnimals[2] = new Cow("Cow", 3, "brown white spots");any help greatly appreciated last assignment of the semester!

Here is the assignment :Lab #8, Objects, Inheritance and Polymorphism
Purpose of Lab: Be able to:
Write a Java program that defines, loads, and uses an array of objects.
Create objects of classes.
Understand the notion of polymorphism.
Write superclasses and subclasses.
Create objects of superclasses and subclasses.
Instructions:
1. Write an Abstract Data Type called Animal. Include two instance variables in this class: a String for name and an integer for age. Write a constructor method that takes two arguments and a second constructor that takes no arguments. Write get and set methods for each of the two instance variables. Write a toString method which displays the values of the instance variables for any object of type Animal. Write a speak method that takes no arguments, returns nothing and displays ?Arg! Arg!? on the monitor.
2. Write a second class called Duck, a subclass of class Animal. Add an additional instance variable to those inherited from Animal: an integer called feathers (this variable is used to store the number of feathers that a particular Duck object has). Write a constructor that takes three arguments and another constructor that takes no arguments. Provide set and get methods for the feathers instance variable. Override the toString method to display the values of all instance variables belonging to a Duck type of object. Override the speak method to display a value of ?Quack! Quack!?.
3. Write a third class called Cow, also a subclass of class Animal. Add an additional instance variable to those inherited from Animal: an integer called spots (this variable is used to store the number of spots feathers that a particular Cow object has). Write a constructor that takes three arguments and another constructor that takes no arguments. Override the toString method to display the values of all instance variables belonging to a Cow type of object. Override the speak method to display a value of ?Mooo! Mooo!?.
4. Finally, enter, compile and execute the Farm class shown below. Make sure that all of your classes (Animal, Duck, Cow and Farm) are in the same folder. Compile all of the classes. Run the Farm program. Answer the questions below. Here is my code so far:
public class Animals{
private String name;
private int age;
public Animals()
public Animals( String nVal, int ageVal) }
name =nVal;
age = ageVal;
public void setN(String nVal)
name = nVal;
public String getN()
return name;
public void setA( int ageVal)
age = ageVal;
public int getA()
return age;
public String toString()
return "\nThe name is"+name+ , and the age is" + age + ".";
{code}{code}
{code}{code}
public class Duck extends Animals
private int feathers;
public Duck()
super();
public Duck(String nVal, int ageVal)
super(nVal,ageVal);
feathers = feathersVal;
public void setFeathers(int feathersVal)
feathers= feathersVal;
public int getFeathers()
return feathers;
public String toString()
return "\nThe name is" + super.getN() + ", and the age is" + super.getA()
+ "\n The Duck's feathers are" +feathers+ ".";
{code}{code}
{code}{code}
public class Cow extends Animals
private int spots;
public Cow(int spots)
super();
public Cow(String nVal, int spotsVal)
super(spots);
spotsColor = spots;
public void setSpots(int spots)
spots= spotsColor;
public int getSpots();
public String toString()
return "string1" + variable1 + "string2" + variable2;
{code}{code}
{code}{code}
import javax.swing.JOptionPane.JOption;
import javax.swing.*;
public class Farm
public static void main( String[] args ){
Animals[]farmAnimals = new Animals[4];
farmAnimals[0] = new Animals("Animals", 3);
farmAnimals[1] = new Duck("Duck","green,grey feathers");
farmAnimals[2] = new Cow("Cow", 3, "brown white spots");
{code}{code}
In Duck The compile errors are as follows:java1: cannot find symbol symbol class Duck extends Animals with the caret under A in Animals
java 13 same as above but for feathers = feathersVal; with the caret under f in feathersVal
java 25 same error caret under s in both supers
Cow has 1 error in java 20 class,interface,or enum expected caret under S in String
Farm a parsing error at last brace but when I add another ending brace i get
java1 cannot find symbol class JOption caret under period between JOptionPane.JOption
java 9 cannot find symbol caret under A in Animals[]farm etc also under A in new Animals
java 10 cannot find symbol caret under D in Duck
java 12 cannot find symbol caret under C in new Cow

Object Inheritance problem between projects

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