Inheriting a Class that inherits a JFrame.. how????

Hi to all!!!
i would like to ask about the LOGIC on how to inherit a CLASS that inherits a JFrame??? for example, i've created a Class that extends a JFrame called "MotherFrame.class". I also want to create another class called "ChildFrame.class" that will extend "MotherFrame.class" and i want ChildFrame to add another button for a specific functionality... my point is i want all the Functionality in "MotherFrame" will be inherit by "ChildFrame" BUT "ChildFrame" will have an added functionality. Like "MotherFrame" has 5 buttons and i wand "ChildFrame" inherit those 5 buttons But also i will add another button to "ChildFrame" that will make it 6 buttons.. how will i do that??? any LOGICAL explanations or CODE SAMPLE will be BEST??
tnx in advance???

class myRootClass{
myRootClass{
    super();
/what ever code
class myLevelOneClass extends myRootClass{
myLevelOneClass{
    super();
/what ever you want more than in myRootClass
class myLevelTwoClass extends myLevelOnceClass{
myLevelTwoClass{
    super();
/what ever you want more than in myRootClass and myLevelOneClass
/and so forth

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Overloading constructor of a child that inherits from a class that inherits from Windows.Forms

The title might be a bit confusing so here is the layout.
- classHForm inherits System.Windows.Forms.Form
- frmDoStuff inherits classHForm (written by someone else and used in several applications)
- does not have a constructor specifically defined, so I added the following thinking it would override the parent
Sub Public New()
End Sub
Sub Public New(byval data as string)
'do stuff
End Sub
In my code, I want to instantiate frmDoStuff, but I need to overload it's constructor and populate fields within this form. The problem I'm running into is that when I run this, it is using the constructor from classHForm and ignores any constructor in frmDoStuff.
I guess you can't override the parent constructor? Is that why it won't work?
I didn't want to overload the classHForm constructor, but I will if that's the way to go.
my code:
dim frm as new frmDoStuff(myString)
Note: I would love to show actual code, but not allowed. Against company rules.

Your code is similar. The value I pass into frmDoStuff is supposed to set a value for a textfield.
Public Class frmDoStuff
Inherits classHForm
Public Sub New(ByVal s As String, ByVal gridData() as String)
txtMyTextField.text = s LoadGrid(gridData)
End Sub
I also have a datagridview I need to populate in frmDoStuff and thought I would have another string or string array as a second parameter to the constructor and then call a routine from the constructor to populate the datagrid.
of course, when I run it this way, the code is not being reached. I'll build an example as COR suggested and maybe someone will see where I'm going wrong.
[UPDATE]
I created a simple example and it worked. So, now I need to try to understand what is different in the actual code.
Here is my example:
Parent Class inherits form
Imports System.Windows.Forms
Public Class classMyForm
Inherits System.Windows.Forms.Form
Sub New()
' This call is required by the designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
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Inherits classMyForm
Public Sub New()
' This call is required by the designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
End Sub
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MyBase.New()
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TextBox1.Text = sStuff
End Sub
End Class
Public Class frmMyForm
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim frm As New frmDoStuff(TextBox1.Text)
frm.Show()
End Sub
End Class
Just to recap. The actual parent was created a few years ago and the child form that I'm calling, "frmDoStuff" was created a couple years back and is used in several applications. I need to use it in my application, but I need to populate a couple
controls when the form is loaded. As you can see in this example, I successfully overloaded the constructor to populate the textbox in frmDoStuff.
In my real life situation, my overloaded constructor seems to be getting ignored when i step through the code. I'll go back and do some more testing.

If java inherites Object , and i inherite another class how possible ?

hey !
if my class B inherits A , and you know that all class inherits a class called Object , then that means B inherts two classes one A (user defined ) and another Object, then is it a violation of rule ? if now how java achieved this feature ? can you justify
for sack of simplicity i wrote following code .
class B extends A
int r;
B(int a)
r=a;
public String toString()
return r +" ";
}

Java supports this:
   Object
      |
      A
      |
      B
      |
      Cbut not this:
   Object
   A     B
      C

About classes and Inheritance

hi every one,
i want use class with object in data block and i want know how i can use inheritance with objects.
becouse i have interview in this two subjects, can any body support my.
thanks,,,,,,,

Hello,
Start Forms Builder, the press F1 to display the online help.
In the search tab, you can type "Class Property" or "Object Library" to find documentation on those topics:
About Property Classes A property class is a named object that contains a list of properties and their settings. Once you create a property class you can base other objects on it. An object based on a property class can inherit the setting of any property in the class that makes sense for that object. Property class inheritance is an instance of subclassing. Conceptually, you can consider a property class as a universal subclassing parent. There can be any number of properties in a property class, and the properties in a class can apply to different types of objects. For example, a property class might contain some properties that are common to all types of items, some that apply only to text items, and some that apply only to check boxes. When you base an object on a property class, you have complete control over which properties the object should inherit from the class, and which should be overridden locally. Property classes are separate objects, and, as such, can be copied between modules as needed. Perhaps more importantly, property classes can be subclassed in any number of modules.
or
Using the Object Library These topics contain information about using the Object Library in Oracle Forms: About the Object Library Removing an Object from the Object Library Creating a tab in the Object Library Deleting a Tab in the Object Library Saving an Object in the Object Library Opening an Object Library Module Displaying the Object Library Closing the Object Library Commenting Objects in the Object Library
Francois

Custom Inherited/Derived Class & the Data Warehouse

Hi there,
I'd like to reference an older post by Travis in regards to getting a Custom Class into the Dataware House:
DW Reporting on Custom Class
Scenario:
I've created an Inherited/Derived Class, with its own Form (not an
Extension).
This Class Inherits from the Base Incident Class.
Inherited Class has two (2) new properties (a String and a List Property).
Class and Form is all working well within the SCSM Console.
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components.
To get this class I am aware that it has
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Questions:
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2. Online resources (technet and other) state a dimension has to be created for the new Class <Dimensions>, but do I also need to include <Outriggers> as well as <Facts>
for this Class?

In JDeveloper 10.1.2, I configure in adfjclient_binding.xml:
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className="com.lib.swing.JTableExt"
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longLabel="com.lib.swing.JTableExt"
tooltipText="com.lib.swing.JTableExt"
bindingType="DCTable"
icon="/oracle/ideimpl/resource/images/palette/JTable.gif">
<useTemplate>
<![CDATA[${FieldName}.setBinding(panelBinding,"${BindingName}","${IteratorBinding.getId()}")]]>
</useTemplate>
<imports>
<![CDATA[javax.swing.JTable;javax.swing.table.TableModel;com.lib.swing.JTableExt]]>
</imports>
</controlDefinition>
and In my projects, I only drag and drop JTableExt into my form, it auto generate code:
jTableExt1.setBinding(panelBinding, "SubProfileTypeView2", "SubProfileTypeView1Iterator");
because setBinding function of JTableExt in my library, it contains setmodel function and some other function.
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Jacque

Syntax Error "Method was not declared or inherited in class"

Dear all,
I am seeing the following syntax error in one of the standard classes CL_ICCMP_BT_INRHISTRESULT_CN01 which says "Method "XYZ" was not declared or inherited in class". Need help to identify when this error would occur or where I should be checking for this error within the class.
I checked other systems for the same class, the method XYZ does not exist there too but still the class has no syntax errors!
Would appreciate your help!
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Hi Gayathri,
please give detailed information on how and where you get this error.
CL_ICCMP_BT_INRHISTRESULT_CN01 does not exist in our ECC600 system.
Regards,
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AS3.0: How to extend a class that extends MovieClip

When I try to set the base class of a library symbol to a
class that doesn't DIRECTLY extend MovieClip, but instead extends
another class that DOES extend MovieClip, it's disallowed, saying,
"The class 'Whatever' must subclass 'flash.display.MovieClip' since
it is linked..."
Is this just a validation bug in the property windows, only
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specified class does extend MovieClip, just two levels in instead
of one. Is there a fix for this? Or must library symbols always
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Which classes from flash.display have you imported. Just
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of its properties. Saying a class extends sprite doesn't give you
access to all of it's properties, members and display unless you
first import flash.display.* or flash.display.Sprite. If you aren't
already importing flash.display.*, try importing
flash.display.MovieClip and see what happens...

Abstract classes and inheritance

I'm trying to do some simple inheritance but I'm a little stuck. Without giving too much away here's what I have (or am trying to have). I have an abstract "Test" class and a number of concrete classes that extend that abstract class. In my main method I have an array of Test objects. Each object in the array is a certain kind of "Test" and each one has its own way of doing most things but it doesn't make sense to have just a plain Test object because it is an abstraction. In my code I go through the array and execute a method, runTest(), for each Test in the array. However, my abstract Test class doesn't have a runTest() method b/c it will never get used and java complains. At runtime shouldn't java figure out, OK this is TestA, so go to TestA's runTest method (polymorphism?). What should I put in my runTest method in the abstract class? I know I can put anything there but what is standard?

JFactor2004 wrote:
... Each object in the array is a certain kind of "Test" and each one has its own way of doing most things but it doesn't make sense to have just a plain Test object because it is an abstraction. In my code I go through the array and execute a method, runTest(), for each Test in the array. However, my abstract Test class doesn't have a runTest() method b/c it will never get used and java complains. If you want to instantiate the Test class
you need to provide an implementation for the runTest() method,
something like/*type*/ runTest() { throw new UnsupportedOperationException(); }

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I am receiving this erro message when trying to invoke a rule (assert, execute ruleset,retrieve results) on a XML Fact structure that has demo element as parent with a ref to two child elements: invoice and po.
I simply used the wizards to deploy the decide activity so I have no clue what this might be.
The rule session EVALUATEAPPROVAL:230011 failed to execute step assert
RUL-00025:fact class multiple inheritance not supported
oracle.rules.rl.exceptions.RLRuntimeException: fact class multiple inheritance not supported
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     at jess.DefinstanceList.assertObject(DefinstanceList.java:570)
     at jess.Rete.assertObject(Rete.java:1557)

RL only supports single inheritance, either from an interface or a class. JAXB 1.0 generates a set of classes that inherit and implement each other. If the RL code is generated in the wrong order and child classes are generated before parent classes, then you get the indicated exception. In most cases, not importing the element class will prevent this from happening, and in the rest not importing the ObjectFactory class will prevent it (or unchecking the "supportsXpath" option). You can't use the element class in the rules anyway since the properties it inherits from it's parent don't show up in lists.
So, it's not the complexity of the XSD that matters in processing, only that a single inheritance chain is specified. If you follow the original instructions with your complex XSD, I believe you will see it work correctly.
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Static Inheritance, Constructors --- Classes as objects

First I asked myself why constructors are not inherited.
Then I asked myself why Static Methods are not inherited.
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Is there any reason I'm missing?
I would love at least inheritable static methods.

That's OK, but that method would not be inherited, and would execute in the context of the superclass.
Picture this (a simple "template method"):
class SuperClass {
     public static void staticMethod() {
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          other();
     public static void other() {
          System.out.println("other in SuperClass");
class SubClass extends SuperClass{
     public static void other () {
          System.out.println("other in SubClass");
Here, I just want to redefine other() in SubClass, but it calls the SuperClass version.
Let's test:
public class Test {
     public static void main(String[] args) throws DatabaseErrorException, TableUpdateException {
          SuperClass.staticMethod();
          SubClass.staticMethod();
Output:
Static in SuperClass
other in SuperClass
Static in SuperClass
other in SuperClass
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Inheriting inner classes

Hi everybody,
I can't seem to find a clear answer on this, and it's probably a silly simple question, but here goes (it needs a little setup first)--
A base class X has two subclasses, Y and Z.
Both Y and Z have static inner classes which contain a factory method that calls their constructors (that is, the methods call the constructors for class Y or class Z).
Is it possible to have an inner class Q in base class X which can be inherited by classes Y and Z and used to call the constructors of Y and Z?
Making a separate inner class for each subclass works fine, but they are very similar from class to class, and it would be nice to be able to do this to cut down on code.
If this is possible, I have one more question:
Is it possible to have an inner class R in class Y that extends inner class Q in class X?
If anyone could give me some clarification on these questions, and, if possible, the syntax to answer them, I'd appreciate it.
Thanks,
Jezzica85

jezzica85 wrote:
Is it possible to have an inner class Q in base class X which can be inherited by classes Y and Z and used to call the constructors of Y and Z?No. If you write new Y() you have named the class you are instantiating. There's no simple way (short of reflection) to express "some other class".
By the way, did you see my reflection example in your other thread?
Making a separate inner class for each subclass works fine, but they are very similar from class to class, and it would be nice to be able to do this to cut down on code.You can move most common code up the hierarchy.
>
If this is possible, I have one more question:
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class X {
    class Q {}
    static class S {}
class Y extends X {
    class R extends Q {}
    static class T extends S{}
}--BDLH

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How do I write a Java Class that Loads a RPT and exports to PDF All Automatically?

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How to call a class that extends a frame from a panel ?

How to call a class that extends a frame from a panel ?
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|---------------------------------|-------------------|
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|---------------------------------|-------------------|
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Inheriting a Class that inherits a JFrame.. how????

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