Extending a class

I am writing 3 files for a homework assignment and two of them extend the last one. WHen i compile the last I get no prob. When I compile the other two I get the cannot resolve symbol error. I have all three files in the same folder. What do I need to do to have the other two recognize and properly extend the class.

when I say javac yourfile.java -classpath=%CLASSPATH%;C:\yourfolder
I get Bad command or file name error. I tried just setting classpath=%classpath% and I still get Bad command or file name error. It only works if I use set classpath=%classpath%.

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Is it possible to create a javafx class without extending Application class ? If yes, how ?

There is no such thing as a javafx class. It is a regular java class. The Aapplication class is the entry
point for JavaFX application. You have to extend the Application class to create Javafx application .

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Hey!
I'm using the Reflection API
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class CustomClassLoader extends ClassLoader. I have defined 'findClass(String className)' method in CustomClassLoader.
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defineClass (className,byteArray,0,byteArray.length);
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the problem:
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sure what role does the superclass play when i'm
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Error while extending controller: class name is wrong or not included

Hi All,
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Loading external swfs extending from classes in the same shared codebase

Hey there!
I'm currently developing a game in flash and want to be able to divide up my .fla assets in a way that means artists can work on a game menu .fla in isolation from the game.fla and rest of the game code.
If I could briefly explain how I've approached this so far, I would be extremely if people could shout in my general direction and tell me I am stupid, or even better still, give me helpful advice as to where I am going wrong and how I can correct it!
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No it doesn't seem to, however though they both have a reference to the HighScoreManager so there is some overlap there between menu and game code, but the menu classes don't reference any symbols on the game.fla...
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public dynamic class HighScoreMenu extends GameMenu
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private var _highScoreManager:HighScoreManager;
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I load the swf "HighScoreMenu.swf" and once its loaded I obtain the menu class like so:
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Not able to pass values to variables in extended Tree class

Hi,
I have a as class that extends from Tree, additionally this
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public class MyTree extends Tree {
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<customTree:MyTree
arrayColl={list}
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Thanks,
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below is the canvas:
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="
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<![CDATA[
import mx.collections.IViewCursor;
import mx.collections.ArrayCollection;
import com.citi.ascript.TreeData;
import mx.controls.Alert;
import com.citi.ascript.CitiTree;
public var availableTreeDataColl:ArrayCollection;
public var selectedTreeDataColl:ArrayCollection;
public var treeData:TreeData;
public var srcTree:CitiTree;
public var availableTreeDataArray:Array = [{a:1},
{b:2},
{c:3}
public function formTreeData():void {
var tempColl:ArrayCollection = new
ArrayCollection(availableTreeDataArray);
availableTreeDataColl = new ArrayCollection();
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var tempTreeData:Object = tempColl
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treeData.a = tempTreeData.a;
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]]>
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<mx:VBox>
<mx:Label text="Drag & Drop the analysis sections
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height="20"/>
<mx:HBox id="treeContainer"
creationComplete="formTreeData();">
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</customTree:MyTree>
</mx:HBox>
</mx:VBox>
</mx:Canvas>
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Thanks,
Lucky

How to map a custom enum list to a custom form property in an extended incident class

Hi,
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Here's what i've done:
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I created another unsealed MP called TST.Incident.Library for storing incident library customizations and extended the incident class to add an extension class i called ClassExtension_Affected scope with a custom property i called AffectedScope. Then i am trying
to set the datatype of this property to "list". In the "select a list" dialog i cannot chose my previously sealed MP with the custom enum list in it. Why?
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- Should i create one sealed MP for both the custom enum list and the extension class + custom property?

Hi,
Authoring Tool simply isn't informed about your list. Open the sealed management pack where you define the root of the list in the Authoring Tool and in the same time open TST.Incident.Library. You will have two opened MPs in the Authoring
Tool and be able to add a custom list for your custom field.
Cheers,
Marat
Site: www.scutils.com Twitter:
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Abstract class extends other class?

What happens when a abstract class extends other class?
How can we use the abstract class late in other class?
Why do we need an abstract class that extends other class?
for example:-
public abstract class ABC extends EFG {
public class EFG{
private String name="";
private int rollno="";
private void setName(int name)
this.name=name;
private String getName()
return this.name;
}

shafiur wrote:
What happens when a abstract class extends other class?Nothing special. You have defined an abstract class.
How can we use the abstract class late in other class?Define "Late". What "other class"?
Why do we need an abstract class that extends other class?Because it can be useful to define one.

How to extend a class in same package

I have a class called LoginBean.java which extends the class ConnectDB.java
this both files have a statement both the classes are under the directory pmtools.
and both are included in package pmtools.
(they both have statement "package pmtools; " at top)
when i am trying to compile LoginBean.java, it is giving me following error,
LoginBean.java:7: cannot resolve symbol
symbol : class ConnectDB
location: class pmtools.LoginBean
public class LoginBean extends ConnectDB
^
LoginBean.java:59: cannot resolve symbol
symbol : variable dbConn
location: class pmtools.LoginBean
stmt = dbConn.createStatement();
^
2 errors

did you compile the other class already? donnow if ithahahaha!!!!!
ok include the import statement
import pmtools.ConnectDB;
in the second class and than compile..

Extend base class to customize some properties

Hi
Using Jdev 11g
I need to extend UIGraph class to change the defualt color of pie graph . anyone have a solution to it ? i already extend the class but i donot know what is next steps and what is the method i must to override ??

Hi frank
how can i use skinning to change default color of pie chart . for example i have 5 status and count them for every emp but i need specified color for every status ( green for done , red for not done ans so on) if one status missing ( the emp have not (,done status) for example) then the pie color rearranged for other status ???:)). i try to change color in EL but color attr of pie series donot support EL

How to Extend Java class in UI Module

Hi All,
I am trying to make z for one of the java file GenericSearchDynamicContent.java in the standard package com.sap.wec.app.common.module.catalog.ui.utils. Can anyone please let me know what are steps do i need to follow to extend the same java file in our customer namespace and make use of it.
Thanks in Advance.
Regards,
Rahul.

Hi Rahul,
It's upto you whether you want to keep seprate packages for custom changes (then create your own package and keep all the Z class under this) or create a Z_GenericSearchDynamicContent.java and extend this class by GenericSearchDynamicContent.java.
After doing this you can make your custom changes accordingly and you have to also make the changes in *config.xml (replace this entry GenericSearchDynamicContent by Z_GenericSearchDynamicContent.java.) files as mapping is done there.
Could you please let me know if you need any further information.
Thanks,
Hamendra

Implementation of DragManager in extended Panel class

Hi,
I'm facing a problem during implementation of DragManager in
extended Panel class. I've a component which is extending the Panel
class where I've attached four Images with their corresponding
dragging features.
Say, the four images' x positions as these: x1 = 10, x2 = 20,
x3 = 30, x4 = 40. After adding the DragManger class and
implementation of dragging feature to those Images, the dragging is
works fine. But, the problem is, when I'm dragging x1 image, the
imageProxy associated to x1 starts showing from exactly the x1
position, but also all the three images' (x2, x3, x4) imageProxy
starts dragging from x1 position only! When the expected result is,
the x2 imageProxy shud starts drag from x2 x position itself, and
for other x3 imageProxy from x3 position and x4 is their also.
Except the x1 image, all the other three's imageProxy are not
starts from their respective image x position.
Anyone can give any idea.. how to overcome this?
tnks.
ASB

What are the:
DragManager.doDrag(initiator, ds, event, imageProxy, x, y,
1.0);
x and y parameters in your drag manager's doDrag method? They
should be calculated from the point of mouse click that would
event.localX and event.localY.
ATTA

Package.Class extends Package.Class ??

Is there any way I can make a class in a package extend another class in the same package://---- File: JrcCode1.java
package jrc;
public class JrcCode1 {
public JrcCode1() {
    System.out.println("JrcCode1");
//---- File: JrcCode2.java
package jrc;
public class JrcCode2 extends JrcCode1 {     //cannot resolve symbol, class JrcCode1
public JrcCode2() {
    super();
    System.out.println("JrcCode2");
}Thanks,
James

The current directory is not automatically in the classpath.
You have to set it up that way. That may be your problemI have tried doing this, and it's still the same! The first code compiles but the second code fails:
javac -sourcepath . -classpath . JrcCode1.java
javac -sourcepath . -classpath . JrcCode2.java
Try extending jrc.JrcCode1. It might work, but i didnt test it outI have tried this, and it still fails:
JrcCode2.java:3: cannot resolve symbol
symbol : class JrcCode1
location: package jrc
public class JrcCode2 extends jrc.JrcCode1 {
Any other ideas?
Thanks alot!
James

Implemenet/Extend interface/class in default package

Filename: DeaultInterface.java
public interface DefaultInterface {
// Abstract Methods...
Filename: ConcreteClass.java
package com.company;
import DefaultInterface;
public class ConcreteClass implements DefaultInterface {
// Implementation of Abstract Methods...
}When I compile above java code it gives error "cannot find symbol. symbol: class DefaultInterface".
Can anyone explain why can't we implement the interface/extend the class in default package(no package)?
Edited by: 974531 on Dec 2, 2012 11:07 PM

>
When I compile above java code it gives error "cannot find symbol. symbol: class DefaultInterface".
Can anyone explain why can't we implement the interface/extend the class in default package(no package)?
>
You CAN implement the interface defined in the default package.
What you CANNOT do is import it. And that is because the Java Language Specification specifies that named types can only be referenced by their simple name if they are imported and must otherwise be referenced by their fully qualified name.
See the 7.5 Import Declarations in the Java Language Specification - http://docs.oracle.com/javase/specs/jls/se7/html/jls-7.html
>
An import declaration allows a named type or a static member to be referred to by a simple name (§6.2) that consists of a single identifier.
Without the use of an appropriate import declaration, the only way to refer to a type declared in another package, or a static member of another type, is to use a fully qualified name (§6.7).
A type in an unnamed package (§7.4.2) has no canonical name, so the requirement for a canonical name in every kind of import declaration implies that (a) types in an unnamed package cannot be imported, and (b) static members of types in an unnamed package cannot be imported. As such, §7.5.1, §7.5.2, §7.5.3, and §7.5.4 all require a compile-time error on any attempt to import a type (or static member thereof) in an unnamed package.
>
So you can't reference that type by importing it because you can't import a type that doesn't have a canonical nmae. And you can't just use the simple name because, as the first statement above says you have to import it to use the simple name.
When you use the simple name of that type without an import the simple name would refer to a class IN your 'com.company' named package.

Searching for extended ABAP Classes documentation

Hi,
I'm a newbie to this forum (perhaps I'm a newbie in an abap too - with my 1.5 yrs abaping) but I'm interested in a few topics related to classes available in the repository:
1. Where can I find full and detailed info (means description of interfaces both public and private/static) on classes included in a dev.class SLIS, SCET, especially specific ones - currently I'm looking for a documentation on class <cl_alv_changed_data_protocol>, because the info supplied in the repository is not so obviously clear for me.
2. Can someone point me to a SAP cource/academy -name(s) related to the public classes related to a gui programming and!!!! their support-classes (such as mentioned one above) - which is most important.
3. (specific question) In the OO framework(s) I worked with in my background there was a possibility to 'extend' some class' behaviour (usualy adding interface). Is there any possibility in a SAP environment to do this and if yes where can I find a docu/info on how to achieve this? Is this achieved only with a related access key?
4. Please could someone provide me a dev.class names with demo-programs (such as SLIS, SCET) related (mostly) to a GUI-programming?
Perhaps checking the source of the demo-reports supplied in these dev.classes would help me, but occasionaly it's a bit more complicated and time-consuming than to check a related docu, isn't it?
The info-sources I have (and used widely) are:
a) html-documentation with my (ok, our) installation > 4.6C (both integrated into an environment and CHM-help).
b) 'Controls Technology - Workbench edition' - which I would recommend to all the programmers interested in this area.
c) 'An Easy Reference for ALV Grid Control' by Serdar SIMSEKLER (BTW, thank you very, very much Serdar! for providing this reference to the public, I found it very usefull)
d) of cource, the Class Builder via Repository Browser (se80) which usually and unfortunately doesn't report me any class information when asked.
e) occasionaly google-ing the world with a specific question and checking this fourm or some related one(s) in the sap community and in de.alt.comp.sap-r3 newsgroup (unfortunately for me the last one is basicaly with postings in German, which makes it unusable to me).
Perhaps most of you would agree there is a lack of information on these topics. Or, of course, I'm still a newbie and don't know how/where to find it
Please note, answers in sort of 'Feel free to ask with a specific question here...' are not the answer(s) I'm looking for I know this possiblilty and am using it :-).
Finaly, one question off topic and related mostly to the moderators:
Is there an intention or even better a possibility to achieve this forum via NNTP-protocol (means using a standard news-client)? It would be great for me if it's possible or is intended to become possible - I'm using a news-client to track few newsgroups (forums) and it would be great not to switch to a different browser to track this one, which is IMHO the best english-speaking abap-related forum.
Many thanks in advance.
Best Regards,
Ivaylo Mutafchiev
BC Consultant - Abap developer
VBS Ltd.
Varna. Bulgaria
Message was edited by: Ivaylo Mutafchiev

From within SE80 choose menu Environment->Controls Examples. This will lead you to many fine Enjoy Control Example programs.
Also SAP had a class several years ago called BC412 ABAP Dialog Programming Using EnjoySAP Controls. It might still be around in some format.

[svn:bz-trunk] 21285: Need to change _parent, privateCall and instance properties from private to protected in order to extend this class for another project

Revision: 21285
Revision: 21285
Author:   [email protected]
Date:     2011-05-20 07:53:23 -0700 (Fri, 20 May 2011)
Log Message:
Need to change _parent, privateCall and instance properties from private to protected in order to extend this class for another project
Modified Paths:
    blazeds/trunk/apps/ds-console/console/ConsoleManager.as

Revision: 21285
Revision: 21285
Author:   [email protected]
Date:     2011-05-20 07:53:23 -0700 (Fri, 20 May 2011)
Log Message:
Need to change _parent, privateCall and instance properties from private to protected in order to extend this class for another project
Modified Paths:
    blazeds/trunk/apps/ds-console/console/ConsoleManager.as

Extending a class

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