Referencing a instance inside a Class

Hi --
I am working on converting a movie clip to a Class so that I
can more easily
reuse it in later projects.
I have pretty succesfully converted my AS code from my
include file to a
Class file. However, I have two objects on the stage, topBG
and botBG and
whenever I reference these items inside my code, such as
botBG._y I get an
error at compile time saying "There is no property with the
name 'botBG'"
How can I set it so these assets can be referred to inside my
code?
The code worked fine when it was just a movie.. Also, this is
ActionScript
2.0.
Thanks
Rich

Hi --
Thanks for responding. What I had created was this:
I have a movie clip, "MainClip" with two movie clips ("ClipA"
and "ClipB")
inside that clip.
I put MainClip on the stage (_root) and had Actionscript code
in the main
time line. I referenced ClipA & ClipB this way:
MainClip.ClipA
MainClip.ClipB
Now, I want to turn MainClip into a class, "classMainClip".
However, having
moved the Actionscript into the class AS file and changed the
above
reference to just
ClipA
ClipB
I get an error at compile time.
How do I refer to the movie clips, "ClipA" and "ClipB" inside
the
actionscript that is the over lying class of which I want
these clips to be
a part?
Hopefully I've explained this right.
Thanks,
Rich
"kglad" <[email protected]> wrote in message
news:gibuh8$qbh$[email protected]..
> you want class instances to be able to reference each
other?

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Instantiate an instance inside its class

I always read codes like following:
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B b = new B( );
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Everything in the world is an object - not only the building, but also the blueprint for this building is some kind of sheet of paper.
In Java, the Class Objects are loaded as soon as you go into runtime. The VM recognizes all necessary classes, and creates one single instance of them. So, static attributes are indeed a singleton pattern on class level...
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Hi there.
I'm writing a class that extends MovieClip and that is linked to the MovieClip Object authored via Flash Pro during development (Father object).
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kglad,
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Delete the variables number1 and number2 from your inner class. Your inner class can access the variables in the outer class directly. Unless you need the inner and outer class variables to hold different values then you can give them different names.
In future place code tags around your code to make it retain formatting. Highlight code and click code button.

How to create the instance of a class and to use this object remotely

I have to change a standalone program to do it working on a local net.
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thank in advance
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tonyMrsangelo.

tonyMrsangelo wrote:
I have to change a standalone program to do it working on a local net.
the program is prepared for this adjustment, because the only problem for this change came from the use of the database; and, in the application, all the accesses to the database come from only a class that supplies a connection to the database.
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I think this could be a good idea... Which is why JEE and implementations of that exist.
But I don't have practice with distributed applications and I would ask some suggestion about the way to realize my modification.
(in particular how to get and use, in the "client applications", the instance of the class that give the connection to the database from the "server application").
You can't pass a connection from a server to a client. Nothing will do that.
As suggested you can create a simple RMI server/client set up. Or use a more feature rich (and much more complex) JEE container.
RMI is simple enough for its own tutorial
[http://java.sun.com/docs/books/tutorial/rmi/index.html]
JEE (previously called J2EE) is much more complex and requires books. You can get a brief overlook from the following
[http://java.sun.com/javaee/]

Referencing a function in a class from another class

For example : I got the following situation
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public main {
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Is this possible to reference a method from the same instance to which main is pointer, because when i do
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two.getJ();
in classOne, i'm referencing another instance.
I know there exist something like friends in java, but i'm seeking for a more "nice" solution
thx

I wasn't sure if I understand what you're looking for. But if I understand well...
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But you cannot use the methods of another class directly, unless that another class is the embedding class (calling of methodOfMain in the code above). You must use an instance of the class (or the class name, in case of static methods) to reach the methods.
Is this what you're seeking for?

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Neha_Khands wrote:
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Hello David
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What is the purpose of Static methods inside a class?

Hi,
What is the purpose of Static methods inside a class?
I want the answers apart from "A static method does not require instance of class(to access) and it can directly be accessed by the class name itself"
My question is what is the exact purpose of a static method ?
Unlike attributes, a separate copy of instance attributes will be created for each instance of a class where as only one copy of static attributes will be created for all instances.
Will a separate copy of instance method be created for each instance of a class and only one copy of static methods be create?
Points will be rewarded for all helpful answers.

Hi Sharma,
Static methods is used to access statics attributes of a class. We use static attributes when we want to share the same attribute with all instances of a class, in this case if you chage this attribute through the instance A this change will change will be reflected in instance B, C........etc.
I think that your question is correct -> a separate copy of instance method will be created for each instance of a class and only one copy of static methods be create ?
"A static method does not require instance of class(to access) and it can directly be accessed by the class name itself"
Static Method: call method class=>method.
Instance Method: call method instance->method.
Take a look at this wiki pages.
[https://wiki.sdn.sap.com/wiki/x/o5k]
[https://wiki.sdn.sap.com/wiki/x/ZtM]
Best regards.
Marcelo Ramos

Managing Multiple threads accessing a single instance of a class

Hi,
i have to redesign a class, say X, in such a way that i manage multiple threads accessing a single instance of the class, we cannot create multiple instances of X. The class looks like this:
Class X{
boolean isACalled=false;
boolean isInitCalled=false;
boolean isBCalled=false;
A(){
isACalled=true;
Init(){
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B();
C();
isInitCalled=true;
B(){
if(!isACalled)
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isBCalled=true;
C(){
if(!isACalled)
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if(!isBCalled)
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Init is the method that would be invoked on the single instance of this class.
Now i cannot keep the flags as instance variables coz different threads would have differrent status of these flags at the same time, hence i can make them local, but if i make them local to one method, the others won't be able to check their status, so the only solution i can think of is to place all the flags in a hashtable local to method INIT AND INITIALIZE ALL OF them to false, as init would call other methods, it would pass the hashtable reference as an additional parameter, the methods would set the flags in the hashtable and it would be reflectecd in the original hashtable, and so all the methods can have access to the hashtable of flags and can perform their respective checks and setting of flags.
This all would be local to one thread, so there's no question of flags of one thread mixin with the flags of some other thread.
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Is this the best way, would this work?
In java, everything is pass by value, but if i pass the hashtable reference, would the changes made inside the called method to the hashtable key-value would be visible in the original hashtable declared inside the calling method of which the hashtable is local variable?

In Java object variables are passed "by copy of reference", and primitive variables "by value".
The solution with HashMap/Hashtable you suggest is ok, but I think you should read about ThreadLocal class:
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/ThreadLocal.html

How can I write an instance of a class in a static variable

Hi !
I have an instance of a class
Devisen dev = new Devisen();
In an other class I have a static method and I need there the content of some variables from dev.
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{ String text=dev.textfield.getText()
I get the errormessage, that the I cannot use the Not-static variable dev in a static variable.
I understand that I cannot reference to the class Devisen because Devisen is not static I so I had to reference to an instance. But an instance is the same as a class with static methodes. (I think so)
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Thank you Wolfgang

Hallo, here is more code for my problem:
class Login {
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One solution ist to give the instance to the static function, with the keyword "this"
if (!Check.check_field2(this)) return;and get the instance
public static void check_field2(Devisen dev)BUT is that a problem for memory to give every method an instance of the class ? I have 50 fields to control and I dont want do give every check_method an instance of Devisen, if this is a problem for performance.
Or do I only give the place where the existing instance is.
Hmm...?
Thank you Wolfgang

Referencing a instance inside a Class

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