Urgent: Mysterious behavior in class instantiation

Hi
I have a Class A trying to instantiate a Class B , both of them being in the same jar. When a class C ( located in another jar) calls this method on Class A that instantiates B, execution seems to stop at that point. However there are no errors visible.
When i create an Instance of class A and call the same method that instantiates B in a Junit test, it works fine.
I am using jboss and have put the jars in the default/lib folder.
Any insights into this would be highly appreciated.
Thanks
-DD

The key words are "seems" and "visible." If execution really does stop there, then it's almost certainly because there was a Throwable. If this is the case, then the problem is the visibility of the error. The other likely possibility is that execution does not actually stop there, and you are misunderstanding what's happening. In ether case, you need more output statements around the area of the problem to find out what's going on.

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I have an Abstract class which is extended
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You mean to say that now we have a handle or a reference to the
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Have you checked if the processStimulus method will ever be executed (e.g. print something or use a debugger and set a breakpoint). If it is not executed maybe the radius of the BoundingSphere of the Behavior is to small ?
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Is the curve moving out of the viewing frustrum (behind the front or back clipping planes) ?
Add some Appearance object with a color other than the default.

Understanding class instantiation

Given classes A, B, and C where B extends A and C extends B and where all classes implement the instance method void doIt(). A reference variable is instantiated as �A x = new B();� and then x.doIt() is executed. What version of the doIt() method is actually executed and why?
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A static method can be replaced, which can look like overriding if you don't know the difference.
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class B extends A {
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Inner class instantiation

Compiling the following code gives me error
public class A
public A()
boolean a=true;
class B
{ // removed syntax error "Inner"
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public static void main(String [] arg)
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}The error I get is
"A.java": Error #: 200 : '(' expected at line 30, column 21
could somebody advise me as what I am doing wrong??

this will compile
public class A
public A()
boolean a=true;
static class B
{ // removed syntax error "Inner"
boolean a;
B()
a = false;
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A a = new A();
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System.out.println(a);
I was talking about a member inner class. Thanx anyway. Yahya's solution worked. Interesting thing is that the way I was instantiating it is mentioned in Java Sun Certified Programmer Book in Inner classes chapter. by Syngress. But that definitely seems to be a mistake.

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thanks
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ClassLoaders are easy to sub-class.
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We are loading plugins via Java reflection. Anything instantiated via newInstance() does not appear to have access to the Local interface.
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E4X Filter Mystery in AS Class

Hi,
I have a very mysterious behaviour when I try to filter an
XML - depending on the place where I apply the filter expression.
The app should show a datagrid that displays a XML that can
be filtered via a combobox.
I have attached 2 code examples. The first one shows all the
code cramped into one single mxml file
while the other one shows the filtering code being moved
outside into a AS class for capsuling reasons.
The interesting part on the AS class is that as soon as I
want to apply a filter expression to the XML
variable "source_" it delivers me an empty result set.
Even if I create a static filter expression something like
"source_.Statement.(@division=='A')" -
the result is always an empty result set.
I am completely stunned.

"KUZELJ" <[email protected]> wrote in
message
news:gm6v96$b2c$[email protected]..
> Hi,
> I have a very mysterious behaviour when I try to filter
an XML - depending
> on
> the place where I apply the filter expression.
> The app should show a datagrid that displays a XML that
can be filtered
> via a
> combobox.
>
> I have attached 2 code examples. The first one shows all
the code cramped
> into
> one single mxml file
> while the other one shows the filtering code being moved
outside into a
> AS
> class for capsuling reasons.
> The interesting part on the AS class is that as soon as
I want to apply a
> filter expression to the XML
> variable "source_" it delivers me an empty result set.
> Even if I create a static filter expression something
like
> "source_.Statement.(@division=='A')" -
> the result is always an empty result set.
> I am completely stunned.
First, if you used an XMLListCollection, you could just use
its
filterFunction and not have to go through so many
convolutions--the logic
would already be encapsulated in a class that Adobe was nice
enough to
create for you that has been through QA and everything.
Second, what has the debugger told you about what's going on?

Class instantiation - and is this a pattern?

Firstly, my apologies if my goal here is unclear. I am still learning the concepts and may perhaps have a lack of words for the appropriate terms or processes. Hopefully I can convey my meaning enough to get some feedback.
I have a group of classes, all inheriting from a base class. My task is to add the functionality in these classes to another set of derived classes by simply creating instances of them in these classes constructor methods. To my knowledge this means the instance must take the class it's written in or (this) as it's parameter. My question is then really how should my external helper classes be written so they can be instanced in this way and is there a pattern that this idea conforms to and if so could someone explain this to me. My thanks in advance for any help, tips or directions to a good reference on this topic.

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[urgent please] How many Classes in jdk

Hi Can some body answer my simple Question
How many total NUMBER OF CLASSES were there in
1)JDK1.2
2)jdk1.3
3)jdk1.4
Thanx in advance
with regards
Karthik

Please do not post 3 times the same question.
As for the number of classes, download the JDKs, decompress the jars and use the explorer to get the .class count.

Dynamic Class Instantiating

Hi,
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I think u can better solve this by using Hashtable like data-structure.
The key will be a String(external data like phone no.-as u said).
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Class className=Class.forName("ClassName");
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name exactly u need to use reflection.
Object activeObject=className.newInstance();
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Class instantiation through mxml - setting properties

Hi,
I'm trying to create a reusable component with an actionscript class.
I'd like to be able to set a handful of the class' properties withmxml attributes. So far, I've had no success doing so.
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In my example, I'm just trying to set value of the property "myValue." Can anyone tell me what I'm doing wrong? What am I missing?
Thanks in advance for any help!
Main application (TestProj.mxml)
<?xml version="1.0" encoding="utf-8"?>
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 public function get myvalue():String
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Hi,
The property gets set correctly, but the constructor of your class will always execute before the attributes - this is because Flex needs to create the instance and execute the c-tor before it can set the values on the instance. Instead try something like this:
<pkg:TestClass id="foo" myvalue="some value" initialize="{Alert.show(foot.myvalue)}" />
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-Evtim

Urgent: Mysterious behavior in class instantiation

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