Re: error: Can't find constructor

Thanks Alexey,

I need to have a look at the docu to better understand the class loader
stuff ...

The reason why I am doing this is:
- I want users to be able to script additional functionality
- if it works as script it could be switched to 'strict Java' mode
- and if performance required it compiled into the application.

To test I just used the java code of an existing class -
which should work 

In the test code I set up the class path to the compiled classes like
HardwareREgistry & EventQueue.
Then I source the java class file into the interpreter -
I was assuming this would use the same or at least cascaded class loaders.


Alexey Zinger wrote:
> 
> I'm wondering if this isn't because they are loaded by different class
> loaders and so com.rabe.proofstepmanager.hardwareregistry.HardwareRegistry
> and com.rabe.proofstepmanager.eventqueue.EventQueue classes in the
> constructor signature are not the same for the JVM as their versions
> loaded as normal class files.  Is there a reason you need to source a
> legal Java class file rather than load its compiled version?
> 
> Alexey
> 2001 Honda CBR600F4i (CCS)
> 1992 Kawasaki EX500
> http://azinger.blogspot.com
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> 
> 
> 
> --- On Thu, 6/26/08, MJB1024  wrote:
> 
>> From: MJB1024 
>> Subject: [Beanshell-users]  error: Can't find constructor
>> To: beanshell-users-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>> Date: Thursday, June 26, 2008, 3:19 PM
>> Hi, maybe someone can help me ...
>> 
>> I am sourcing a java-source file defining a class which
>> compiles and run in
>> JAVA.
>> I want to use it interpreted, so it could be changed
>> easily.
>> 
>> When I check the constructors with getDeclaredConstructors
>> they are shown as
>> expected.
>> 
>> Then I construct the arguments as instances of JAVA
>> classes.
>> 
>> When I try to construct an instance of the interpreted
>> class I get a strange
>> 'Can't find constructor'
>> 
>> any Ideas what I need to do differently? - thanks  MJB
>> 
>> bsh session:
>> ----------------
>> bsh %
>> source("c:\\programme\\TestLoop\\cnf\\ScriptedPS\\PSSetRelaisGroup1.java");
>>  com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1>
>> 
>> bsh %
>> com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1.class.getDeclaredConstructors();
>> <[Ljava.lang.reflect.Constructor;@166c114>
>> 
>> bsh %
>> print(com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1.class.getDeclaredConstructors());
>> java.lang.reflect.Constructor []: {
>> public
>> com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1(com.rabe.proofstepmanager.hardwareregistry.HardwareRegistry,com.rabe.proofstepmanager.eventqueue.EventQueue,com.rabe.utils.log.LogFile),
>> public
>> com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1(com.rabe.proofstepmanager.hardwareregistry.HardwareRegistry,com.rabe.proofstepmanager.eventqueue.EventQueue),
>> }
>> 
>> bsh % hr = psm.hr;
>> 
>> bsh % ev = psm.evtQueue;
>> 
>> 
>> 
>> bsh % x = new PSSetRelaisGroup1(hr,ev);
>> // Error: EvalError: Constructor error: Can't find
>> constructor:
>> com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1(
>> com.rabe.proofstepmanager.hardwareregistry.HardwareRegistry,
>> com.rabe.proofstepmanager.eventqueue.EventQueue ) in class:
>> com.rabe.m2pConnector.proofsteps.PSSetRelaisGroup1 : at
>> Line: 1 : in file:
>>  : new PSSetRelaisGroup1 ( hr , ev ) 
>> 
>> 
>> 
>> 
>> 
>> 
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>> 
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> 
>       
> 
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