Precompiled third party API usage

Hi,
I have a question related to the compile and run time behavior of the java objects.
I have written a class which is using third party API classes. The third party API is compiled using the older version (say JDK1.2) version of java. Now I compile my developed class with JDK 1.6.
When we compile a java file which is using the third party API classes, does the byte code hence generated contains the references of the API classes used or somehow it include the byte code of these classes in the newly compiled classes' bytecode? If the byte code of the API classes gets inserted into the newly generated class, does the third party class will also be compiled with the JDK1.6.
Actually I am trying to migrate my application from weblogic 8.1 to weblogic 10.0. The higher version of weblogic require the java files compiled using JDK 1.5 or higher versions. Since the third party APIs are compiled using the previous versions of JDK so I am getting a bit skeptical whether this will work or not. If at all, this will work (with the old API classes) than how?
Thanks in advance,
Amit Singhal

I would say to (at least attempt) to get new versions of the librarires.
In any case, the only byte code that shows up in a classfile is created from the code in that class definition (excpet for some references to static final variables, but that can be overlooked for now). Nothing from those "libraries" will be inserted into your newly compiled classes.
Now, as far as those libraries functioning under a new JVM (with such a large version disparity) is questionable. Technically they should, but I would neither count on this, nor expect them to be effecient even if they do function.

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Kind regards
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Hi Eea,
There are many articles in the Internet talking about
packaging of j2ee compenents, for example:
http://www.onjava.com/pub/a/onjava/2001/06/26/ejb.html
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classpath in your startserver command file...
Regards,
Slava Imeshev
"Eea" <[email protected]> wrote in message
news:[email protected]..
Hi there
I have a small J2EE applicaion made up of EJBs, servlets and JSPs
packaged and deployed as an EAR file in WebLogic 6.1.
I'd like to make use of a third-party API (that is packaged as a JAR
file) from the servlet and EJB components within the application, but
am a little confused as to where to place the JAR file.
I've tried placing it in the WEB-INF/lib directory of the WAR file,
the servlets found the library successfully but the EJB components
threw ClassNotFoundExceptions.
I've tried placing it in the EAR file at the same level as the WAR and
EJB JAR file, ie:
App.EAR
/application.xml
/EJB.JAR
/WEB.WAR
/LIB.JAR
but then the servlets were unable to find it.
Finally, I tried placing one copy in the WEB-INF\lib and one copy as
described above in the EAR file, but still - the EJBs were unable to
find the library.
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basis, so placing a reference to the JAR file in the CLASSPATH when
starting WebLogic is not an option.
Any one encountered or solved this kind of problem before ?
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ksp wrote:
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Good Morning (or afternoon),
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%

Precompiled third party API usage

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