Get classes from CLASSPATH?

Hi all!
I unziped ALL .jar files into a directory and set CLASSPATH to it. But everytime I run java/javac, they still get some classes from those jar files. And if I try to remove those .jar files, they cann't run!!!
So, would somebody tell me how to solve this problem?

Have no clue why one should do that ?�?Because unzipping .jar files when everytime running
java is slow. Doubt it. Not compared to the overall performance of the application.
And opening a file is also slow. So even if it is slower to access a single class from a jar file I bet the 130+ that the Sun JVM uses to start up takes more time.
And I don't want to load other useless
classes into my memory.That isn't how java works.
Java doesn't load all the classes in a jar file. It only loads classes as the are referenced.

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Problem loading modified classes from CLASSPATH using system class loader

Hi,
I am facing problem to load the modified classes from CLASSPATH.
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Do I need to have a custom class loader to fix this.
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Do I need to have a custom class loader to fix this.Yes.

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          Ken:
          I run into this problem yesterday too. I'm wondering if you have it resolved? Thank you very much!
          Lucy
          Ken Rimple <[email protected]> wrote:
          >All,
          >
          >I'm using 5.10 WLS, and have a jsp that is trying to access a class in a
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          >Ken Rimple
          >
          >

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Hi.
I need to get list of classes in CLASSPATH which implements the some interface.
How i can get list of classnames from CLASSPATH ?
TIA

What you want to do is not that trivial.Its not trivial, but its not really all that hard either.
I this thing quite a bit in JUnit tests (e.g, all SomeInterface implementations are expected to be serializable - lets hunt them out and check we can actually serialize them. Turned out to do that I needed a generic yet fairly intellegent object creator / populator: That was significantly less trivial than the other task).

Is there an API to get a fila from classpath

hi,
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Class.getResourceAsStream() will load a file from the CLASSPATH and return the InputStream.

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Hello,
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When running from an executable jar the normal class path is ignore in favour of thejar and any Class-Path specified in the jar's manifest.
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Nick
Refer to this portal doc on dev2dev
ftp://edownload:[email protected]/pub/downloads/webflow.doc
-tulan
"Nick Minutello" <[email protected]> wrote
in message news:[email protected]..
>
>
Can someone please point me to some documentation that describes where myPipeline
Component classes get loaded from?
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Setareh,
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Signals that an unexpected exception has occurred in a static initializer
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Regards

Hi,
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I need to do a scan for classes on a given area of the filesystem, but I'm not sure how to do this. I also need to be able to find the current jre/lib/ext location on the current system (thats going to be the first area I scan).
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2: Get the location of jre/lib/ext
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Hi Guys,
I am having some problems accessing my custom classes from my JSP.
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2) I've checked my classpath and yes, the file "SimpleCountingBean/SimpleCountingBean.class" is located off of one of the directories listed in the classpath.
3) When I attempt to use this class in my JSP, via the following import statement:
import "SimpleCountingBean.*"
I get the following compile error
java.lang.NoClassDefFoundError: SimpleCountingBean/SimpleCountingBean
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Do I need to upload some other files in addition to the class file? Any suggestions would of course be appreciated.
Sonny.

Trying to get some clearer view.. so don't mind..
So you uploaded all your .jsp files into your account which is:
home/sonny
and it compiles and work. But custom classes doesn't seems to be working, where did you place your classes?
From my knowledge of tomcat, classes are normally placed in, in this case:
home/sonny/web-inf/classes
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I'm trying to get the ClassLoader within a static method getInstance().
public class PropertyManager {
public static PropertyManager getInstance(String fileName) {
//The following line returns null
ClassLoader cl = (new Object()).getClass().getClassLoader();
URL url = cl.getResource(fileName);
etc...
However if getInstance gets called from e.g. a statless session bean, a null
is returned instead of a valid ClassLoader.
The same code executed from a standalone java program (e.g. from
main(String[] args)) returns a valid ClassLoader
Why does getClassLoader behave differently in WebLogic than in a standalone
java program?
Thanks for you help.
Bernie

Sorry for the confusion. I wrote a couple of more test programs and was able
to confirm that WL behaves exacltly the same as java does. For some reason
my intial tests were messed up...
getClassLoader() executed from a static method always returns null (in WL as
well as in a java standalone program).
In this case ClassLoader.getSystemClassLoader() will return a valid class
loader.
Thanks for your help.
Bernie
"Rob Woollen" <[email protected]> wrote in message
news:[email protected]..
Bernhard Lenz wrote:
I tried that as well, but getClassLoader() still returns null when
executed
in WL.
I'm still not clear how getClassLoader() gets affected by running withinWL.
>>
>
Very odd. Where is this class located? in the server's classpath, in ajar or
war file? Does getClass().getClassLoader work from a non-static method inthis
class?
-- Rob
"Rob Woollen" <[email protected]> wrote in message
news:[email protected]..
You want PropertyManager.class.getClassLoader()
-- Rob
Bernhard Lenz wrote:
I'm trying to get the ClassLoader within a static method
getInstance().
>>>>
public class PropertyManager {
public static PropertyManager getInstance(String fileName) {
//The following line returns null
ClassLoader cl = (new Object()).getClass().getClassLoader();
URL url = cl.getResource(fileName);
etc...
However if getInstance gets called from e.g. a statless sessionbean, a
null
is returned instead of a valid ClassLoader.
The same code executed from a standalone java program (e.g. from
main(String[] args)) returns a valid ClassLoader
Why does getClassLoader behave differently in WebLogic than in astandalone
java program?
Thanks for you help.
Bernie

Get classes from CLASSPATH?

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