Dynamically load local_policy.jar?

Hi
I'd like to use a 256bit-AES-Algorithm with my application.
Is there any possibility to load the necessary
Unlimited Strength Jurisdiction Policy Files dynamically?
I don't really believe, that I have to suggest the user
to alter the basic-jre/jdk-configuration, just in order
to use my small app.
(copy local_policy.jar/US_export_policy.jar to
$JAVA_HOME/lib/security)
Isn't there anything you can do to import the
local_policy.jar/US_export_policy.jar at runtime
or via runtime-parameter for the vm?
thanks in advance.
Oli4

eg- this.getClass().getClassLoader().loadClass("class")Try using Thread.currentThread().getContextClassLoader() instead of this.getClass().getClassLoader().

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URLClassLoader + dynamically loading signed jar files

I have an applet that does not know all of the jar files it will need to load at startup.
I would like to dynamically load these signed jar files using the URLClassLoader, however it does not recognize these jar files as being signed and I get java.security.AccessControlException: access denied errors.
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Thanks!

Try this classloader for loading the jars, it should to the trick:
import java.net.URL;
import java.net.URLClassLoader;
import java.net.URLStreamHandlerFactory;
import java.security.AllPermission;
import java.security.CodeSource;
import java.security.PermissionCollection;
import java.security.Permissions;
public class AllPermissionsClassLoader extends URLClassLoader {
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Dynamic loading of jar files

Hi,
I've two servlets, servlet1 and servlet2, running on WebLogic 5.1 with two jar
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How to dynamically load jar files - limiting scope to that thread

Dynamically loading jar files has been discussed a lot. I have read a quite a few posts, articles, and demo code for doing just that. However, I have yet to find a solution to my problem. Most people modify their system class loader and are happy. I have done that and was happy for a time. Occasionally, you will see reference to an application server or tomcat or some other large project that have successfully been able to load and unload jar files, allow for dynamic deployment of code, etc. However, I have not been able to achieve similar success; And my problem is much less complicated.
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Thanks to everyone - I got it working!
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Security problem when signed applet dynamically load plugins

Hi!
I have one problem : "security problem when signed applet dynamically load plugins"
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the main program [app.jar]
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the plugin [amazon.jar]
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Sovann

hello. i have create a signed applet for A.jar. A.jar include two package B and C. the main applet class is within B.
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Dynamically load jar file

Hi,
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>
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I searched the internet, but google can't help me out.
Regards,
Thijs

It shouldn't be that difficult; all the stuff you need to build jars is in java.util.jar.*.
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Hello,
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I appreciate your help and thanks for your time.

Try this link if you want to see how browser based help will look on MACs and Apple hardware.
http://www.grainge.org/demos/bbair/
Your developers would need to create a sniffer to ascertain the OS of the user's device and then route to the required help. That is not built into RoboHelp and RoboHelp Server will not assist with this one.
See www.grainge.org for RoboHelp and Authoring tips
@petergrainge

Dynamically loading jar files

Hi
In my application I need to dynamically create objects of types specified by string which is passed as parameter. I am able to do this if the class is inside the same jar. But I need to load the class from any jar name specified. How do i go about doing this? Is there a way to dynamically loading jar files?

It's easy. You use [url http://java.sun.com/j2se/1.5.0/docs/api/java/net/URLClassLoader.html]URLClassLoader:String jarPath = ...;
String className = ...;
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...Regards

Dynamic class loading from JARs in web application

Hello,
I'm working on a web project in which we would like to dynamically load plugins without server restart.
We have developed our own ClassLoader in order to load the plugins from a path or with a user interface upload function.
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Best regards,
Kristoffer Renholm

Hi,
Sounds like a classpath problem that the folks in the workshop newsgroup
could help with. Try asking your question in:
http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=xover&group=weblogic.developer.interest.workshop&utag=
Bruce
Graeme Dougal wrote:
>
Hi, I am developing a web service with weblogic workshop. The JWS file references
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Hi,
I have written a custom class loader that allows me to load a compiled java program as a collection of class files at runtime.
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Is this possible? If so I would like to know how as I have been struggling with this problem and cannot see a solution.
Regards,
Stephen

However I still don't understand why you need to
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URLClassLoader (which sounds a lot like what youare
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database, i jared together all the classes, and i did
something in the manfest file so that you can just
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doing it this way everything is fine except it cannot
access the database, the reason is those oracle
classes are not loaded, even they are on the path - i
can run the app using a batch file but i dont like it
as it opens up a dos window. this is an example, as i
was told, where it is necessary to load all thoses
oracle database classes initially. Dear, daFei.
I believe that you are getting confused between the way the system will ignore that CLASPPATH environment variable when you run a java application packaged as a jar file with the -jar switch (the classpath for the jar can be set in the manifest) and what I am attempting to-do which is to run a compiled java program at runtime and dynamically load any dependant libraries.
Stephen

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IAS 6.5 dynamic loading problem

Hi all,
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## Visibroker configuration settings
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VBROKER_ADM=$VISIBROKER_PRODUCT_DIR/adm
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if [ "$script" = "kjs" ]
then
JVMARGS=
if [ "$sun" ]
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## Internal JVM bug workaround for Solaris JDK1.2.2_05a
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fi
fi
if [ "$script" = "beanreg" -o "$script" = "jspc" ]
then
JAVA_ARGS=
[ "$sun" ] && export JAVA_ARGS="-Xms32m -Xmx64m"
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export NLSPATH=$IAS_ROOT/kdb/encina/%L/%N
export LANG=${LANG:-C}
PATH=$IAS_ROOT/bin:${IAS_ROOT}/APPS/bin:$JAVA_EXECS_DIR:$PATH
IASPATHS=
[ -n "$ORACLE_HOME" ] && IASPATHS=$IASPATHS:$ORACLE_HOME/bin
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[ -n "$INFORMIXDIR" ] && IASPATHS=$IASPATHS:$INFORMIXDIR/bin
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# Union of all CLASSPATHS
If I didn't set my own classpath , since I've 2 applications inside the one server , the dynamic loading was working fine in both servlet and JSP. Due to there were some class files with same name inside the 2 applications, so I need specifiy the exact class path to avaid the mis-using. However, after I specify the classpath, the servlet dynamic loading was working failure. Any solution ?
Thanks.

check the dynamic reloading docs at
http://docs.sun.com/source/816-5786-11/jpgApxReload.html#14358
Please also check the limiations of Dynamic Reloading

How to load a Jar file in the class path?

How to load a Jar file which contains class files, images, etc.. in the classpath without using URLClassLoader.

You don't "load" jars. If it's on the classpath, you can obtain individual resources from it using various methods on either Class or ClassLoader. Do you mean "how to add a jar to the classpath at runtime"? Can't be done without using a classloader, typically URLClassLoader or a subclass thereof. Why you want to not use the proven method is beyond me. Presumably because you don't understand classloading. In which case, forget it.

Unable to load "ejb.jar" to database

Hi All,
I am trying to load ejb.jar to database by using the following syntax.
loadjava -verbose -force -resolve -oracleresolver -user <uname>/<password>@<server>:<port>:<sid> -t ejb.jar
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ksh: loadjava : not found.
In the server when i type loadjava it is showing the options, means loadjava will work i think. Is there any configuration needs to change to load ejb.jar to database ?
Machine details :
AIX 64 Bit 5.3
DB : Oracle 11g 11.2.0.2.0
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Thanks,
Prakash

Prakash wrote:
Hi,
I did the following
export PATH=$ORACLE_HOME/bin
Then
loadjava -verbose -force -resolve -oracleresolver -user <Uname>/<Pwd>@<Server>:<Port>:<Sid> -t ejb.jar
But still i m facing the same issue.
Even the .profile also we have defined : export PATH=$PATH:$ORACLE_HOME/bin/
Can you please point me what is missing in the above steps i followed.
Thanks,
Prakash
PLEASE use COPY & PASTE so we can see exactly what you do & response from OS/Oracle
what is "-t" arguement?
bcm@bcm-laptop:~$ loadjava
loadjava: Usage: loadjava [-definer] [-encoding encoding] [-force] [-genmissing] [-genmissingjar jar] [-grant grants] [-help] [-nousage] [-noverify] [-oci8] [-order] [-resolve] [-nativecompile] [-resolver resolver] [-schema schema] [-synonym] [-thin] [-tableschema schema] [-user user/password@database] [-verbose] [-edition edition] classes..jars..resources..properties...
bcm@bcm-laptop:~$

Anyway to have JDeveloper dynamically load BC4J components in memory?

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While the application size growing, some unusual problem comes out. The biggest problem is that it makes JDeveloper very sluggish. It takes 15 minutes to just open JDeveloper and may need a few minutes to open the application module editor. (FYI: in our team, most developers have 1G memory and 1.8G CPU or up.) This is probably still OK for right now, but it will become a big problem later when the project size grows.
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The package is the unit of loading in the IDE for ADF business components.
To edit components, they must belong to the project.
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Is there a way we can get your existing project in house to study its design time performance?

Dynamically load local_policy.jar?

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