How to change eclipse plugin's default parent-first classloader policy to child-first classloader po

Posted by deepthinker121 on Stack Overflow See other posts from Stack Overflow or by deepthinker121
Published on 2010-03-03T07:10:27Z Indexed on 2010/05/06 9:38 UTC
Read the original article Hit count: 343

Filed under:

eclipse-plugin

|

classloader

Hi All,

I want to change the behavior of eclipse's parent-first classloader policy to child-first classloader policy. The scenario would be :

Plugin A has class C in dependent external jar.

When the classloader of the jar looks for "META-INF" folder - it should find the META-INF folder of the jar and not the one found by its parent classloader - that is the plugin A's META-INF folder.

So I want to change the classloader policy to 'child-first' rather than 'parent-first'

Is it possible to do this by changing the plugin A's Manifest or plugin.xml?

© Stack Overflow or respective owner

Related posts about eclipse-plugin

Import Eclipse Plugin

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey everybody, I developed an Eclipse plugin (a view) using the plugin development version of Eclipse. I exported the plugin as a jar archive and now I would like import it in another version of Eclipse, but it doesn't recognize the plugin. This is my first plugin so I might have forgotten something… >>> More
What is the single best free Eclipse plugin for a Java developer

as seen on Stack Overflow - Search for 'Stack Overflow'
Some Eclipse plugins are mandated by your environment. The appropriate source code management plugin, for example - and I'm not interested in those. Some provide useful enhancements, but in a specific niche. I'm not interested in those. Some are great, but cost money. I'm not interested in those… >>> More
Use packages from plain old Java project in eclipse plugin project

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following setup: eclipse a standard Java project (A) an eclipse plugin project (B) How (if possible) can I use packages from A within B without first compiling a JAR file from A and adding it to B? Thanks! >>> More
Code Completion -- Aptana Eclipse Plugin

as seen on Stack Overflow - Search for 'Stack Overflow'
I have been doing javascript development for the last couple weeks and have tried JSDT and Aptana to assist in code completion. JSDT wasn't very good at all, but I did have more luck with Aptana (used as eclipse plug-in, not the standalone product). The problem I'm encountering is that when I create… >>> More
"Unable to associated Elastic IP with cluster" in Eclipse Plugin Tutorial

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I am currently trying to evaluate AWS for my company and was trying to follow the tutorials on the web. http://developer.amazonwebservices.com/connect/entry.jspa?externalID=2241 However I get the below error during startup of the server instance: Unable to associated Elastic IP with cluster:… >>> More

Related posts about classloader

How to change eclipse plugin's default parent-first classloader policy to child-first classloader po

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I want to change the behavior of eclipse's parent-first classloader policy to child-first classloader policy. The scenario would be : Plugin A has class C in dependent external jar. When the classloader of the jar looks for "META-INF" folder - it should find the META-INF folder of the jar… >>> More
How to use Blazeds with a custom classloader?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, has anybody tried using a custom classloader with BlazeDS? We have a web application using BlazeDS and we can convert Java objects in to ActionScript object and back without problems in the main application. However, we also have a plug-in mechanism based on a custom classloader. BlazeDS cannot… >>> More
load class not in classpath dynamically in web application - without using custom classloader

as seen on Stack Overflow - Search for 'Stack Overflow'
I am developing a web application. The web application generates java classes on the fly. For example it generates class com.people.Customer.java In my code, I dynamically compile this to get com.people.Customer.class and store in some directory say repository/com/people/Customer.class which is… >>> More
java.lang.NoClassDefFoundError

as seen on Stack Overflow - Search for 'Stack Overflow'
Everything was working just fine but now I can no longer run my application. For some reason javax.* is not being found yet in Eclipse the imports are fine... exception javax.servlet.ServletException: Error allocating a servlet instance org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve… >>> More
class weblogic.management.WeblogicMBean not found

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all I meet this problem when I try to run Junit test case in fork mode (starting each test in a separate JVM) using Build ant file. [junit] Exception in thread "main" java.lang.NoClassDefFoundError: weblogic/management/WebLogicMBean [junit] at java.lang.ClassLoader.defineClass1(Native Method) [junit]… >>> More