Getting a list of all classloaders in a JVM

Question

Is it possible to get a list of all class loaders in a JVM or at least all class loaders associated with web apps in a Java EE Server (WebLogic in my case).

coladict · Accepted Answer · 2016-10-11 10:50:49Z

8

There are good overviews on the class loader hierarchy at:

Archived version of http://e-docs.bea.com/wls/docs81/programming/classloading.html

http://weblogic.sys-con.com/node/42876

You can use

ClassLoader.getParent()

to walk through you current application's applications resolution tree, but you really can't look through the children app's class loaders.

edited Oct 11, 2016 at 10:50

coladict

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answered Jun 22, 2009 at 12:23

stevedbrown

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uglibubla · Accepted Answer · 2023-05-19 12:08:37Z

1

You could combine this answer with the following to get near to every classloader.

Thread.getAllStackTraces().keySet() //Get all active threads
.stream()
.map(thread -> thread.getContextClassLoader()) //Get the classloader of the thread (may be null)
.filter(Objects::nonNull) //Filter out every null object from the stream
.toList()

answered May 19, 2023 at 12:08

uglibubla

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