Re: testing for a class having been loaded

[Alan Snyder]

JDK-8170834

> On Nov 30, 2016, at 11:13 AM, Alan Snyder <javali...@cbfiddle.com> wrote:
> 
> By the way, I had no trouble finding examples on the web of using 
> findLoadedClass() via reflection. I listed the first 11 below.
> 
> Obviously, this hack is known, of interest, and used.
> 
> I think it deserves to be an issue.
> 
>> As I said, this change will not be popular but please bear with it until the 
>> extent of the issues uncovered is more widely understood. We need all the 
>> help we can get to identify issues and get them reported (and hopefully 
>> fixed) by the libraries and tools with the technical debt (and we expect a 
>> lot of it will be technical debt). For those working on OpenJDK and the JDK 
>> 9 project then it's very possible that some of these issues will redirect to 
>> the JDK as requests for new APIs or hooks (and I assume will need to be 
>> looked at on a case-by-case basis).
>> 
>> Any help reporting issues to popular tools and libraries would be 
>> appreciated.
> 
> 
> 
> https://github.com/HotswapProjects/HotswapAgent/blob/master/hotswap-agent-core/src/main/java/org/hotswap/agent/util/classloader/ClassLoaderHelper.java
> 
> http://stackoverflow.com/questions/482633/in-java-is-it-possible-to-know-whether-a-class-has-already-been-loaded
> 
> http://stackoverflow.com/questions/12093271/how-do-i-determine-class-loading-order-when-i-inject-them-into-the-systemclasslo
> 
> https://dzone.com/articles/classloaderlocal-how-avoid
> 
> http://snacktrace.com/artifacts/net.bytebuddy/byte-buddy-dep/1.3.20/net.bytebuddy.dynamic.loading.ClassInjector
> 
> https://fossies.org/linux/yacy/source/net/yacy/document/parser/pdfParser.java
> 
> http://lists.jboss.org/pipermail/jboss-cvs-commits/2010-May/120099.html
> 
> https://devops.ands.org.au/browse/VT-BUILD-55/artifact/JOB1/Javadoc/src-html/au/org/ands/vocabs/toolkit/utils/ApplicationContextListener.html
> 
> http://visualvm.sourcearchive.com/documentation/1.2.1-0ubuntu1/ClassLoaderManager_8java-source.html
> 
> http://code.taobao.org/svn/QLExpress/trunk/src/main/java/com/ql/util/express/ExpressClassLoader.java
> 
> http://svn.rifers.org/rife/tags/release-1.4/src/framework/com/uwyn/rife/engine/EngineClassLoader.java
> 
>