From: Rory O'D. <ror...@or...> - 2015-06-05 10:39:53
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Hi Kent, Just checking in with you, have you had a chance to check for dependencies on JDK-Internal APIs ? Rgds,Rory On 29/05/2015 16:24, Rory O'Donnell wrote: > > Hi Kent, > > As part of the preparations for JDK 9, Oracle’s engineers have been > analyzing open source projects like yours to understand usage. One > area of concern involves identifying compatibility problems, such as > reliance on JDK-internal APIs. > > Our engineers have already prepared guidance on migrating some of the > more common usage patterns of JDK-internal APIs to supported public > interfaces. The list is on the OpenJDK wiki [0]. > > As part of the ongoing development of JDK 9, I would like to inquire > about your usage of JDK-internal APIs and to encourage migration > towards supported Java APIs if necessary. > > The first step is to identify if your application(s) is leveraging > internal APIs. > > /Step 1: Download JDeps. / > > Just download a preview release of JDK8(JDeps Download > <https://jdk8.java.net/download.html>). You do not need to > actually test or run your application on JDK8. JDeps(Docs > <http://docs.oracle.com/javase/8/docs/technotes/tools/unix/jdeps.html>) > looks through JAR files and identifies which JAR files use > internal APIs and then lists those APIs. > > /Step 2: To run JDeps against an application/. The command looks like: > > jdk8/bin/jdeps -P -jdkinternals *.jar > your-application.jdeps.txt > > The output inside your-application.jdeps.txt will look like: > > your.package (Filename.jar) > -> com.sun.corba.se JDK internal API (rt.jar) > > _3rd party library using Internal APIs:_ > If your analysis uncovers a third-party component that you rely on, > you can contact the provider and let them know of the upcoming > changes. You can then either work with the provider to get an updated > library that won't rely on Internal APIs, or you can find an > alternative provider for the capabilities that the offending library > provides. > > _Dynamic use of Internal APIs:_ > JDeps can not detect dynamic use of internal APIs, for example through > reflection, service loaders and similar mechanisms. > > Rgds,Rory > > [0] > https://wiki.openjdk.java.net/display/JDK8/Java+Dependency+Analysis+Tool > -- > Rgds,Rory O'Donnell > Quality Engineering Manager > Oracle EMEA , Dublin, Ireland -- Rgds,Rory O'Donnell Quality Engineering Manager Oracle EMEA , Dublin, Ireland |