Definitely and explicitly JDK 9 is not supported for building Apache NetBeans.
All the instructions are here: https://github.com/apache/incubator-netbeans/blob/master/README.md You're recommended to join the dev@ mailing list, for the kinds of things you're doing, i.e., working with the NetBeans sources, since that's where you'll find most people having done the same kinds of things relating to working with the NetBeans sources. https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists Thanks, Gj On Fri, Mar 9, 2018 at 5:44 PM, Shaun Flynn <scf...@googlemail.com> wrote: > Hello there folks, > > I am trying to bulid Netbeans 9.0 from "https://github.com/apache/inc > ubator-netbeans" using Git and Ant. > > I have tried using Java 8 and Java 9 but it does not build. > > When I get to the Ant stage, javac complains of the following. Can anyone > help? > > C:\Users\user>CD incubator-netbeans > > C:\Users\user\incubator-netbeans>ant -version > Apache Ant(TM) version 1.10.2 compiled on February 3 2018 > > C:\Users\user\incubator-netbeans>ant > Buildfile: C:\Users\user\incubator-netbeans\build.xml > > -jdk-pre-preinit: > > -jdk-preinit: > > -jdk-warn: > > -jdk-presetdef-basic: > > -jdk-default: > > -jdk-init: > > -load-build-properties: > > bootstrap: > [echo] Bootstrapping NetBeans-specific Ant extensions... > [javac] Compiling 53 source files to C:\Users\user\incubator-netbea > ns\nbbuild\build\antclasses > [javac] > C:\Users\user\incubator-netbeans\nbbuild\antsrc\org\netbeans\nbbuild\LayerIndex.java:344: > error: class ZipArray inherits unrelated defaults for stream() from types > ResourceCollection and Collection > [javac] private static final class ZipArray extends > ArrayList<Resource> > [javac] ^ > [javac] 1 error > > BUILD FAILED > C:\Users\user\incubator-netbeans\nbbuild\build.xml:88: Compile failed; > see the compiler error output for details. > > Total time: 11 seconds >
