If you download NetBeans Ruby IDE only, i.e. without Java support you might install it later through Plugin Manager (Menu | Tools | Plugins). Just select Java plugin in the Available Plugins tab as shown in the screenshot. You might wish to install e.g. Java Debugger, Java Profiler, etc. as well.
$ ls -1 netbeans bin/ CREDITS.html DISTRIBUTION.txt etc/ gsf1/ ide10/ java2/ LEGALNOTICE.txt LICENSE.txt moduleCluster.properties nb6.5/ netbeans.css platform9/ README.html ruby2/ THIRDPARTYLICENSE-generated.txt THIRDPARTYLICENSE.txt webcommon1/ websvccommon1/
| java-support-install.png | ![]() |
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