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ray_m Jan 30, 2017 2:44 PM
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According to : https://netbeans.org/downloads/index.html . Netbeans IDE 8.2 doesn't work with JE9 SDK.
JDK 8 is required for installing and running the Java SE, Java EE and All NetBeans Bundles. NetBeans 8.2 does not run on JDK9! You can download standalone JDK or download the latest JDK with NetBeans IDE Java SE bundle.