# 5 Beta install java.lang.reflect.InaccessibleObjectException error

**URL:** <https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986>\
**Category:** Logstash\
**Created:** [October 1, 2016, 12:09pm UTC](https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986 "2016-10-01T12:09:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![DigiAngel](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@DigiAngel](https://discuss.elastic.co/u/DigiAngel)\
**Post date:** [October 1, 2016, 12:09pm UTC](https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986/1 "2016-10-01T12:09:48Z")

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Bah:

```
Java HotSpot(TM) 64-Bit Server VM warning: Option UseParNewGC was deprecated in version 9.0 and will likely be removed in a future release.
LoadError: load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Cannot make a non-public member of class java.lang.reflect.AccessibleObject accessible
  require at org/jruby/RubyKernel.java:1040
   (root) at file:/usr/share/logstash/vendor/jruby/lib/jruby.jar!/jruby/java/java_ext.rb:3
  require at org/jruby/RubyKernel.java:1040
   (root) at file:/usr/share/logstash/vendor/jruby/lib/jruby.jar!/jruby/java.rb:1
Unable to install system startup script for Logstash.

```

Anyone seen this one before?

---

<div class="post-metadata">

**Author:** ![DigiAngel](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@DigiAngel](https://discuss.elastic.co/u/DigiAngel)\
**Post date:** [October 1, 2016, 12:18pm UTC](https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986/2 "2016-10-01T12:18:36Z")

</div>

Java version:

```
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+134)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+134, mixed mode)
```

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<div class="post-metadata">

**Author:** ![DigiAngel](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@DigiAngel](https://discuss.elastic.co/u/DigiAngel)\
**Post date:** [October 1, 2016, 3:21pm UTC](https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986/3 "2016-10-01T15:21:34Z")

</div>

Looks like java 9 isn't supported yet: [https://github.com/elastic/logstash/issues/5985](https://github.com/elastic/logstash/issues/5985), though the docs say "or later" [https://www.elastic.co/guide/en/logstash/5.0/installing-logstash.html](https://www.elastic.co/guide/en/logstash/5.0/installing-logstash.html)

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:36am UTC](https://discuss.elastic.co/t/5-beta-install-java-lang-reflect-inaccessibleobjectexception-error/61986/4 "2017-07-06T04:36:14Z")

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