# logstash fail to start in java 9 because tools.jar

**URL:** <https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638>\
**Category:** Logstash\
**Created:** [March 26, 2018, 4:14pm UTC](https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638 "2018-03-26T16:14:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![shyang.oblab](https://avatars.discourse-cdn.com/v4/letter/s/3d9bf3/32.png) [@shyang.oblab](https://discuss.elastic.co/u/shyang.oblab)\
**Post date:** [March 26, 2018, 4:14pm UTC](https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638/1 "2018-03-26T16:14:21Z")

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environment:

- windows 10 home, 64bit
- jdk 9.04 installed
- logstash-6.2.3.zip -\> unzip

logstash try to find "lib\tools.jar but it removed in java 9 and 10.

S:\elastic\logstash-6.2.3\>java -version  
java version "9.0.4"  
Java(TM) SE Runtime Environment (build 9.0.4+11)  
Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)

S:\elastic\logstash-6.2.3\>.\bin\logstash -e "input { stdin { } } output { stdout {} }"  
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.  
Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.  
오류: 기본 클래스 Files\Java\jdk-9.0.4\lib\tools.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\animal-sniffer-annotations-1.14.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\commons-compiler-3.0.8.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\error\_prone\_annotations-2.0.18.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\google-java-format-1.5.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\guava-22.0.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\j2objc-annotations-1.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jackson-annotations-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jackson-core-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jackson-databind-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jackson-dataformat-cbor-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\janino-3.0.8.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\javac-shaded-9-dev-r4023-3.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jruby-complete-9.1.13.0.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\jsr305-1.3.9.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\log4j-api-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\log4j-core-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\log4j-slf4j-impl-2.9.1.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\logstash-core.jar;S:\elastic\logstash-6.2.3\logstash-core\lib\jars\slf4j-api-1.7.25.jar을(를) 찾거나 로드할 수 없습니다.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [March 26, 2018, 4:28pm UTC](https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638/2 "2018-03-26T16:28:07Z")

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As shown in the [Support Matrix](https://www.elastic.co/support/matrix#matrix_jvm), Logstash does not yet support Java9.

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<div class="post-metadata">

**Author:** ![shyang.oblab](https://avatars.discourse-cdn.com/v4/letter/s/3d9bf3/32.png) [@shyang.oblab](https://discuss.elastic.co/u/shyang.oblab)\
**Post date:** [March 27, 2018, 4:16am UTC](https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638/3 "2018-03-27T04:16:26Z")

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I'll look forward to the next version release.  
Thanks @Christian_Dahlqvist.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 24, 2018, 4:16am UTC](https://discuss.elastic.co/t/logstash-fail-to-start-in-java-9-because-tools-jar/125638/4 "2018-04-24T04:16:34Z")

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