# Could not find or load main class Files
**URL:** https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443
**Category:** Logstash
**Created:** [April 2, 2018, 3:26pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443 "2018-04-02T15:26:08Z")
**Posts on this page:** 19
**Page:** 1
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 3:26pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/1 "2018-04-02T15:26:08Z")
HI Team,
We are observing below issue when trying to run the logstash. Could you please help us on this.
ELK version 6.2.3
OS - Windows
JDK - 1.8
```
Error: Could not find or load main class Files\Java\jdk1.7.0_51\lib;D:\PageSizeT
ool\Classess\harlib-all-1.1.2\build;D:\PageSizeTool\Classess\jackson-src-1.7.9\j
ackson-src-1.7.9\src\java;D:\PageSizeTool\Classess\Selenium;D:\PageSizeTool\Clas
sess\src;;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\animal-sniffer-annotat
ions-1.14.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\commons-compiler-3
.0.8.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\error_prone_annotations
-2.0.18.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\google-java-format-1
.5.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\guava-22.0.jar;D:\SFactor
y\ELK\Logstash\logstash-core\lib\jars\j2objc-annotations-1.1.jar;D:\SFactory\ELK
\Logstash\logstash-core\lib\jars\jackson-annotations-2.9.1.jar;D:\SFactory\ELK\L
ogstash\logstash-core\lib\jars\jackson-core-2.9.1.jar;D:\SFactory\ELK\Logstash\l
ogstash-core\lib\jars\jackson-databind-2.9.1.jar;D:\SFactory\ELK\Logstash\logsta
sh-core\lib\jars\jackson-dataformat-cbor-2.9.1.jar;D:\SFactory\ELK\Logstash\logs
tash-core\lib\jars\janino-3.0.8.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\j
ars\javac-shaded-9-dev-r4023-3.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\ja
rs\jruby-complete-9.1.13.0.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\j
sr305-1.3.9.jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\log4j-api-2.9.1.
jar;D:\SFactory\ELK\Logstash\logstash-core\lib\jars\log4j-core-2.9.1.jar;D:\SFac
tory\ELK\Logstash\logstash-core\lib\jars\log4j-slf4j-impl-2.9.1.jar;D:\SFactory\
ELK\Logstash\logstash-core\lib\jars\logstash-core.jar;D:\SFactory\ELK\Logstash\l
ogstash-core\lib\jars\slf4j-api-1.7.25.jar
```
TIA.
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 3:34pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/2 "2018-04-02T15:34:21Z")
Please provide JAVA\_HOME value
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 3:44pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/3 "2018-04-02T15:44:34Z")
JAVA\_HOME C:\Program Files\Java\jdk1.8.0\_45
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 3:46pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/4 "2018-04-02T15:46:38Z")
This log shows
`Error: Could not find or load main class Files\Java\jdk1.7.0_51\lib;D:\PageSizeT`
your java pointed to different location. Try to fix it by adding
`JAVA_HOME=C:\Program Files\Java\jdk1.8.0_45`
in your logstash.sh or logstash.bat file (after initial comment section)
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 3:55pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/5 "2018-04-02T15:55:51Z")
I don't see any comment section when i try to check in the logstash.bat file.
could you please clarify.
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 3:57pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/6 "2018-04-02T15:57:59Z")
```
@echo off
setlocal enabledelayedexpansion
set params='%*
```
My bad I am regerring to sh file instead of bat.
Add after 2 line or at 1 line. any location is fine I believe
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:06pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/7 "2018-04-02T16:06:15Z")
i did add it in the bat file. i see the below error -
'JAVA\_HOME' is not recognized as an internal or external command,
any leads?
thanks
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:07pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/8 "2018-04-02T16:07:30Z")
> [@Suman\_Reddy1](#):
>
> JAVA\_HOME=C:\Program Files\Java\jdk1.8.0\_45
set JAVA\_HOME=C:\Program Files\Java\jdk1.8.0\_45
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:17pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/9 "2018-04-02T16:17:31Z")
we have upgraded our jdk to below and updated the same in the bat file but still get the same error -
set JAVA\_HOME=C:\Program Files\Java\jdk1.8.0\_161
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:21pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/10 "2018-04-02T16:21:57Z")
Is it still pointing to Java 7?
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:24pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/11 "2018-04-02T16:24:02Z")
we are not using Java 8
jdk1.8.0\_161
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:24pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/12 "2018-04-02T16:24:44Z")
I mean this error
Error: Could not find or load main class **Files\Java\jdk1.7.0\_51\lib** ;D:\PageSizeT
ool\Cla
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:25pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/13 "2018-04-02T16:25:30Z")
yes, still it says the same, jdk 1.7...
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:26pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/14 "2018-04-02T16:26:15Z")
> [@sahadevgd](#):
>
> yes, still it says the same, jdk 1.7...
Then something wrong with your Java environment variables.
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:34pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/15 "2018-04-02T16:34:57Z")
run java -version from command line.
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:37pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/16 "2018-04-02T16:37:45Z")
it got resolved now. it was due to CLASSPATH, not sure why but it was referring to that path
---
### Author:  [@Suman\_Reddy1](https://discuss.elastic.co/u/Suman_Reddy1)
#### Post date: [April 2, 2018, 4:39pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/17 "2018-04-02T16:39:31Z")
👍
---
### Author:  [@sahadevgd](https://discuss.elastic.co/u/sahadevgd)
#### Post date: [April 2, 2018, 4:42pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/18 "2018-04-02T16:42:42Z")
thanks for all your suggestions.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 30, 2018, 4:42pm UTC](https://discuss.elastic.co/t/could-not-find-or-load-main-class-files/126443/19 "2018-04-30T16:42:46Z")
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