# Java no class def found error while installing elasticsearch? **URL:** \ **Category:** Elasticsearch\ **Created:** [December 31, 2011, 2:15am UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260 "2011-12-31T02:15:18Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Jason\_Jiang](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jason_jiang/32/3032_2.png) [@Jason\_Jiang](https://discuss.elastic.co/u/Jason_Jiang)\ **Post date:** [December 31, 2011, 2:15am UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260/1 "2011-12-31T02:15:18Z")
I followed these steps on [https://github.com/karmi/tire](https://github.com/karmi/tire) to install elasticsearch curl -k -L -o elasticsearch-0.17.6.tar.gz [http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz](http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz) tar -zxvf elasticsearch-0.17.6.tar.gz ./elasticsearch-0.17.6/bin/elasticsearch -f I am running this on MinGW on windows 7, and most of the process went smoothly. However, as I try to start the server with ./elasticsearch-0.17.6/bin/ elasticsearch -f I get a java no class def found error: $ ./elasticsearch-0.17.6/bin/elasticsearch Exception in thread "main" java.lang.NoClassDefFoundError: org/ elasticsearch/bootstrap/ElasticSearch Caused by: java.lang.ClassNotFoundException: org.elasticsearch.bootstrap.ElasticSearch at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) Could not find the main class: org.elasticsearch.bootstrap.ElasticSearch. Program will exit. What gives? ---
**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\ **Post date:** [December 31, 2011, 5:39am UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260/2 "2011-12-31T05:39:59Z")
I am not familiar with the Ruby/Tire client, but if it is working via HTTP, there should be no reason why you would not be able to work with the latest ES version (0.18.6). Try installing the latest version and see if you get the same error. [https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.18.6.tar.gz](https://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.18.6.tar.gz) Also, I am not sure if the -f flag works on Windows, but it still would not be the cause of NoClassDefFoundError. -- Ivan On Fri, Dec 30, 2011 at 6:15 PM, Jason Jiang [petrifiednightmares@gmail.com](mailto:petrifiednightmares@gmail.com) wrote: > I followed these steps on [GitHub - karmi/retire: A rich Ruby API and DSL for the Elasticsearch search engine](https://github.com/karmi/tire) to install > elasticsearch > > curl -k -L -o elasticsearch-0.17.6.tar.gz > [http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz](http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz) > > tar -zxvf elasticsearch-0.17.6.tar.gz > > ./elasticsearch-0.17.6/bin/elasticsearch -f > > I am running this on MinGW on windows 7, and most of the process went > smoothly. > > However, as I try to start the server with ./elasticsearch-0.17.6/bin/ > elasticsearch -f I get a java no class def found error: > > $ ./elasticsearch-0.17.6/bin/elasticsearch > Exception in thread "main" java.lang.NoClassDefFoundError: org/ > elasticsearch/bootstrap/Elasticsearch > Caused by: java.lang.ClassNotFoundException: > org.elasticsearch.bootstrap.Elasticsearch > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > Could not find the main class: > org.elasticsearch.bootstrap.Elasticsearch. Program will exit. > > What gives? ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [December 31, 2011, 10:47am UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260/3 "2011-12-31T10:47:14Z")
It might be a problem wiht MinGW and installing elasticsearch in a path with spaces. Frist, try and see if you still get it with the latest elasticsearch (0.18.6). If it still happens, they some path variables should probably be quoted (which one does MinGW calls, the elasticsearch.bat one or the elasticsearch one?). On Sat, Dec 31, 2011 at 4:15 AM, Jason Jiang [petrifiednightmares@gmail.com](mailto:petrifiednightmares@gmail.com)wrote: > I followed these steps on [GitHub - karmi/retire: A rich Ruby API and DSL for the Elasticsearch search engine](https://github.com/karmi/tire) to install > elasticsearch > > curl -k -L -o elasticsearch-0.17.6.tar.gz > > [http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz](http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch-0.17.6.tar.gz) > > tar -zxvf elasticsearch-0.17.6.tar.gz > > ./elasticsearch-0.17.6/bin/elasticsearch -f > > I am running this on MinGW on windows 7, and most of the process went > smoothly. > > However, as I try to start the server with ./elasticsearch-0.17.6/bin/ > elasticsearch -f I get a java no class def found error: > > $ ./elasticsearch-0.17.6/bin/elasticsearch > Exception in thread "main" java.lang.NoClassDefFoundError: org/ > elasticsearch/bootstrap/Elasticsearch > Caused by: java.lang.ClassNotFoundException: > org.elasticsearch.bootstrap.Elasticsearch > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > Could not find the main class: > org.elasticsearch.bootstrap.Elasticsearch. Program will exit. > > What gives? ---
**Author:** ![Jason\_Jiang](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jason_jiang/32/3032_2.png) [@Jason\_Jiang](https://discuss.elastic.co/u/Jason_Jiang)\ **Post date:** [December 31, 2011, 10:56pm UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260/4 "2011-12-31T22:56:40Z")
Yeah It did turn out to be a MinGW problem. I had to use windows style paths instead of unix style paths for classpath and it is working now. Thanks guys On Dec 31, 2:47 am, Shay Banon [kim...@gmail.com](mailto:kim...@gmail.com) wrote: > It might be a problem wiht MinGW and installing elasticsearch in a path > with spaces. Frist, try and see if you still get it with the latest > elasticsearch (0.18.6). If it still happens, they some path variables > should probably be quoted (which one does MinGW calls, the > elasticsearch.bat one or the elasticsearch one?). > > On Sat, Dec 31, 2011 at 4:15 AM, Jason Jiang > [petrifiednightma...@gmail.com](mailto:petrifiednightma...@gmail.com)wrote: > > > I followed these steps onhttps://github.com/karmi/tireto install > > elasticsearch > > > curl -k -L -o elasticsearch-0.17.6.tar.gz > > > [http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch](http://github.com/downloads/elasticsearch/elasticsearch/elasticsearch)... > > > tar -zxvf elasticsearch-0.17.6.tar.gz > > > ./elasticsearch-0.17.6/bin/elasticsearch -f > > > I am running this on MinGW on windows 7, and most of the process went > > smoothly. > > > However, as I try to start the server with ./elasticsearch-0.17.6/bin/ > > elasticsearch -f I get a java no class def found error: > > > $ ./elasticsearch-0.17.6/bin/elasticsearch > > Exception in thread "main" java.lang.NoClassDefFoundError: org/ > > elasticsearch/bootstrap/Elasticsearch > > Caused by: java.lang.ClassNotFoundException: > > org.elasticsearch.bootstrap.Elasticsearch > > at java.net.URLClassLoader$1.run(Unknown Source) > > at java.security.AccessController.doPrivileged(Native Method) > > at java.net.URLClassLoader.findClass(Unknown Source) > > at java.lang.ClassLoader.loadClass(Unknown Source) > > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > > at java.lang.ClassLoader.loadClass(Unknown Source) > > Could not find the main class: > > org.elasticsearch.bootstrap.Elasticsearch. Program will exit. > > > What gives? ---
**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, 3:44am UTC](https://discuss.elastic.co/t/java-no-class-def-found-error-while-installing-elasticsearch/6260/5 "2017-07-06T03:44:04Z")