# JDK version error

**URL:** <https://discuss.elastic.co/t/jdk-version-error/96479>\
**Category:** Elasticsearch\
**Created:** [August 9, 2017, 4:48pm UTC](https://discuss.elastic.co/t/jdk-version-error/96479 "2017-08-09T16:48:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![maheshpavi](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@maheshpavi](https://discuss.elastic.co/u/maheshpavi)\
**Post date:** [August 9, 2017, 4:48pm UTC](https://discuss.elastic.co/t/jdk-version-error/96479/1 "2017-08-09T16:48:56Z")

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Hi All,

In my machine we have JDK 1.7 and JDK 1.8 versions and i have updated environmental variabels by pointing with the  
JDK 1.8 and JRE 1.8 a.Both java -version and javac -version shows JDK 1.8.  
when i have ran command it is resulting to below error.

java.lang.UnsupportedClassVersionError: cfcc/CFInternet : Unsupported major.minor version 52.0  
at java.lang.ClassLoader.defineClass1(Native Method)  
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)  
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  
at java.security.AccessController.doPrivileged(Native Method)  
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)  
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)  
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)  
Exception in thread "main"

Could you please suggest me on this.

Thanks and regards,  
Mahesh A.

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 10, 2017, 7:50am UTC](https://discuss.elastic.co/t/jdk-version-error/96479/2 "2017-08-10T07:50:28Z")

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Can you post the entire log please?

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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:** [September 7, 2017, 7:50am UTC](https://discuss.elastic.co/t/jdk-version-error/96479/3 "2017-09-07T07:50:48Z")

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Closed on September 7, 2017, 7:50am UTC

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