java lang NoClassDefFoundError com fasterxml jackson core JsonFactory

Question

I am working on YouTube broadcast sample examples  I have created a sample Java Project  amp  added required jars  But  when I try to run the project it throws exception   Exception    Throwable  com fasterxml jackson core JsonFactory java lang NoClassDefFoundError  com fasterxml jackson core JsonFactory     at com google api client json jackson2 JacksonFactory  lt init gt  JacksonFactory java 44      at com google api services samples youtube cmdline live Auth  lt clinit gt  Auth java 35      at com google api services samples youtube cmdline live CreateBroadcast main CreateBroadcast java 55  Caused by  java lang ClassNotFoundException  com fasterxml jackson core JsonFactory     at java net URLClassLoader 1 run URLClassLoader java 366      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          3 more   I downloaded the project from this GitHub repository

User · Answer

In my case problem was when i added com fasterxml jackson dataformat i put the version 2 11 0  While all other Jackson dependencies were 2 8 0 and one of them was 2 11 0 and changing all to be 2 8 0 fixed it  FYI  2 11 is the latest but due to my legacy code  i kept it as 2 8 as well  Before Fix  ERROR  com fasterxml jackson dataformat version is 2 11 0               com fasterxml jackson dataformat         jackson-dataformat-xml         2 11 0       lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-databind lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-annotations lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt   After Fix  WORKED  com fasterxml jackson dataformat version is 2 8 0          com fasterxml jackson dataformat         jackson-dataformat-xml         2 8 0       lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-databind lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-annotations lt  artifactId gt       lt version gt 2 8 0 lt  version gt   lt  dependency gt

User · Answer

Add the following dependency to your pom xml   lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 5 2 lt  version gt   lt  dependency gt

User · Answer

As of jackson 2 7 4  or earlier maybe   the class is in jacskon-jaxrs-base jar  which is contained in jackson-jaxrs-json-provider

User · Answer

The requested jar is probably not jackson-annotations-x y z jar but jackson-core-x y z jar which could be found here  http   www java2s com Code Jar j Downloadjacksoncore220rc1jar htm

User · Answer

Solved the problem by upgrading the dependency to below version   lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-core lt  artifactId gt       lt version gt 2 9 8 lt  version gt   lt  dependency gt

User · Answer

Because of old version I got this error  Then I changed to this version n error gone  Using maven my pom xml    lt properties gt                 lt jackson version gt 2 5 2 lt  jackson version gt   lt  properties gt    lt dependencies gt               lt dependency gt               lt groupId gt com fasterxml jackson core lt  groupId gt               lt artifactId gt jackson-core lt  artifactId gt               lt version gt   jackson version  lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt com fasterxml jackson core lt  groupId gt               lt artifactId gt jackson-databind lt  artifactId gt               lt version gt   jackson version  lt  version gt           lt  dependency gt           lt dependency gt               lt groupId gt com fasterxml jackson core lt  groupId gt               lt artifactId gt jackson-annotations lt  artifactId gt               lt version gt   jackson version  lt  version gt           lt  dependency gt   lt  dependencies gt    my old version was  2 2 3

User · Answer

I have had the same error  I added dependency on pom xml  I am working with Maven   lt dependency gt            lt groupId gt com fasterxml jackson core lt  groupId gt            lt artifactId gt jackson-core lt  artifactId gt            lt version gt 2 12 1 lt  version gt     lt  dependency gt    I started trying with version 2 9 0  then I found a different error  com fasterxml jackson core exc InputCoercionException  then I try different versions until all errors were solved with version 2 12 1

User · Answer

You have to add one jar   jackson-annotations-2 1 2 jar You can download it from here and add it to the class path If you are using the  gradle then add the following dependency   compile  com fasterxml jackson jaxrs jackson-jaxrs-json-provider 2 5 2

User · Answer

If you are using springboot then jackson is added by default  So the version of jackson you are adding manualy is probably conflicting with the one spring boot adds  Try to delete the jackson dependencies from your pom  If you need to override the version spring boots add  then you need to exclude it first and then add your own

[java] java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonFactory

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