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POMaven / Hibernate -- why NoClassDefFoundError on ConstraintViolationException?
 

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    <p>I'm building this Hibernate application using Maven. It runs the way I expect in Eclipse (using a Maven plugin.) But when I "mvn clean install" the jar file from the command line, and then try to run the program in the jar with java -jar target/JarFileName.jar, the application eventually dies with:</p> <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: org/hibernate/exception/ConstraintViolationException </code></pre> <p>I see the class in the hibernate jar in the .m2 directory.</p> <p>Here's the latest hibernate-related dependencies I've got in my POM file. (I've been through a few iterations on this while trying to get it to work.)</p> <pre><code>&lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-core&lt;/artifactId&gt; &lt;version&gt;3.3.2.GA&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-annotations&lt;/artifactId&gt; &lt;version&gt;3.4.0.GA&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-commons-annotations&lt;/artifactId&gt; &lt;version&gt;3.3.0.ga&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-entitymanager&lt;/artifactId&gt; &lt;version&gt;3.4.0.GA&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.hibernate&lt;/groupId&gt; &lt;artifactId&gt;hibernate-tools&lt;/artifactId&gt; &lt;version&gt;3.2.3.GA&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; </code></pre> <p>What am I leaving out?</p>
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    1. COIf you open your built JAR file (can open it using 7-zip/winip/winRar/etc) - can you see the Hibernate JARs listed in your POM in the directory?
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    2. COWell, duh, no, they're not. I was so happy that they were listed in the manifest once I got the manifest plugin going, I guess I didn't think to look for the jars in the jar.
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    3. COI'm currently following through on this question about [bundling dependencies in your jar](http://stackoverflow.com/questions/574594/how-can-i-create-an-executable-jar-with-dependencies-using-maven), but your comment pointed me in the right direction. But I'm unable to "accept" a comment, I think. So make it an answer and I'll accept it.
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