title: Unsupported major.minor version 51.0 error after moving from IntelliJ IDEA JBoss to MyEclipse Tomcat
body: <p>I am getting a Unsupported major.minor version 51.0 error after moving from IntelliJ IDEA JBoss to MyEclipse Tomcat.</p>
  
  <p>Everything was working great under IntelliJ IDEA and JBoss and now we are moving to MyEclipse and Tomcat 6..  </p>
  
  <p>I am getting:</p>
  
  <pre><code>Unsupported major.minor version 51.0
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141
  </code></pre>
  
  <p>can someone please tell me how to fix this issue</p>