title: I have ant error how to proceed?
body: <p>I'm a beginner in Liferay portal , when I try to compile my file : build.xml , those errors appear :</p>
  
  <pre><code>BUILD FAILED
  D:\PFA\liferay-plugins-sdk-6.1.0-ce-ga1-20120106155615760\build-common-plugin.xml:407: The following error occurred while executing this line:
  D:\PFA\liferay-plugins-sdk-6.1.0-ce-ga1-20120106155615760\build-common.xml:94: java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 51.0
  </code></pre>
  
  <p>The current version of :</p>
  
  <ul>
  <li><p>JDK : 1.6 </p></li>
  <li><p>ANT : 1.8.3</p></li>
  </ul>