title: Build path is incomplete. Cannot find class file
body: <p>I used framework Spring  and am now using it for a little sample project. However I keep having an error in my spring.xml configuration file :</p>
  
  <pre><code>Multiple annotations found at this line:
      - &lt;bean class="com.dao.StudentDaoImpl" id="stdDaoBean" /&gt;
      - Build path is incomplete. Cannot find class file for 
       com.dao.StudentDaoImpl
  </code></pre>
  
  <p>my code spring is: </p>
  
  <pre><code>   &lt;bean class="com.dao.StudentDaoImpl" id="stdDaoBean" /&gt;
      &lt;bean class="com.service.StudentServiceImpl" id="stdServiceBean"&gt;
          &lt;property name="studentDao" ref="stdDaoBean"&gt;&lt;/property&gt;
      &lt;/bean&gt;
  </code></pre>
  
  <p>StudentDao the class exists and I have the spring jar, as well; I do not know where the probelm is, though.</p>