title: CachedRowSetImpl cannot be resolved to a type
body: <p>I'm using CachedRowSet to hold the ResultSet form DB.
  According some demo code:
  I write below code:</p>
  
  <pre><code>CachedRowSetImpl crs = new CachedRowSetImpl();
  </code></pre>
  
  <p>But eclipse prompt me that CachedRowSetImpl cannot be resolved to a type.
  So I know I need to import some package.
  But I don't know which one to import?
  Anyone knows?</p>