title: How do you read JavaDoc?
body: <p>What tools/websites do you use to read JavaDocs? </p>
  
  <p>I currently use Firefox with 20+ tabs open when working on a J2EE project to have all the documentation available which is not very usable, is eating too much memory and is not searchable.</p>
  
  <p>What I would expect from such a tool/website:</p>
  
  <ul>
  <li>Aggregate JavaDocs from different locations</li>
  <li>Direct access to types like Ctrl+T in Eclipse or similar</li>
  <li>Fulltext search</li>
  <li>Cross referencing between all the Java libraries I've chosen</li>
  <li>For a tool: offline support</li>
  <li>Speed</li>
  </ul>
  
  <p>not mandatory: </p>
  
  <ul>
  <li>possibility to annotate things</li>
  <li>support for different versions of a library (+ diffing ?)</li>
  <li>IDE integration</li>
  </ul>
  
  <p>Edit:</p>
  
  <p>Thanks for your answers. I knew most of the sites but gave them another try. Here is my judgement:</p>
  
  <ul>
  <li>built-in Eclipse/IDE features
  
  <ul>
  <li>tightly integrated</li>
  <li>offline/online support</li>
  </ul></li>
  <li><a href="http://www.javadoconline.com" rel="noreferrer"><strike>javadoconline.com</strike></a> (no longer maintained)
  
  <ul>
  <li>works</li>
  <li>clean looks</li>
  <li>finds matches in more than one version of the api and allows easy switching</li>
  <li>simple but working</li>
  <li>fast</li>
  </ul></li>
  <li><a href="http://www.jdocs.com/" rel="noreferrer"><strike>jdocs</strike></a> (offline)
  
  <ul>
  <li>seems very sophisticated</li>
  <li>sometimes slow</li>
  <li>some recent versions of libraries seem to be missing (Seam 2.0.0, Hibernate Validators) but it looks like you can add them yourself</li>
  <li>IDE integration (not tested)</li>
  <li>wiki style comments to each item</li>
  </ul></li>
  <li><a href="http://www.docjar.com/" rel="noreferrer">docjar.com</a>
  
  <ul>
  <li>works</li>
  <li>fast</li>
  <li>cluttered UI</li>
  </ul></li>
  <li><a href="http://www.teria.com/~koseki/tools/gm/javadoc_isearch/" rel="noreferrer">javadoc_isearch</a>
  
  <ul>
  <li>greasemonkey script for firefox which makes navigating javadocs easier</li>
  <li>works smooth and perfectly</li>
  </ul></li>
  </ul>