title: Eclipse IDE debugging with code change
body: <p>I am using Eclipse IDE for Java Developers</p>
  
  <p>Version: Helios Service Release 1
  Build id: 20100917-0705</p>
  
  <p>In remote debugging Web app with tomcat 7.0.37, when I make some changes, even a line, the changes can not be made into the runtime, so I need to recompile and re-deploy the war application. Wast a lot of time. The message: </p>
  
  <pre><code>Hot code replace failed - Delete method not implemented
  </code></pre>
  
  <p>I do not understand the message.</p>
  
  <p>Anyone know the secret on how to auto reflect the code change in debug mode? Thanks.</p>