title: Unable to resolve superclass error when referencing .jar library
body: <ol>
  <li>I did an Android project and run it. It ran successfully. </li>
  <li>I developed a web service in Java and hosted it. It ran successfully.</li>
  <li>I exported the webservice into a .jar and added it to my Android project.</li>
  <li>When I try to call a method in the web service I get an <code>Unable to resolve superclass</code> error.</li>
  </ol>
  
  <p>My error log:</p>
  
  <pre><code>Unable to resolve superclass of Lweb/service/RandomWordGeneratorService; (73)
  Link of class 'Lweb/service/RandomWordGeneratorService;' failed 
  Could not find class 'web.service.RandomWordGeneratorService',
      referenced from method tam.miru.Login$1.onClick
  VFY: unable to resolve new-instance 110 Lweb/service/RandomWordGeneratorService;)
      in Ltam/miru/Login$1; 
  VFY: replacing opcode 0x22 at 0x005a    
  VFY: dead code 0x005c-006e in Ltam/miru/Login$1;.onClick (Landroid/view/View;)
  </code></pre>