title: Java class file not on classpath
body: <p>I've tried opening class file in eclipse that I have copied pasted from the jar that I have imported into the project and am receiving this as first error: </p>
  
  <p>org.eclipse.core.runtime.CoreException: The class file is not on the classpath. </p>
  
  <p>Evidently I have included the class file incorrectly into my project. I need to use this class file to access Java applet. Suggestions please</p>