title: Getting error while building android
body: <p>For some days I used to build android successfully.
  But from last 2-3 days i was unable to build it. its giving some errors like:</p>
  
  <blockquote>
    <p>packages/apps/Calculator/src/com/android/calculator2/CalculatorDisplay.java:19:
    cannot access android.content.Context bad class file:
    android/content/Context.class(android/content:Context.class) unable to
    access file: corrupted zip file Please remove or make sure it appears
    in the correct subdirectory of the classpath. import
    android.content.Context;
                          ^ make: <em>*</em>
    [out/target/common/obj/APPS/Calculator_intermediates/classes-full-debug.jar]
    Error 41</p>
  </blockquote>