title: How would I solve the errors which I am getting when trying to use android project from existing code?
body: <p>I created a android app few months ago. Now, when I am trying to edit it by using Android project from existing code, it's showing some errors, that I don't know how to solve, or what it is. I had created this application on android 2.2 API level 8.</p>
  
  <p>I am having 4 errors which are stated below :</p>
  
  <ol>
  <li><p>The project cannot be built until build path errors are resolved.</p></li>
  <li><p>Project 'HisaabKiKitaab' is missing required library: 'C:\sdk\platforms\android-8\android.jar' </p></li>
  <li><p>Project 'HisaabKiKitaab' is missing required library: 'C:\sdk\platforms\android-4.2\android.jar'</p></li>
  <li><p>Project 'HisaabKiKitaab' is missing required library: 'C:\sdk\extras\google\admob_ads_sdk\GoogleAdMobAdsSdk-6.3.1.jar'</p></li>
  </ol>
  
  <p>Please help me to how to solve it. </p>
  
  <p><img src="https://i.stack.imgur.com/6mraN.png" alt="Missing libraries"></p>