title: Imported library not recognized in Eclipse
body: <p>I'm have a problem importing a library. I first tried importing it as an external library, which leads to this:
  <img src="https://i.stack.imgur.com/nxLlN.png" alt="enter image description here"></p>
  
  <p>...afterwards, I searched StackOverflow, created a folder named /libs, and copied the JAR there, but it still doesn't work:
  <img src="https://i.stack.imgur.com/cLm52.png" alt="enter image description here"></p>
  
  <p>Any pointers?</p>
  
  <p>Thanks you!</p>