title: What is the difference between JNA and JNR
body: <p>According to the image from <a href="http://www.oracle.com/technetwork/java/jvmls2013nutter-2013526.pdf" rel="noreferrer">here</a><br>
  <a href="https://i.stack.imgur.com/6Qrsc.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6Qrsc.png" alt="enter image description here"></a></p>
  
  <p>both libraries work according to the same principle. But I believe that there is a difference between them. What is this difference?</p>