title: Eclipse -> Error: Could not find or load main class hello
body: <p>My code is easily compiling over CMD (I'm using Windows) but doesn't compile in eclipse.</p>
  
  <p>Please check the screenshot attached. </p>
  
  <p><img src="https://i.stack.imgur.com/KGr4H.png" alt="enter image description here"></p>
  
  <p>I read somewhere that I need to do some run configurations or add some JARS or external JARS but that all went over my head.</p>
  
  <p>Note: I'm new to java so please be a bit elaborated :) THANK YOU! :D </p>
  
  <p>Here is a screenshot of Problem tab in Eclipse:
  <img src="https://i.stack.imgur.com/xEq4w.png" alt="enter image description here"></p>