title: In simple layman's terms what does getBean do in Spring?
body: <p>Consider a line of code like this </p>
  
  <pre><code>AutomobileDriver ad=(AutomobileDriver)appContext.getBean("increaseSpeed");
  </code></pre>
  
  <p>Assume there is an <code>IncreaseSpeed</code> class which inherits from <code>AutomobileDriver</code> class</p>
  
  <p>What does <code>getBean</code> do? What is the main function of this? </p>