title: Check component under mouse
body: <p>I used SWING in desktop Java project.</p>
  
  <p>Is possible to check what type of component is under mouse ? </p>
  
  <p>For example: 
  I have got many different components and I want put mouse on and get what component is under(ex. JButton, ComboBox etc). It is possible ?</p>
  
  <p>I do not want add mouse listener to all components. Maybe there is way to add mouse listener on whole panel... ?</p>