title: Please explain me the meaning of String.class, Boolean.class, etc?
body: <p>I am new to java environment and today while studying jtable I came across Boolean.class, Integer.class, etc which I didn't understood!</p>
  
  <p>I tried to google them but didn't found any explanatory material!
  Please, explain me the meaning of these terms and their use!
  Thank You!</p>