title: What does the @ sign means in java?
body: <p>Below is the code snippet. </p>
  
  <pre><code>@Intercepts({@Signature(
  type= Executor.class,
  method = "update",
  args = {MappedStatement.class,Object.class})})
  public class
  </code></pre>
  
  <p>Can someone explain to me what @ sign means in Java?</p>