title: java just curly braces
body: <p>I was reading a book and there were a few example with programs that has just curly braces</p>
  
  <p>for example </p>
  
  <pre><code> public static void main(String args[]){
       //what is the uses of curly braces here.
       {
            //some code
       }
   }
  </code></pre>