public class Main {

  public static void main(String[] args) {

​

    // Code here CANNOT use x

​

    { // This is a block

​

      // Code here CANNOT use x

​

      int x = 100;

​

      // Code here CAN use x

      System.out.println(x);

​

   } // The block ends here

​

  // Code here CANNOT use x

  }

}