Use of label in a method in java pgm..........

Use of label in a method

{

   public static void main(String[] args)

   {

      String strSearch = "This is the string in which you 

      have to search for a substring.";

      String substring = "substring";

      boolean found = false;

      int max = strSearch.length() - substring.length();

      testlbl:

      for (int i = 0; i < = max; i++) 

      {

         int length = substring.length();

         int j = i;

         int k = 0;

         while (length-- != 0) 

         {

            if(strSearch.charAt(j++) != substring.charAt(k++)

           {

               continue testlbl;

            }

         }

         found = true;

         break testlbl;

      }

      if (found) 

      {

         System.out.println("Found the substring .");

      }

      else 

      {

         System.out.println("did not find the 

         substing in the string.");

      }

   }

}