I have to check connection leak in my application i.e. open connections which have not been closed.

After searching, after I found out that a thousands times connections have been opened but I can't manually go to each and every code fragment and check for connection close thing.

I think, it could be possible using a regular expression but the fact is, I am not that well versed with regex that I could write one.

Please suggest a regular expression for checking in a no of java files that a opened connection has been closed or not.

My code pattern is something like this.

    try {
        /*
         Some code goes here
         */ 

     con = EJBUtil.getConnection(JNDI_NAME);

        /*
         Some code goes here
         */ 
         } 
    finally 
       {
            /*
              Some code goes here
           */ 
            DBUtil.close(con);
     or
         closeConnection.close(con);
           /*
            Some code goes here
           */ 
      }