Scala based automatic resource freeing

Using following scala resource, one freely release resources like(InputStrea, OutputStream, Sockets, JDBC Connection, JDBC ResultSet, JDBC Statements, SSLSocket, ServerSocket)

Source
Example Usage

ResourceTest.scala

object ResourceTest {
    import java.sql.{Connection,ResultSet}
    val OraPool = ConnPool("orahost152:1521",3, Db ) // some how get oracle jdbc connection

    def main ( args : Array[String] ): Unit =  {
        Resource.use (OraPool.getConnection){ conn =>
            val ts = find(conn)
            for ( v <- ts ) println(v)
        }
    }
    case class Tab(tname: String, tabtype: String)

    def find(conn: Connection): List[Tab] = {
        Resource.use(conn.createStatement){st =>
            Resource.use (st.executeQuery("select tname,tabtype from tab")){ rs =>
                import scala.collection.mutable.ListBuffer
                var list = List[Tab]() 
                while(rs.next()){
                    list ::= Tab(rs.getString("tname"), rs.getString("tabtype"))
                }
                list 
            }
        }
    }
}