Case Study: A Bank Database public double getBalance() throws SQLException { Connection conn = SimpleDataSource.getConnection(); try { double balance = 0 PreparedStatement stat = conn.prepareStatement( SELECT Balance FROM Account WHERE Account_Number = ); stat.setInt(1, accountNumber); ResultSet result = stat.executeQuery(); if (result.next()) balance = result.getDouble(1); return balance; } finally { conn.close(); }