import java.sql.*;
import java.util.ResourceBundle;
//注意：dbinfo.properties要和該載入檔案放到一個目錄下，不用寫全稱，只需要寫dbinfo即可
public class DBUtils {

    private static String driverClass;
    private static String url;

    static {
        //此物件是用來載入properties檔案資料的
        ResourceBundle rb = ResourceBundle.getBundle("dbinfo");

        driverClass 
 
= rb.getString("driverClass");
        url = rb.getString("url");
        try {
            Class.forName(driverClass);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    public static Connection getConnection() throws Exception {
            return  DriverManager.getConnection(url);
    }
    
 
public static void closeAll(ResultSet resultSe, Statement statement, Connection connection){
        if (resultSe != null){
            try {
                resultSe.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        //resultSe = null;
 

        if (statement != null){
            try {
                statement.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        //statement = null;
        if (connection != null){
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
       // connection = null;
    }

}