import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

public class DBUtil {
    private static String driver;
    private static String url;
    private static String username;
    private static String password;
    static{
        Properties prop = new Properties();
        Reader in;
        try {
            in = new FileReader("src/config.properties");
            prop.load(in);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        driver = prop.getProperty("driver");
        url = prop.getProperty("url");
        username = prop.getProperty("username");
        password = prop.getProperty("password");
        
    }
    public static Connection open(){
        try {
            Class.forName(driver);
            return DriverManager.getConnection(url, username, password);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null; 
    }
    public static void close(Connection conn){
        if(conn!=null){
            try {
                conn.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}