How to establish a connection with the database using the properties file in JDBC?

Rishi Raj

Answered on 15th May, 2019

One of the variant of the getConnection() method of the DriverManager class accepts url of the database, (String format) a properties file and establishes connection with the database.

Connection con = DriverManager.getConnection(url, properties);

To establish a connection with a database using this method −

Set the Driver class name as a system property −

System.setProperty("Jdbc.drivers", "com.mysql.jdbc.Driver");

Create a properties object as −

Properties properties = new Properties();

Add the user name and password to the above created Properties object as −

properties.put("user", "root");
properties.put("password", "password");

Finally invoke the getConnection() method of the DriverManager class by passing the URL and, properties object as parameters.

//Getting the connection
String url = "jdbc:mysql://localhost/mydatabase";
Connection con = DriverManager.getConnection(url, properties);

Following JDBC program establishes connection with the MYSQL database using a properties file.

Example

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
public class EstablishingConnectionUsingProperties {
   public static void main(String args[]) throws SQLException {
      //Registering the Driver
      System.setProperty("Jdbc.drivers", "com.mysql.jdbc.Driver");
      Properties properties = new Properties();
      properties.put("user", "root");
      properties.put("password", "password");
      //Getting the connection
      String url = "jdbc:mysql://localhost/mydatabase";
      Connection con = DriverManager.getConnection(url, properties);
      System.out.println("Connection established: "+ con);
   }
}

Output

Connection established: com.mysql.jdbc.JDBC4Connection@2db0f6b2