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Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Connect to MySQL database example

This is an example of how to connect to MySQL database. Connecting to the MySQL database implies that you should:

  • Create an account, by connecting to the MySQL database on your platform as root, and then by running the command to grant privileges to your account.
  • Load the MySQL JDBC driver, using the forName(String className) API method of the Class, in order to connect to MySQL database.
  • Create a Connection to the database. Invoke the getConnection(String url, String user, String password) API method of the DriverManager to create the connection. The parameters should be the database url, the database user on whose behalf the connection is being made and the user’s password.

Let’s take a look at the code snippets that follow:

To create an account, you can connect to the MySQL database on your platform as root, and run the following command:

mysql> GRANT ALL PRIVILEGES ON *.* TO username@localhost IDENTIFIED BY 'password' WITH GRANT OPTION;

The following snippet establishes a connection to a MySQL database using the account created above

package com.javacodegeeks.snippets.core;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnectToMySQL {
 
  public static void main(String[] args) {

    Connection connection = null;
    try {

  // Load the MySQL JDBC driver

  String driverName = "com.mysql.jdbc.Driver";

  Class.forName(driverName);


  // Create a connection to the database

  String serverName = "localhost";

  String schema = "test";

  String url = "jdbc:mysql://" + serverName +  "/" + schema;

  String username = "username";

  String password = "password";

  connection = DriverManager.getConnection(url, username, password);

  

  System.out.println("Successfully Connected to the database!");

  
    } catch (ClassNotFoundException e) {

  System.out.println("Could not find the database driver " + e.getMessage());
    } catch (SQLException e) {

  System.out.println("Could not connect to the database " + e.getMessage());
    }

  }
}

Output:

Successfully Connected to the database!

 
This was an example of how to connect to MySQL database in Java.

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