get Connection object using Driver interface

It is a three step process.

Step 1: Load the driver

Ex: Class.forName("com.mysql.jdbc.Driver");

Step 2: Get the Driver instance

Ex: Driver driver = DriverManager.getDriver("jdbc:mysql://localhost/world");

Step 3: Use the connect method of Driver interface, to connect to database.

Ex: Connection conn = driver.connect("jdbc:mysql://localhost/world", props);

import java.sql.*;
import java.util.*;

public class SampleApp {
    public static void main(String args[]) throws SQLException, ClassNotFoundException{
        Class.forName("com.mysql.jdbc.Driver");
        Driver driver = DriverManager.getDriver("jdbc:mysql://localhost/world");
        Properties props = new Properties();
        
        String userName = "root";
        String password = "tiger";
        
        props.put("user", userName);
        props.put("password", password);
        
        Connection conn = driver.connect("jdbc:mysql://localhost/world", props);
        
        String query = "CREATE TABLE employee (id int, name varchar(30), PRIMARY KEY(id))";
        Statement stmt = conn.createStatement();
        stmt.execute(query);     
        
        /* Insert data to employee table */
        query = "INSERT INTO employee values(1, \"Krishna\")";
        stmt.execute(query);
        query = "INSERT INTO employee values(2, \"Arjun\")";
        stmt.execute(query);
        query = "INSERT INTO employee values(3, \"Joel\")";
        stmt.execute(query);
        
        System.out.println("Calling roll back operation");
        
        query = "SELECT * FROM employee";
        ResultSet rs = stmt.executeQuery(query);
        
        while(rs.next()){
            int id  = rs.getInt("id");
            String name = rs.getString("name");
            System.out.println(id +" " + name);
        }
        System.out.println("Dropping table employee");
        query = "DROP TABLE employee";
        stmt.execute(query);
        
    rs.close();
        stmt.close();
        conn.close();

    }
}

Output

Calling roll back operation
1 Krishna
2 Arjun
3 Joel
Dropping table employee

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