Create a connection to MySQL in Java

This time we are going to create a basic connection to MySQL in Java and pull some data from it.

// Compile it:
// javac Mysql.java
//
// Try it:
// java -classpath mysql-connector-java-5.1.27-bin.jar:. MySQL

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class MySQL {

    public Connection getConnection() throws SQLException {
        Connection conn = null;
        Properties p = new Properties();

        p.put("user", "username");
        p.put("password", "superpassword");

        String cs = "jdbc:mysql://localhost/demo";
        conn = DriverManager.getConnection(cs, p);

        return conn;
    }

    public static void main(String[] args) {
        Connection conn = null;
        ResultSet rs = null;
        Statement stmt = null;

        try {
            // Register JDBC driver
            Class.forName("com.mysql.jdbc.Driver");

            MySQL mysql = new MySQL();
            conn = mysql.getConnection();
            stmt = conn.createStatement();

            String sql = "select * from songs limit 10";
            rs = stmt.executeQuery(sql);

            while (rs.next()) {
                System.out.println(rs.getString("name"));
            }

        }
        catch (Exception e) {
            e.printStackTrace();
        }
        finally {
            try {
                if (rs != null) rs.close();
                if (stmt != null) stmt.close();
                if (conn != null) conn.close();
            }
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}

Happy coding…

 

Leave a Reply