[JAVA] MySQL

package com.apocalypsjenl.mysql;

import java.sql.*;

//MySQL Class created by ApocalypsjeNL
public class MySQL {

    private Connection connection = null;

    public void connect(String host, Integer port, String username, String password, String database) throws SQLException, ClassNotFoundException {
        Class.forName("com.mysql.jdbc.Driver");
        connection = DriverManager.getConnection("jdbc:mysql://" + host + ":" + port + "/" + database, username, password);
    }

    public void execute(String sql) throws SQLException {
        if(connection != null) {
            Statement statement = connection.createStatement();
            statement.execute(sql);
        }
    }

    public ResultSet executeQuery(String sql) throws SQLException {
        if(connection != null) {
            Statement statement = connection.createStatement();
            return statement.executeQuery(sql);
        }
        return null;
    }

    public void disconnect() throws SQLException {
        if(connection != null) {
            connection.close();
            System.out.println("Disconnected from database!");
        }
    }
}