Add Table icon in the toolbar

Hello,

I need to add table icon in the toolbar to add tables in the editor, without using another plugin. is this possible,

function add_table_button_to_editor($buttons) {
$buttons[] = ‘table’;
return $buttons;
}

function enable_table_button($settings) {
$settings[‘toolbar1’] .= ‘,table’;
return $settings;
}

add_filter(‘mce_buttons’, ‘add_table_button_to_editor’);
add_filter(‘tiny_mce_before_init’, ‘enable_table_button’);

i tried this code, nothing happened, is there any customization possible? please help me ASAP