how to use route in laravel 8 code example

Example 1: laravel get route

Route::get('foo', function () {
    return 'Hello World';
});

Example 2: laravel get route

Route::get('/user', 'UserController@index');

Example 3: laravel 8 route

Route::get(
    '/user/profile',
    [UserProfileController::class, 'show']
)->name('profile');