Now, we need to create a binding using the BindingBuilder class to connect queue to Exchange. The following code is used to create a binding:

@Bean
Binding exchangeBinding(DirectExchange directExchange, Queue queue) {
    return BindingBuilder.bind(queue).
        to(directExchange)
        .with(ROUTING_KEY);
}

The exchangeBinding() method creates a binding of queue and Exchange with the ROUTING_KEY routing key value.