How to get the "host" object java : <p>I need to get the "host" object of another object. Here an example</p>

<p>Suppose I have the </p>

<pre><code>class Peer {
    final Service service;
    public Peer(Service service) {
        this.service = service;
    }
    public void ping() {
        service.ping();
    }
}
</code></pre>

<p>and </p>

<pre><code>class Service {
    public String hola() {
        this.getPeer()? //HERE I NEED SOME COMMAND TO GET the Peer object, is this possible?
    }
}
</code></pre>

<p>Then in Service class, I need to get the peer object. Is this possible?</p>
