<i>I keep seeing this as Oracle&#x27;s defence, but it is neither here nor there.</i><p>It doesn&#x27;t make sense to you because you misunderstood the case, and the legal argument. Oracle doesn&#x27;t need to make a defense, it&#x27;s already been ruled that Google is infringing.<p>Now <i>Google</i> has a chance to offer a fair-use defense, and a reasonable fair-use defense is to say, &quot;Google infringed for purposes of interoperability.&quot; If they could demonstrate that, then they would win the case.<p>So when people say <i>Android won&#x27;t even run standard Java programs,</i> they are giving evidence that Google&#x27;s interoperability defense will not work in court.