Conclusion
Although this example could have easily been written in pure Objective-C to accomplish the goal of retrieving data from a URL, it illustrates how simple it is to use Java libraries in an Objective-C/Cocoa application. The URLRetriever class could have just as easily accessed a J2EE application over RMI, a SOAP application using Apache's axis, a database, and so on. The bridge opens up the entire Java world to Cocoa applications.
Although some developers are lambasting Apple because it is not updating the bridge for the latest Cocoa APIs, the bridge still has tremendous value in taking advantage of all that Java has to offer.