The Observable design pattern is used in many important Java APIs. One well-known example is a JButton that uses the ActionListener API to execute an action. In this example, we have an ActionListener ...

This article describes an easy process of implementing the observer pattern in the Spring framework (Spring Core). Also discussed in this article are a few of the Spring Core classes as well as an ...

RESTful clients can update the score by invocating the same URL through a PUT invocation while also passing query parameters. Again, the program will return a JSON-based representation of the score ...