JavaSpaces™ Principles, Patterns, and Practice

1.4. JavaSpaces Technology Overview

Now we are going to dive into our first example by building the obligatory “Hello World” application. Our aim here is to introduce you to the JavaSpaces programming interface, but we will save the nitty-gritty details for the next chapter. We are going to step through the construction of the application piece by piece, and then, once it is all together, make it a little more interesting.

1.4.1. Entries and Operations

A space stores entries. An entry is a collection of typed objects that implements the Entry interface. Here is an example “message” entry, which contains one field—the content of the message:

public class Message implements Entry {
  public String content;

  public Message() {
  }
}

We can instantiate ...