Simple Example Program

Public class Message implements Entry {

public String content;

public Integer counter;

public Message() { }

public Message(String content, int initVal) {

this.content = content;

counter = new Integer(initVal); }

public String toString() {

return content + “ read “ + counter + “ times.”; }

public void increment() {

counter = new Integer(counter.intValue() + 1); }

}

This is a Hello World, which counts how many times the client program has printed “Hello, World”.

It uses 3 classes, one for the Entry in JavaSpace, one for the main HelloWorld monitor class, and one for the client HelloWorld class.