|
Apache Commons Configuration |
|
|
Written by Samuel
|
|
fredag, 21 september 2007 |
|
Page 1 of 3 As a Java programmer you know that you often need to make a progam configurable. One common way to configure a Java application is to use the java.util.Properties. The usage of Properties is rather simple but has its disadvantages. Dynamic update in the program when changing the configuration file is a commonly needed function that Properties is lacking. The Apache Commons Configuration (http://commons.apache.org/configuration/) project includes more functions and features than Java Properties, including automatic reloading.
In this article we will look at a small Java program that uses the Commons Configuration. Changes in the configuration file will automatically be reloaded to the program. Commons Configuration depends on: - Commons Lang
- Commons Logging
- Commons Collections
Download the components above from Apache.org and setup your development environment so the JAR files are found in the CLASSPATH. Example #1Let’s start with a very simple application. public final class Configurator {
private FileConfiguration config;
public Configurator() {
config = new XMLConfiguration("app.xml");
System.out.println("title: "+config.getString(“title”));
}
public static void main(String[] args) {
Configurator c = null;
c = new Configurator();
}
} The configuration file app.xml: <?xml version="1.0" encoding="ISO-8859-1"?>
<myApplication>
<title>My application</title>
</myApplication>
If you can get this application up and running plus reading the configuration file your environmnet is working fine.
|
|
Last Updated ( lördag, 23 februari 2008 )
|
