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Commons Config

This module contains utilities and helpers for configurations.


This properties based configuration reloads automatically if thefile has changed. So you need not to restart an application due to configuration change. The implementation is bsed on this blog article.


final class MyAppConfig extends ReloadingPropertiesConfiguration {

    public MyAppConfig(final Path file) {

    public String getServiceUrl() {
        return getRequiredProperty("service.url");

    public boolean getShouldStartSlow() {
        return getFlag("start-slow", false);

    public int getHttpPort(final int defaultPort) {
        return getInteger("myapp.http.port", defaultPort);