http://www.dropwizard.io/2.0.18/dropwizard-bom/dropwizard-dependencies/dropwizard-parent/dropwizard-configuration: Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web applications.
  • Coda Hale
  • Nick Telford
  • Graham O'Regan
  • Ryan Kennedy
  • Camille Fournier
  • Carlo Barbara
  • Matt Veitas
  • Ryan Tenney
  • Jochen Schalanda
  • Glenn McAllister
  • Nick Babcock
  • Justin Plock
  • Artem Prigoda 
package io.dropwizard.configuration;

import org.apache.commons.text.lookup.StringLookup;


A custom StringLookup implementation using environment variables as lookup source. 
/**
 * A custom {@link StringLookup} implementation using environment variables as lookup source.
 */
public class EnvironmentVariableLookup implements StringLookup {
    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    public String lookup(String key) {
        return System.getenv(key);
    }
}