Hudsonに悪魔がやってきた

   	    <dependency>
  	      <groupId>com.sun.akuma</groupId>
  	      <artifactId>akuma</artifactId>
  	      <version>1.1</version><!-- executabe-war hardcodes this version, so when you change this, update executable-war as well -->
  	    </dependency>

https://akuma.dev.java.net/

This is a Java library you can use in your application to support Unix daemonization. By taking advantages of POSIX API, this library lets you fork your process into background with proper daemonization steps.