If you don't want too much infrastructure complexity in Java - go for Tomcat or Jetty - If you want advanced enterprise functionality go for JBOSS or another J2

If you don't want too much infrastructure complexity in Java - go for Tomcat or Jetty - If you want advanced enterprise functionality go for JBOSS or another J2EE server. If you want asynchronous io, go for netty. Javaland is full of options that offer best performance.