001 package org.nanocontainer.testmodel; 002 003 004 005 /** 006 * @author Mauro Talevi 007 */ 008 public class B extends X { 009 public A a; 010 011 public B(A a) { 012 if (a == null) { 013 throw new NullPointerException("a"); 014 } 015 this.a = a; 016 } 017 018 public A getA() { 019 return a; 020 } 021 }