01: package org.nanocontainer.testmodel; 02: 03: /** 04: * @author Mauro Talevi 05: */ 06: public class B extends X { 07: public A a; 08: 09: public B(A a) { 10: if (a == null) { 11: throw new NullPointerException("a"); 12: } 13: this .a = a; 14: } 15: 16: public A getA() { 17: return a; 18: } 19: }