package de.vksi.c4j.acceptancetest.lesson02; import de.vksi.c4j.ContractReference; @ContractReference(AContract.class) public class A implements ASpec { private int wert; public int query(int x, int y) { int result = 0; result = x + y; return result; } public void command(int wert) { this.wert = wert; } }