package com.iluwatar;

/**
 *
 * Visitor pattern defines mechanism to apply operations (UnitVisitor) on nodes
 * (Unit) in hierarchy. New operations can be added without altering the node
 * interface.
 *
 */
public class App {

    public static void main(String[] args) {

        Commander commander = new Commander(
                new Sergeant(new Soldier(), new Soldier(), new Soldier()),
                new Sergeant(new Soldier(), new Soldier(), new Soldier()));
        commander.accept(new SoldierVisitor());
        commander.accept(new SergeantVisitor());
        commander.accept(new CommanderVisitor());

    }
}