Exemple #1
0
  public static void main(String[] args) {
    // 产生一个女生群体
    List<Girl> listGirls = new ArrayList<Girl>();
    // 初始化女生
    for (int i = 0; i < 20; i++) {
      listGirls.add(new Girl());
    }

    Teacher teacher = new Teacher();

    // 老师发布命令
    teacher.commond(new GroupLeader(listGirls));
  }